3 years ago

Please help me and let me know if number a is wrong or not

Mathematics

2 answers:

Ulleksa [173]3 years ago

7 0

its kinda upside down

RoseWind [281]3 years ago

6 0

It’s wrong. it would be 2A/b

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nikitadnepr [17]

Answer:

a) The sensor will read 75 liters at 5 minutes

Step-by-step explanation:

a) set up as a proportion and cross multiply to solve.

15 liters/1 minute = x/5 minutes

x = 75 liters

4 0

3 years ago

Joe is a waiter. Last week he made $130 in tips working 15 hours, yesterday he made $45 working 5 hours. What is his hourly rate

BigorU [14]

I did the math and if I’m not mistaken he gets 9.26666666667
Aka 9
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3 0

3 years ago

What is the volume of the cylinder?

Elenna [48]

Answer:

Option D. $882\pi\ units^{3}$

Step-by-step explanation:

we know that

The volume of the cylinder is equal to

$V=\pi r^{2}h$

In this problem we have

$r=7\ units$

$h=18\ units$

substitute

$V=\pi (7^{2})(18)=882\pi\ units^{3}$ -----> exact value of the volume

5 0

4 years ago

the perimeter of the rectangle below is 98 units. Find the length of CD. Write your answer without variables. cd=4x+3 cb=5x+1

zimovet [89]

$2(4x + 3) + 2(5x + 1) = 98 \\ 8x + 6 + 10x + 2 = 98 \\ 18x + 8 = 98 \\ 18x = 90 \\ x = 5$
Substitute x with 5,

CD =
$4x + 3 \\ = 4(5) + 3 \\ = 20 + 3 \\ = 23$
CD = 23 units

Hope this helps.

7 0

3 years ago

Read 2 more answers

The total length of wires a b and c is 445 cm wire a is 45 cm longer then wire b and wire b is half as long as wire c how long i

Oksana_A [137]

Answer:

$a = 145\ cm$

Step-by-step explanation:

Given

$a + b + c = 445$

$a = 45 + b$

$b = \frac{1}{2}c$

Required

Determine the length of a

Solve for c in $b = \frac{1}{2}c$

$2 * b = \frac{1}{2}c * 2$

$2b = c$

$c = 2b$

Substitute $c = 2b$ and $a = 45 + b$ in $a + b + c = 445$

$a + b + c = 445$

$45 + b + b + 2b = 445$

$45 + 4b = 445$

Solve for 4b

$4b = 445 - 45$

$4b = 400$

Solve for b

$b = 400/4$

$b = 100$

Recall that: $a = 45 + b$

$a=45+100$

$a = 145\ cm$

6 0

4 years ago