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3 years ago

#MathHelp HelpPlease

Mathematics

1 answer:

Ivenika [448]3 years ago

3 0

The correct answer is: [C]: " c² <span>− 16 " .
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What is the independent variable and the dependent variable and the equation of this

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H independent

e dependent

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3 years ago

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The newborn weights 7 pounds and is 21 inches long. What is the ratio of weight to length?

Nikolay [14]

Answer:

1:3

Step-by-step explanation:

The required ratio will be ,

7:21

= 1 :3

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Kendra needs 1 dollar to buy a ball she has 73 cents what coins does she need to add her 73 cents

Alexeev081 [22]

Answer:

Kendra needs 3 coins (1 coin of 25 cent & 2 coins of 1 cent) to add 27 cents in 73 cents to make 1 dollar

Step-by-step explanation:

Given :

Kendra has 73 cents

She need 1 dollar to by a ball

∴ She requires additional money = $1\ dollar - 73 \ cents = 27 \ cents$

Standard Coins available are 50 cents , 25 cents, 10 cents, 5 cents and 1 cent.

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3 years ago

4/7<br> of a number is 36<br> What is the number?

katrin [286]

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2 years ago

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for a class of 24,78% of students got a B or better on the tex How many students is this? Round to a wholenumber

natita [175]

Step 1

Use the ratio of the number to the percentage to get the required answer.

$\frac{Total\text{ number of students}}{\text{The required number of students}}=\frac{Total\text{ percentage of the class}}{\text{Given percentage}}$

Where,

$\begin{gathered} \text{The total number of students = 24} \\ \text{The required number }of\text{ students= x} \\ \text{The total percentage of the class = 100} \\ \text{Given percentage = 78} \end{gathered}$

Step 2

Get the required answer

$\begin{gathered} \frac{24}{x}=\frac{100}{78} \\ 100x=24\times78 \\ 100x=1872 \\ \frac{100x}{100}=\frac{1872}{100} \\ x=\text{ 18.72} \\ \text{Hence} \\ x\approx19students\text{ rounded to a whole number } \end{gathered}$

The number of students that got B or a better grade on the test = 19 students rounded to a whole number.

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1 year ago