Answer:
Step-by-step explanation:
Given that, r varies inversely with u. r=k÷u, k being the constant.
Therefore, k=8×5, ( after making k the subject of your formula).
This implies that k=40.
Now, according to the formula r=k÷u,
r=40÷55
Therefore, r=0.72
sara 225 stamps and Jack has 180 stamps calculate jack stands as a percentage to Sara
Answer:
It is 80%
Step-by-step explanation:
180 divided by 225 = 80%
What is the value of the expression (x – 2y)(x + 2y) when x= 4 and y = 2?
Answer:
0
Step-by-step explanation:
To solve this, you first plug in the 4 and 2 where the x and y's go, making the expression (4 - 2(2))*(4 + 2(2)). Then you solve each parenthesis (below).
(4 - 2(2))*(4 + 2(2)).
(4 - 4)*(4 + 4).
0*8
0
Hope this helped! If you have any questions, feel free to message me :)
heolp ASAPPPPPPP!!!! Suppose three riders rode a total of 182 miles.
If they used a total of 13 horses, and rode each horse the same number of miles, how many miles did they ride before replacing each horse?
HELP NOW
They rode
__________miles before replacing each horse.
Answer:
14 miles
Step-by-step explanation:
You divide. 132/13
Which gives you 14. Every 14 miles, the riders replaced a horse.
So, They rode 14 miles before replacing each horse.
Hope this helps:)
Answer:
14 miles
Step-by-step explanation:
182/13 = 14 miles
Assuming each horse was only ridden once
then a total of 16 horses were ridden for a total of 182 miles
182 miles /13 horses = 14 miles horse
Of course, if each horse was ridden more than once before being replaced the distance between replacements could be reduced.
Note that the fact that there were 3 riders is irrelevant.
I get brain damage from these please help me. I need a detailed answer of how to do this as well
Can someone please help me on the question that i asked ???? pleases will mark brainleist
Answer:
2.75
Step-by-step explanation:
What Does C equal in
[tex]\sqrt{8c+4}[/tex]
Along with the answer, please provide an explanation on how to do the +4
Answer:
See below.
Step-by-step explanation:
We have the expression:
[tex]\sqrt{8c+4}[/tex]
And we want to determine the domain restrictions of the expression.
Remember that the radicand (expression under the square root) must always be positive or 0. This is because we can't take the square root of a negative (and the square root of 0 is just 0). So, to find the domain restrictions, we can write and solve for the following inequality:
[tex]8c+4\geq0[/tex]
This is saying (8c+4) must be greater than or equal to 0. In other words, it's positive or 0.
So, solve for c. Subtract 4 from both sides:
[tex]8c\geq-4[/tex]
Now, divide both sides by 8. This yields:
[tex]c\geq4/8\\c\geq -1/2[/tex]
So, our c must be greater than or equal to -1/2. If it is less than -1/2, we won't have a solution.
0.4 = -9.8 -y + 2.8y
Answer: [tex]y=5.666667[/tex] or [tex]y=5 \frac{6}{9}[/tex] in fraction
Step-by-step explanation:
1. Simplify -9.8-y+2.8y to -9.8+1.8y
0.4=-9.8+1.8y0.4=−9.8+1.8y
2. Regroup terms
0.4=1.8y-9.8
3. Add 9.8 to both sides.
0.4+9.8=1.8y
4. Simplify 0.4+9.8 to 10.2
10.2=1.8y
5. Divide both sides by 1.8
[tex]\frac{10.2}{1.8} =y\\[/tex]
6. Simplify [tex]\frac{10.2}{1.8\\}[/tex] to 5.666667
5.666667 = [tex]y[/tex]
7. Switch sides.
[tex]y=5.666667[/tex]
Hope this helps and can you please mark me brainliest because I just need 1 more brainliest to become expert:)
Answer:
[tex]y=\frac{17}{3}\\\\y =5\frac{2}{3}[/tex]
Step-by-step explanation:
[tex]0.4 = -9.8 -y + 2.8y\\\\Switch\:sides\\\\-9.8-y+2.8y=0.4\\\\\mathrm{Add\:similar\:elements:}\:-y+2.8y=1.8y\\\\-9.8+1.8y=0.4\\\\\mathrm{Multiply\:both\:sides\:by\:}10\\\\-9.8\times\:10+1.8y\times\:10=0.4\times\:10\\\\Refine\\\\-98+18y=4\\\\\mathrm{Add\:}98\mathrm{\:to\:both\:sides}\\\\-98+18y+98=4+98\\\\Simplify\\\\18y=102\\\\\mathrm{Divide\:both\:sides\:by\:}18\\\\\frac{18y}{18}=\frac{102}{18}\\\\Simplify\\\\y=\frac{17}{3}\\\\y =5\frac{2}{3}[/tex]
I need help to solve this math problem
12 yd = __ ft
Answer:
36 feet
Step-by-step explanation:
12inches =1 yard
Answer:
36 feet
Step-by-step explanation:
There are 3 feet in a yard, so all you have to do is multiply 12 by 3. 12x3=36
Have a great day!!! I hope this helps C:
Write an equation of the line with the given slope and y-intercept. slope: -7 y-intercept: 2
Answer:
y= -7x+2
Step-by-step explanation:
Answer:
y = -7x + 2
Step-by-step explanation:
The y-intercept is 2. The slope is x which is -7.
Write the equation now.
-7x + 2.
~I hope I helped you! :)~
Please Answer!!
2t+6<10 or -t+7≤2
Answer:
the other one is t >= 5. hope this helps
14=−2c−6−3c what is the value of c?
Answer:
C=-4 (I'm not sure why my negative symbols are not showing up properly, the answer is C equals a negative four.)
Step-by-step explanation:
14=-2c-6-3c
14=-5c-6
5c+14=-6
5c=-20
c=-4
Which of the binomials below is a factor of this trinomial? 4x2 + 12x + 9
A. 2x-3
B. 2x-1
C. 2x+1
D. 2x+3
Answer:
d-2x-3
Step-by-step explanation:
The factor of the trinomial will be (2x + 3) and (2x + 3). Then the correct option is D.
What is a factorization?It is a method for dividing a polynomial into pieces that will be multiplied together. At this moment, the polynomial's value will be zero.
The trinomial is given below.
⇒ 4x² + 12x + 9
Then the factor of the trinomial will be
⇒ 4x² + 12x + 9
⇒ 4x² + 6x + 6x + 9
⇒ 2x(2x + 3) + 3(2x + 3)
⇒ (2x + 3)(2x + 3)
⇒ (2x + 3)²
Then the correct option is D.
More about the factorization link is given below.
https://brainly.com/question/6810544
#SPJ2
58 (6x+2)
Find the value x
Find the mean.
Z-score = -1.4
Standard Deviation: 7
x = 20
Answer:
9.6
Step-by-step explanation:
A scale drawing of a school bus has a scale of 12 inch to 5 feet. If the length of the school bus is 412 inches on the scale drawing, what is the actual length of the bus? Explain or show your reasoning. A scale drawing of a lake has a scale of 1 cm to 80 m. If the actual width of the lake is 1,000 m, what is the width of the lake on the scale drawing? Explain or show your reasoning.
Answer: Actual length of the bus = 171.67 feet
Width of the lake on the scale drawing = 12.5 inches
Step-by-step explanation:
Given : A scale drawing of a school bus has a scale of 12 inch to 5 feet.
i.e. 12 inch = 5 feet
[tex]\Rightarrow \text{ 1 inch}=\dfrac{5}{12}\text{ feet}[/tex]
If length of school bus on scale drawing = 412 inches
Then, Actual length of bus = [tex]\dfrac{5}{12}\times412=171.67\ \text{feet}[/tex]
A scale drawing of a lake has a scale of 1 cm to 80 m.
If the actual width of the lake is 1,000 m
then, the width of the lake on the scale drawing = [tex]\dfrac{1000}{80}=12.5\text{ inches}[/tex]
Which of the following is most likely the next step in the series?
Answer:
I believe it C
Step-by-step explanation:
Brainliest ??
Answer:
C
Step-by-step explanation:
I'd say C because:
The colors alternate between blue and red, so the next color is going to be red.At first, a vertical line was taken out, next a horizontal line was taken out, so next would be a vertical line being taken out.It's all about patterns.
What is the slope of the line graph?
Answer:
The slope of the line graph is (12,-6)
Step-by-step explanation:
If you start at the bottom point and go up you will count 12. Then, if you go 0ver until you get to the top point you will count 6. Since you are going back, it would be a -6.
-3 2/5 - 5/6
I dont just need the answer. I wanna know how to do it.
Answer:
so do you mean the step by step??
Answer:
- 4 ⁷/₃₀Step-by-step explanation:
= -3 2/5 - 5/6
= - 17/5 - 5/6 ---- LCM of 5 & 6 is 30
= _ 17 * 6 _ 5 * 5
5 * 6 6 * 5
= _ 102 - 25
30
= _ 127
30
= 4 ⁷/₃₀
Dan invests £800 into his bank account. He receives 5% per year compound interest. How much will Dan have after 4 years? Give your answer to the nearest penny where appropriate.
Answer:
£972.41
Step-by-step explanation:
1 x 0.5 =1.05
1.05x 800 ^4= £972.405
rounded is £972.41
Find the area of the shaded region.
Round to the nearest tenth.
Answer:
(Assuming they are both right triangles)
214.5 sq ft
Step-by-step explanation:
Area of a right triangle= leg×leg / 2
25×25 / 2 = 312.5
14×14 / 2 = 98
312.5-98= 214.5
Solve this equation. Enter your answer in the box. 1/3 (y+7)=3(y−1)
Answer:
y=2
Step-by-step explanation:
y+7=9(y-1)
y+7=9y-9
16=8y
2=y
What is the range of the function shown on the graph above ?
Ummm...person...you do know we need to see the graph, not the answers, right?
Answer:
Step-by-step explanation:
It's the-9 one
Solve by factoring:
x² – 5x - 14=0
O A. x = 7,X = -2
B. x = -7, x = 2
O C. x = -1, x = 14
O D. x=-14, x = 1
Answer ASAP!
Answer:
A
Step-by-step explanation:
Given
x² - 5x - 14 = 0
Consider the factors of the constant term (- 14) which sum to give the coefficient of the x- term (- 5)
The factors are - 7 and + 2, since
- 7 × 2 = - 14 and - 7 + 2 = - 5, thus
(x - 7)(x + 2) = 0
Equate each factor to zero and solve for x
x - 7 = 0 ⇒ x = 7
x + 2 = 0 ⇒ x = - 2
Answer:
A. x=-7, x=2
Step-by-step explanation:
Can somebody answer ASAP!!!!!!
Help Needed !Find The Measure Of The Indicated Angle
50
Step-by-step explanation:
Answer:
50
Step-by-step explanation:
Add the two angles
80+50=130
The total degree of a triangle is 180 so subtract
180-130=50
(its also an isosceles triangle)
Seventeen less than one-thrid of a number y.
Answer:
In the explanation. :)
Step-by-step explanation:
1/3x-17y
Hope this helps. Have a great day!
Need help ASAP!!
How many points do you need to know to draw the graph of a direct proportionality? which are?
how do you solve distributive properties ?? and pre algebraic expressions/equations i have a test over it all and i'm in 7th grade plz help ASAP
Answer:
I was totally in your shoes then..
Step-by-step explanation:
Watch Fort Bend Tutoring on YT, he got me through those math problems...I can assure it will help, and he makes Math fun
what is –29 + 30 i need help please!!!
Answer:
1
Step-by-step explanation:
a negative plus a positive is equal to a negative minus a negative. -29+30=-29-(-30)
Take away negative 30 from -29 and you get 1.
What is the answer?
A. B. C. or D?
Answer: I believe it is either B or D because it uses rotation!
Step-by-step explanation: