Answer:
7*8*4/2
Step-by-step explanation:
112
Answer:
112 cm
Step-by-step explanation:
First find the area of the triangle. Formula: 1/2bh
Base of 8 times height of 4 = 32. Then you divide 32 by 2(or multiple by 1/2, it's essentially the same) to get 16.
Now that you've found the area of the triangle, you multiply that by the length of the shape. (7cm)
16*7 = 112
So the volume of the shape = 112cm^3
A bag contains only green balls and red balls. A bal is tim
of taking a green ball is 038. Write down the probability of
a red ball
Answer:
It would be 0.62.
Step-by-step explanation:
This is because the total probability is 1 and the chance of it being a green ball is 0.38, so:
1 - 0.38 = 0.62.
The average age of Elliot, Miya and Cara is 4 years more than the average
age of Elliot and Miya.
Cara is 9 years older than Elliot.
Four years ago, Elliot was double the age of Miya.
Work out the ages of Elliot, Miya and Cara.
Answer:
Elliot = 16 years old
Miya = 10 years old
Cara = 25 years old
Step-by-step explanation:
Define the variables:
x = Elliot's agey = Miya's agez = Cara's ageThe average age of Elliot, Miya and Cara is 4 years more than the average age of Elliot and Miya:
[tex]\implies \dfrac{x+y+z}{3}=\dfrac{x+y}{2}+4[/tex]
[tex]\implies \dfrac{x+y+z}{3}=\dfrac{x+y+8}{2}[/tex]
[tex]\implies 2(x+y+z)=3(x+y+8)[/tex]
[tex]\implies 2x+2y+2z=3x+3y+24[/tex]
[tex]\implies 2z=x+y+24[/tex]
[tex]\implies x=2z-y-24[/tex]
Cara is 9 years older than Elliot:
[tex]\implies z = x + 9[/tex]
Four years ago, Elliot was double the age of Miya:
[tex]\implies (x - 4) = 2(y - 4)[/tex]
[tex]\implies x - 4 = 2y-8[/tex]
[tex]\implies x +4 = 2y[/tex]
[tex]\implies y=\dfrac{1}{2}x +2[/tex]
Substitute the equations for z and y into the equation for x and solve for x:
[tex]\implies x=2z-y-24[/tex]
[tex]\implies x=2(x+9)-\left(\dfrac{1}{2}x +2\right)-24[/tex]
[tex]\implies x=\dfrac{3}{2}x-8[/tex]
[tex]\implies \dfrac{1}{2}x=8[/tex]
[tex]\implies x=16[/tex]
Substitute the found value of x into the equation for z and solve for z:
[tex]\implies z = 16 + 9[/tex]
[tex]\implies z = 25[/tex]
Substitute the found value of x into the equation for y and solve for y:
[tex]\implies y=\dfrac{1}{2}(16) +2[/tex]
[tex]\implies y=8+2[/tex]
[tex]\implies y=10[/tex]
Therefore, the ages of Elliot, Miya and Cara are:
Elliot = 16 years oldMiya = 10 years oldCara = 25 years oldBrain Builders
Use the graph for Exercises 24 and 25.
24. Before leaving the grocery store, Kenny wrote the
y-coordinate first and the x-coordinate second when telling
his sister where to meet him. To his surprise, she was at
the right location. If his sister did not make an error, where
did the siblings meet? Explain how you know.
The siblings met at the point (4,7). This can be determined by looking at the graph and seeing that the point (4,7) is the only point with an x-coordinate of 4 and a y-coordinate of 7.
What is coordinate?Coordinate refers to the pair of numbers used to identify the position of a particular point on a graph, map, or other two-dimensional plane. Each coordinate consists of an x-coordinate and a y-coordinate that indicate the horizontal and vertical position of the point, respectively. Coordinates can be used to plot points, draw shapes, and determine distances between points. For example, the coordinates (4, 7) would tell you that the point is located four units to the right and seven units up from the origin point. Coordinates can also be used to describe the location of a point in three-dimensional space, with the addition of a z-coordinate.
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Anything would help please
When the points are (2, 6), (2, -2), and (8 units), the polygon's or triangle's area is 8. ( 4 , -2)
what is triangle ?A triangle, which is a polygon, has three sides and three vertices. One of geometry's basic shapes is it. A triangle with the vertices A, B, and C is referred to as Triangle ABC. A unique plane and triangle are discovered in Euclidean geometry when the three points are not collinear. Having three sides and three corners, a triangle is a polygon. The triangle's corners are defined as where the three sides meet one another end to end. 180 degrees is the sum of the angles in a triangle.
given
area of the polygon ( triangle ) = 1/2 * b * h
= 1/2 * 4 * 4
= 8 units
so When the points are (2, 6), (2, -2), and (8 units), the polygon's or triangle's area is 8. ( 4 , -2)
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what is 900,000*9,000
Answer:
8,100,000,000
Step-by-step explanation:
I used a calculator lol
The measures of the angles of a triangle are shown in the figure below. Solve for x.
(5x-17)®
(7x-3)
56°
The measurement of three angles in the triangle are 43°, 81°, 56°.
What are the angles of a triangle?A triangle's interior angles always add up to 180°, whereas its exterior angles are equal to the sum of the two interior angles that are not adjacent to it.
Given three angles,
∠A = (5x - 17)°
∠B = (7x - 3)°
∠C = 56°
We know that in a triangle ∠A + ∠B + ∠C = 180°
By substituting values,
(5x - 17) + (7x - 3) + 56 = 180
12x -20 + 56 = 180
12 x + 36 = 180
12x = 180 - 36
12x = 144
x = 144/12
x = 12
By substituting values of x we get,
∠A = (5x - 17)°
= 5 x 12 - 17
= 60 - 17
= 43
∠A = 43°
∠B = (7x - 3)°
= 7 x 12 - 3
= 84 - 3
= 81
∠B = 81°
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Help me and I’ll give you brainliest
Answer: 45°
Step-by-step explanation:
The diagonals in squares are axes of symmetry.
This means the cut the corner angles in half.
90° ÷ 2 = 45°
7 movie tickets for $56 -help please lol-
Answer:
8
Step-by-step explanation:
If 7 tickets equals 56
56/7=8
Answer:
8 Dollars
Step-by-step explanation:
If the question you are asking is how much is a ticket, if 7 tickets cost a total of 56 dollars, then the answer is 8. This is because you would divide the total cost bu how many there are, which would look like 56 / 7 = 8.
Hannah runs down the street to catch her bus. She runs for a total of 12 seconds. On the sidewalk, she runs 16 feet per second. When she crosses the street, she runs 3 feet per second. Hannah runs a total distance of 127 feet.
How many seconds did Hannah spend running on the sidewalk? Enter your answer in the box.
Answer:
7 seconds that Hannah runs on the side walk
Step-by-step explanation:
let's A is the second that Hannah runs on the side walk.
and B is the second that Hannah runss on the cross street. Base on the information we have 2 equations for 2 unknowns .
A + B = 12
16 A + 3 B = 127 simply to add/subtract column we have
=> 16A + 3B = 127 (1)
3A + 3B = 36 (2) runs on the side walk.
And 12-7 =5 seconds is the time that Hannah runs on the cross street.
Hannah spend 7 seconds for running on the sidewalk.
Here,
Hannah runs down the street to catch her bus.
She runs for a total of 12 seconds.
On the sidewalk, she runs 16 feet per second. When she crosses the street, she runs 3 feet per second.
Hannah runs a total distance of 127 feet.
We have to find, How many seconds did Hannah spend running on the sidewalk.
What is Linear equation in two variables?
Linear equations in two variables is defined as, If a, b, and r are real numbers then ax + by = r is called a linear equations in two variables.
Now,
Let X is the second that Hannah spend running on the sidewalk.
And, Y is the second that Hannah runes on the cross the street.
Since, She runs for a total of 12 seconds.
⇒ X + Y = 12 .... (i)
And, On the sidewalk, she runs 16 feet per second. When she crosses the street, she runs 3 feet per second and Hannah runs a total distance of 127 feet.
⇒ 16 X + 3 Y = 127 ....(ii)
By solving equation (i) and (ii), we get;
⇒ X = 7 and Y = 5
Hence, Hannah spend 7 seconds for running on the sidewalk.
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A class in New Zealand found a report suggesting that teenagers' heights in New Zealand are approximately
normally distributed with a mean of 160 cm and a standard deviation of 15 cm. They thought the mean height
at their school was probably larger, so they took a random sample of n = 24 students. The mean height of
students in their sample was Ž = 166.5 cm.
To see how likely a sample like theirs was to occur by random chance alone, the class performed a simulation.
They simulated 80 samples of n = 24 heights from a normal population with a mean of 160 cm and standard
deviation of 15 cm. They recorded the mean of the heights in each sample. Here are the sample means from
their 80 samples:
Answer:
p-value≈0.025
Step-by-step explanation:
Khan Academy
From the stimulated results, the p-value of the test will be 0.025.
What is a p-value?It should be noted that a p-value simply means a measure of the probability which an observed difference could have occurred by random choice.
In this case, the class took a random sample of n = 24 students and the mean height of students in their sample was Ž = 166.5 cm.
The p value of 0.025 indicates that the hypothesis fails to account for the facts that were presented.
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Can someone please help asap
Answer:
[tex]8 \sqrt{2} [/tex]
Step-by-step explanation:
8²+8²=(BC)²
64+64= 128
BC²=128
BC=
[tex]8 \sqrt{2} [/tex]
Find the missing side lengths. Leave your answers as radicals in simplest form.
Please help!!!! Due today
Answer:
B) x = 5sqrt2, y = 5
Step-by-step explanation:
(y) is equal to 5 because both angles are 45 degrees.
From here you can use the Pythagorean theorem to find (x):
a^2+b^2 = c^2
5^2+5^2 = c^2
25+25 = c^2
50 = c^2
sqrt50 = c
5sqrt2 = c (c is x in this case)
Determine if the events are independent or dependent
Answer:
dependent
Step-by-step explanation:
there is no replacement
Answer:
Dependent
Step-by-step explanation:
The cards aren't replaced, so it depends on which ones are taken.
its 9/16 close to 0, 1/2 or 1 explain
Answer: It's closer to 1/2
Step-by-step explanation: It's closer to 1/2 and here's why:
So, 1/2 (exact) is 8/16
0 = 0
1 = 16/16
Since 9/16 is the closest to 8/16 or around 1/2 in this case, it'd be about 1/2. I hope this helps!
Carole worked her 40 regular hours plus 5 O.T. hours at time-in-a-half rate. Her gross pay was $1,163.75. What is her regular hourly rate?
Let her standard pay rate = x
She worked 40 hours for x per hour she also worked 5 hours at 1.5x ( time and a half)
Write an equation:
40x + 5(1.5x) = 1163.75
Simplify:
40x + 7.5x = 1163.75
Combine like terms:
47.5x = 1163.75
Divide both sides by 47.5
X = 24.50
Her regular hourly rate is $24.50
Answer:
let rate be x
by question
40x+7.5x=1163.75
x=1163.75/47.5=24.5
her regular income is $24.5 per hour.
In a class of 23 students, 9 play an instrument and 7 play a sport. There are 3 students who play an instrument and also play a sport. What is the probability that a student does not play an instrument given that they play a sport?
Answer:
There are 23 students
-- 9 students play neither sport
-- therefore, 23 - 9 = 14 students play at least one of the two sports; some play both sports.
Inclusive or: the probability will be: 14 / 23 that a student chosen at random will play at least one of the two sports.
Exclusive or: we need to first find how many students play both sports.
Since 14 persons play sports and since 7 play basketball and 12 play baseball, this requires 7 + 12 = 19 students.
Subtracting 19 - 14 = 5 give the number of students who play both sports.
If we eliminate these 5 persons as well as the 9 who play neither sport, we have to eliminate 5 + 9 = 14 persons.
This gives 23 - 14 = 9 persons who play only one of the two sports.
The probability will be: 9/23 play a sport, but only one sport.
Step-by-step explanation:
The probability that a student does not play an instrument given that they play a sport is 6/7 or approximately 0.857.
What is probability?It is the chance of an event to occur from a total number of outcomes.
The formula for probability is given as:
Probability = Number of required events / Total number of outcomes.
Example:
The probability of getting a head in tossing a coin.
P(H) = 1/2
We have,
To find the probability that a student does not play an instrument given that they play a sport, we need to use conditional probability.
Let A be the event that a student plays a sport and B be the event that a student plays an instrument.
We want to find P(not B | A), which is the probability that a student does not play an instrument given that they play a sport.
We know that,
P(A) = 7/23, P(B) = 9/23, and P(A and B) = 3/23.
Using the formula for conditional probability, we have:
P(not B | A) = P(A and not B) / P(A)
We can find P(A and not B) by using the fact that,
P(A and B) = P(B) - P(A and not B).
P(A and not B)
= P(B) - P(A and B)
= 9/23 - 3/23
= 6/23
Substituting into the formula, we get:
P(not B | A) = (6/23) / (7/23) = 6/7
Therefore,
The probability that a student does not play an instrument given that they play a sport is 6/7 or approximately 0.857.
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Solve the inequality:
4-3x<16
Answer:
x > -4
Step-by-step explanation:
This is solved just like as if it was an equation. Its a two-step equation (inequality) The only thing that's different is with an inequality, it is imperative that you flip the inequality symbol if you multiply or divide by a negative number.
Here, we'll subtract 4 from both sides. Then divide by -3 on both sides. Flip! the < to a >.
see image.
x > -4.
Step-by-step explanation:1. Write the expression.[tex]4-3x < 16[/tex]
2. Subtract "4" from both sides of the equation.[tex]4-3x-4 < 16-4\\ \\-3x < 12[/tex]
3. Divide both sides by "-3" and switch the inequality symbol.[tex]\frac{-3x}{-3} < \frac{12}{-3} \\ \\x > -4[/tex]
Important. See that we switched the inequality symbol from "<" to ">", and this is because the symbol of the coefficient of variable "x" changed from negative to positive when it was divided by "-3". This rule will always be true, any time the symbol of the variable changed, the inequality symbol changes.
4. Verify.If x >-4 is the correct answer, then substituting x by "-4" in the inequation should make the inequation return the same value on both sides of the inequality symbol (>).
[tex]4-3(-4) > 16\\ \\4-(-12) > 16\\ \\4+12 > 16\\ \\16 > 16[/tex]
That's correct! x > -4 is the correct answer.
4 is the slope of a line y - 4x = 0 true or false
it is false but 4 is not y-4x=0
Itzel purchased 18 pounds of oranges.
How many ounces of oranges did she
purchase?
Answer:
288
Step-by-step explanation:
1 pound is equal to 16 ounces
if Itzel purchases 18 pounds, to convert to ounces simply multiply 18 by 16.
Answer:
288
I wish you luck in your assignments.
(I just noticed someone got here in before me and answered WAY better. So I edited this to tell you to give them brainliest.)
just wasting points :P
Answer:
Ok Cool thx i guess.
Step-by-step explanation:
Its rectangle btw.
I’ll give brainliest to whoever answers this
Answer:
[tex] V_{prism} = 222\: cm^3 [/tex]
Step-by-step explanation:
For bottom portion:
l = 8 cm, w = 6 cm, h = 2 cm
[tex] V_1= lwh = 8*6*2= 96 \: cm^3 [/tex]
For top portion:
l = 6 cm, w = 3 cm, h = 9 - 2 = 7 cm
[tex] V_2= lwh = 6*3*7= 126 \: cm^3 [/tex]
[tex] V_{prism} = V_1 + V_2[/tex]
[tex] V_{prism} = 96 + 126[/tex]
[tex] V_{prism} = 222\: cm^3 [/tex]
Another way:
[tex] V_{prism} = 8*6*9-6*5*7[/tex]
[tex] V_{prism} = 432-210[/tex]
[tex] V_{prism} = 222\: cm^3 [/tex]
DB =4.3cm BC=6.7cm
How do I find x° ?
Help me with this !!!!!
Answer:
3. 30
4. 46
5. 55
Step-by-step explanation:
What are the x-intercepts of this quadratic function?
g(x) = -2(x - 4)(x + 1)
A. (4,0) and (-1,0)
B. (-4,0) and (1,0)
C. (-4,0) and (-1,0)
D. (4,0) and (1,0)
Answer:
A. (4,0) and (- 1,0) is the answer
Models come in different scales. A model of a G-scale railroad car has a scale ratio of 1:22.5, and the model is 3 in tall, how tall is the actual car?
Please help me answer this, this is due on Monday for me!!!
A shelf has 20 bags of potatoes. Two of the bags have potatoes starting to go bad.
The probability of drawing a bag with bad potatoes is less than 1.
True or False
The probability of drawing a bag with good potatoes is greater than 0.
True or False
What is the probability of drawing a bag with bad potatoes?
What is the expected probability of the complement of the event?
Answer:
The probability of drawing a bag with bad potatoes is less than 1. True
The probability of drawing a bag with good potatoes is greater than 0. True
What is the probability of drawing a bag with bad potatoes?
The probability of drawing a bag with bad potatoes is (2 bad bags) / (20 total bags) = 0.1 or 10%.
What is the expected probability of the complement of the event?
The complement of the event of drawing a bag with bad potatoes is drawing a bag with good potatoes. The probability of drawing a bag with good potatoes is (18 good bags) / (20 total bags) = 0.9 or 90%.
Uday Tahlan
Choose an entree (steak, chicken, fish, or tofu), a side (mac & cheese, green beans, french fries, or bread), and a drink (water or soda)
Draw a tree diagram to the best of your abilities
Convert:
30 quarts
=
bushels
Round to the nearest hundredths.
Answer:
30 quarts= 0.8057 bushels
rounded to the nearest hundredths = 0.81
Lynn is making a snack. The recipes call for 38 cup of water for oats and 14 cup of water for dried fruit. She only has 1 cup of water. Does she have enough to make her snack? Explain.
Answer:
Below
Step-by-step explanation:
"Lynn is making a snack. The recipes call for 3/8 cup of water for oats and 1/4 cup"
(I changed the numbers to fractions ....)
she needs 3/8 + 1/4 cup ....add them together by finding a common denominator
1/4 = 2/8
then 3/8 + 2/8 = (3+2)/8 = 5/8 cup
if she has one cup of water she has enough....she only needs 5/8 cup
Solve the triangle. Round to the nearest tenth.
39°
16
84°
B
Answer:
A. m<C = 57 degrees, a = 12, b = 19
Step-by-step explanation:
First we can start by calculating Angle C by using the rule that all interior angles of a triangle always add to 180 degrees:
180 - (39+84) = C
180 - 123 = C
C = 57
Now let's calculate side a. We can do this by using the sin rule: [tex]\frac{sin A}{a}=\frac{sin C}{c}[/tex]
According to the diagram we know that Angle A is 39 degrees, Angle C is 57 degrees, and side c is 16 so we can substitute these values into the formula and solve:
[tex]\frac{sin39}{a} =\frac{sin 57}{16} \\\\\frac{0.629320}{a} =\frac{0.838671}{16}\\\\0.629320=0.052417a\\0.629320/0.052417=a\\a= 12[/tex]
We can use the same method to solve for side b:
[tex]\frac{sin84}{b} =0.052417 \\0.994522=0.052417b\\0.994522/0.052417=b\\b= 19[/tex]
We now have the following values:
Angle C = 57 degrees, a = 12, b = 19
We can now see that A/Number 1 is the correct option.
Hope this helped!