Answer:
21.27 cm^2
Step-by-step explanation:
Pentru a calcula aria bazei, putem folosi formula lui Heron Matematic aceasta este;
A = √s (s-a) (s-b) (s-c)
Unde s = (a + b + c) / 2
a, b, c se referă la laturile triunghiului
A = (7 + 7 + 7) / 2 = 21/2 = 10,5
A = √10,5 (10,5-7) (10,5-7) (10,5-7)
A = √10,5 (3,5) (3,5) (3,5)
A = √450.1875
A = 21.2176 cm ^ 2, care este de aproximativ
21.22 cm ^ 2
Need help ASAP
Please
Answer:
area:[tex]16x^2+24x+9[/tex] Perimeter: 16x+12
Step-by-step explanation:
area :[tex](4x+3)^2[/tex]
thats [tex]16x^2+24x+9[/tex]
P: 4(4x+3)
thats 16x+12
Hope this helped you
<3
Red
Answer:
Perimeter is all sides added together, while Area is one side height times length
Step-by-step explanation:
Since your shape is a square all sides are equal so the equation is the same for all sides
Perimeter = 4z+3+4z+3+4z+3+4z+3 or (4z+3)4
14z+12 <= answer for perimeter
Area = (4z+3) (4z+3)
16z^2+12z+12z+9
16z^2+24z+9 <= answer for area
5(2x-3)=24
Help me in this pleasee
Answer:
x = 3.9
Step-by-step explanation:
5(2x-3)=24
Distribute
10x -15 = 24
Add 15 to each side
10x-15+15 = 24+15
10x = 39
Divide each side by 10
10x/10 = 39/10
x = 3.9
What is the value of the expression 5y2 + 4x when x = 2.5 and y = 3?
A weather balloon is launched in Texas from an altitude of 240 feet above sea level. If the balloon rises at a constant rate of 65 feet per
minute, which of the following equations could be used to find t, the time in minutes it will take the balloon to reach an altitude of 11,000
feet?
Onn
200
First off there is not any choices, second off the answer is it would take
165.5 minutes
It will take the balloon 165 minutes 30 seconds to reach an altitude of 11,000
What is a function?A function can be defined as the outputs for a given set of inputs.
The inputs of a function are known as the independent variable and the outputs of a function are known as the dependent variable.
Given, A weather balloon is launched in Texas from an altitude of 240 feet above sea level, and the balloon rises at a constant rate of 65 feet per minute.
Let the height of the balloon is h(t) where t represents time in minutes.
∴ The function that represents the height of the balloon at any point of time is h(t) = 65t + 240.
So, time required to reach the balloon an altitude of 11,000 feet is,
11000 = 65t + 240.
65t = 11000 = 240.
65t = 10760.
t = 10760/65.
t = 165.5 minutes or 165 minutes 30 seconds.
learn more about functions here :
https://brainly.com/question/12431044
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6. A set of data points has a correlation coefficient r = -0.86. Your friend claims
that because the correlation coefficient is close to -1, it is reasonable to use the
line of best fit to make predictions. Is your friend correct? Explain your reasoning.
Answer:
Yes
Step-by-step explanation:
The line of best fit is used in linear regression models to make predictions, the line of best fit gives the relationship between the dependent and independent variables by obtaining the Coefficient of correlation. The Coefficient of correlation is a value which ranges from - 1 to 1. With values close to either - 1 or 1 depicting a strong negative and positive relationship respectively. Hence, with a correlation Coefficient of - 0.86, which signifies a strong negative relationship, then we can go ahead and make prediction using the model.
In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 48 and a standard deviation of 9. Using the Standard Deviation Rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 30 and 66?
Answer:
95.44%
Step-by-step explanation:
Mean (m) = 48
Standard deviation (sd) = 9
n = 12
Zscore = (x - m) /sd
X = 30
Zscore = (30 - 48) / 9
Zscore = - 2
X = 66
Zscore = (66 - 48) / 9
Zscore = 2
percentage of daily phone calls numbering between 30 and 66 = P(z < 2) - p(z < - 2)
P(z < 2) = 0.9772
P(z < - 2) = 0.0228
Hence,
0.9772 - 0.0228 = 0.9544
0.9544 * 100% = 95.44
Need Help ASAP
The following federal tax table is for weekly earnings of a single person.
(Table is in the picture I took)
How will the federal tax affect a gross weekly pay of $740 for a single person claiming 1 exemption?
Answer choices:
A.) It increases gross pay by $62
B.) It decreases gross pay by $62
C.) It increases gross pay by $65
D.) It decreases gross pay by $65
Answer:
id choose B but it could also be D
Step-by-step explanation:
either way I would still choose B
Which of the following can you add/subtract?
A) 5√4 + 6√4
B) 3√7 − 3√5
C) 9 √ + 39√
Answer:
A
Step-by-step explanation:
you can only +/- an equation like this with the same square root
Help!! Is it minimum or maximum??
please help me solve this problem
99/225 simplified to the lowst term
Answer:
[tex]\frac{11}{25}[/tex]
Step-by-step explanation:
Answer:
11/25 the lowest this fraction can go.
Emily is adding 51 and 29. Which steps can she use to add the numbers
Answer: She can first add 20 to 51, 51+20=71, then she can add 9, 71+9=80.
So 51 + 29 = 80
Step-by-step explanation: Hope this helps!
what is the factored form of x^3 + 125?
Answer:
(X+5)(x^2-5x+25)
Step-by-step explanation:
According to the chart, which building took longer to construct: the Taipei 101 or the Petronas Towers?
Answer:
im not 100 percent sure but i think its the taipei 101
Step-by-step explanation:
im brain dead and i dont even trust myself but i passed the quiz so hope this helps
Answer:
C. they took the same amount of time
Step-by-step explanation:
a fish tank is in the shape of a cube the. volume of the fish tank is 64 cubic feet. What is the area of one face of the fish tank in square feet?
16 square feet (also can be written with an exponent 2 as in 16 ft^2)
Cube root of 64 is 4.
Why cube root? Because you need to multiply three numbers to get volume ( length, width, height.)
4x4 is 16.
Area, so you have to add the square feet
16 ft^2
Or
16 square feet
Pls mark branliest if this helped
What is the difference between -3 and -12?
O-15
O 15
O -9
O 9
A team has won 51 out of 68 games. Explain how to use the bar diagram to find the percent of games the team has won. A 2-column table with 5 rows. Column 1 has entries 25 percent, 25 percent, 25 percent, 25 percent. Column 2 has entries 17, 17, 17, 17, 68.
Answer:
a total number of games played would be 68
Answer:
In the diagram, 17 represents 25% of the total games. Since 17 times 3 equals 51, you use the first 3 columns to find an answer of 75%.
Step-by-step explanation: Make me brainliest plz
Jessica is buying roses to sell at a fundraiser for school. She needs to purchase the roses at the lowest price per rose to allow for the highest profit margin. The roses are sold in bunches of 4, 6, 8, or 12. The chart below shows the prices for the different bunches of roses. Roses in Bunch Price 4 $7.98 6 $8.50 8 $10.25 12 $12.25 Based on the information in the chart, which size bunch would be the least expensive per rose? A. 4 B. 6 C. 8
Answer:
how do i comment
Step-by-step explanation:
convert the mixed number into a decimal. 5 1/4 That is the fraction of 5 and 1/4
A. 5.25
B. 5
C. 525
D. 52.5
Answer:
The answer is A.
Step-by-step explanation:
I did it.
Able has a younger sister and an older brother.
- Able’s age can be represented by x.
- Able’s sister is 4 years younger than him.
- Able’s older brother is twice as old as he is.
- The combined age of all three siblings is 32.
How old is Able’s younger sister?
9 years
13 years
5 years
3 years
Answer:
5 years
Step-by-step explanation:
1. if able's age is x, then his sister's is x-4, and his brother's is 2x
2. if these sum to 32, then we can formulate the equation x+(x-4)+2x=32
3. now solve for x, 4x-4=32, 4x=36, x=9
4. if able's sister is x-4 years old, she is 9-4, or 5 years old
1. Brand A scooter has a top speed that goes 2 miles per hour faster than Brand B. If after 3 hours, Brand A scooter traveled 24 miles at its top speed, at what rate did Brand B scooter travel at its top speed if it traveled the same distance? Write an equation to determine the solution. Identify the if-then moves used in your solution.
Answer:
6 miles/hr
Step-by-step explanation:
Given:
Top speed of Brand A scooter goes 2 miles per hour faster than Brand B.
Distance traveled by brand A scooter on its top speed in 3 hours = 24 miles
To find:
The rate at which brand B traveled the same distance at its top speed ?
Solution:
Let the top speed/rate of brand B scooter = [tex]x[/tex] miles/hr
According to question:
Top speed/rate of brand A scooter = [tex]x+2[/tex] miles/hr
Formula:
[tex]Distance = Speed \times Time[/tex]
Distance is given to be equal to 24 miles:
24 = ([tex]x+2[/tex]) [tex]\times 3[/tex] ...... (1)
Solving the above equation by first dividing the equation on both sides with 3:
[tex]\dfrac{24}{3} = \dfrac{(x+2)\times 3}{3}\\\Rightarrow 8 = (x+2)[/tex]
Now subtracting 2 from both the sides:
[tex]\Rightarrow 8-2=x+2-2\\\Rightarrow x=6\ miles/hr[/tex]
Therefore, the answer is:
Top speed of scooter B is 6 miles/hr.
The if-then moves used to solve the equation (1) are:
Dividing by a non zero number on both sides, then subtracting a number on both sides.
A Toy Story poster is enlarged. The new length is 5 feet and the width is 3 feet. The original length was 6 inches what was the width?
Can someone please help me with these 50 points I just don't get it I need help?
Answer: I think the first one is A. and the next one is B
Step-by-step explanation:
Question 7-9. If you don’t know 7 or 8 could you please just answer 9.
Answer:
The answer to #9 is 8.06
Step-by-step explanation:
I don't have time for the other questions tho sorry :/
Plz help
2.
The midpoint of AB is M. If the
coordinates of M are (,-2) and
the coordinates of B are (6,1),
what are the coordinates of A?
a) (-5,-5)
b) (2, -10)
c) (-10, 2)
d) (-13/4,-3/2
e) (-5,5)
Answer:
A
Step-by-step explanation:
the distance between M and point be is 5.5 for the x coordinate and 3 for the y coordinate. to find point b you added 5.5 to to the x and 3 to the y so if you subtract this from point M you get (-5,-5).
A polynomial function with a leading coefficient of 1 and multiplicity 1 for each root has these zeros:
-2√11
4
Which are factors of the polynomial? Check all that apply.
Answer:
1.
[tex]x - 2 \sqrt{11} [/tex]
2.
[tex]x + 2 \sqrt{11} [/tex]
5.
[tex]x - 4[/tex]
Step-by-step explanation:
It is correct on Edge!
Give thanks please!
Answer:
3
Step-by-step explanation:
edge 2022
Urgent!!
Use the model to solve for x.
answer: x=8
turn the picture into numbers
The next train will arrive in 32 minutes and 30 seconds.
In how many seconds will the next train arrive?
Answer:
1950 seconds
Step-by-step explanation:
if sixty seconds are in a minute, then you just multiply 32, the number of minutes by the number of seconds in a minute and add 30.
EMERGENCY PLEASE HELP (22 points)
Look at pic to see problem
Answer:
(-4, 7)
Step-by-step explanation:
x is found on the x axis its -4
to find y you go up to where the point bvb is it is located at positive 7
Answer:
(-4,7)
Step-by-step explanation:
This is the answer because the x-axis is -4, and the y-axis is 7. If it was put in any other way it would be wrong.
Which table shows a proportional relationship ?? Pls help
Answer:
Option 2
Step-by-step explanation:
If you multiply 2 by 2 you get 4. If you multiply 3 by 2 you get 6. If you multiply 4 by 2, you get 8. If you multiply 5 by 2 you get 10. A proportional relationship is where you can multiply all the numbers by a certain number to get the answer. In this case, all the numbers in the left column could get multiplied by 2 to get the number in the right column.