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3 years ago

14

In 2013 approximately 1.6 million students took the critical reading portion of the sat exam the mean score modal score and the

standard deviation were calculated to be 496 430 115 which interval reflects 95 percent of the critical reading scores

1 answer:

Citrus2011 [14]3 years ago

6 0

Onions are good for you !! :)))

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Perform the following division:

Radda [10]

Hey!

Alright, the first step to solving this division problem would be to convert the mixed fraction into a simple fraction. To do that, we'll multiply the denominator by the whole number and then add that total to the numerator.

<em>Original Fraction :</em>
$3 \frac{3}{4}$

<em>New Fraction {Changed by Conversion} :</em>
$\frac{15}{4}$

Now that we've successfully done that we'll have to change the equation.

<em>Old Equation :</em>
$\frac{15}{4}$ ÷ $\frac{2}{8}$ = ?

<em>New Equation {Changed by Flipping the Second Fraction and the Symbol} :</em>
$\frac{15}{4}$ · $\frac{8}{2}$ = ?

Now we multiply straight across.

<em>Old Equation :</em>
$\frac{15}{4}$ · $\frac{8}{2}$ = ?

<em>Solved :</em>
$\frac{120}{8}$

Almost done!
Now we have to simplify the fraction.

<em>Old Fraction :</em>
$\frac{120}{8}$

<em>New Fraction {Changed by Simplification} :</em>
$\frac{15}{1}$

Now just convert it to a whole number by removing the fraction line and the number, and that's it!

<span><em>So, $3 \frac{3}{4}$ ÷ $\frac{2}{8}$ equals</em></span> 15.

Hope this helps!

- Lindsey Frazier ♥

7 0

3 years ago

Twice a number is equal to 35 more than seven times the number. Find the number

amm1812

number - n

Twice a number - 2n

Seven times the number - 7n

2n = 7n +35

7n-2n = -35

5n = -35

n = - 7

Check:

2(-7) = 7(-7) +35

-14 = -49 + 35

-14 = -14 True

The number is (- 7).

8 0

3 years ago

What is the solution to w-11=1.3

trapecia [35]

<span>Simplifying w + -11 = 1.3

Reorder the terms: -11 + w = 1.3

Solving -11 + w = 1.3

Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + w = 1.3 + 11

Combine like terms: -11 + 11 = 0 0 + w = 1.3 + 11 w = 1.3 + 11

Combine like terms: 1.3 + 11 = 12.3 w = 12.3

Simplifying w = 12.3 <--- (Answer)

Happy studying ^-^</span>

7 0

3 years ago

Read 2 more answers

(2A)<br> Find f(2x + 4) for f(x) = 1 - x2

Aleksandr-060686 [28]

Answer:

f(2x + 4) = -4x² - 16x - 15

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

Distributive Property

<u>Algebra I</u>

Terms/Coefficients
Expanding (FOIL)

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

f(x) = 1 - x²

<u>Step 2: Evaluate</u>

Substitute in <em>x</em> [Function f(x)]: f(2x + 4) = 1 - (2x + 4)²
Expand [FOIL]: f(2x + 4) = 1 - (4x² + 16x + 16)
(Parenthesis) Distribute negative: f(2x + 4) = 1 - 4x² - 16x - 16
Combine like terms: f(2x + 4) = -4x² -16x - 15

8 0

2 years ago

What is seven times 5

Elodia [21]

Answer:

35 cuh

_____________________________________________

6 0

3 years ago