3 years ago

Nancy mistakenly measured the temperature of a heated liquid to be 48°C. The actual

Mathematics

1 answer:

Alenkinab [10]3 years ago

7 0

Answer:

4.17% (nearest hundredth)

Step-by-step explanation:

percent change = [ (difference between initial value and final value) ÷ initial value] x 100

⇒ percent change = [ (50 - 48) ÷ 48 ] x 100 = 4.17% (nearest hundredth)

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Solve 2x+y=7 for y y=[]

VMariaS [17]

Answer:

Step-by-step explanation:

ok so y= 7-2x just need to move 2x to the other side

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3 years ago

Read 2 more answers

(a) 127.5 is what percent of 51 ?

ExtremeBDS [4]

To solve this, you need to divide 127.5 by 51:
127.5/51 = 2.5
To find the percent, multiply 2.5 by 100:
2.5 x 100% = 250%
So 127.5 is 250% of 51

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4 years ago

A cone has a volume of 2,355 cubic inches and a height of 10 inches. How many inches is the diameter of the cone

Neporo4naja [7]

Hello there,

Okay well first we right down what we already know:

- volume of 2,355 cubic inches

- the height is 10 inches

Now we write down the equation for the volume of a cone: V = πr² $\frac{h}{3}$

lets plug in what we know into the equation

2,355 = πr² $\frac{10}{3}$

now we simplify to solve for r

2,355 / 10/3 = 706.5 = πr²

706.5/π = r²= 224.89

now since its r² we take the square root of 224.89

r = 15 inches

for diameter we multiply 15 by 2

diameter = 30 inches

Hope I helped,

Amna

4 0

3 years ago

Six times a number is decreased by 20 which is equal to three times the number increased by 4. what is the number?

loris [4]

Let the number be a
6a - 20 = 3a + 4
Group like terms
6a - 3a = 20 + 4
3a = 24
divide through by 3
a = 8
Therefore the number is 8

8 0

2 years ago

Maggie has a container in the shape of a right prism . The formula for its surface area is SA = Ph + 2B solve for h.

8090 [49]

Answer:

The choose first.

$h = \frac{SA - 2B}{P}$

Step-by-step explanation:

$SA = Ph + 2B \\ \\ Ph = SA - 2B \\ \\ h = \frac{SA - 2B}{P}$

I hope I helped you^_^

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3 years ago