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photoshop1234 [79]

3 years ago

14

During second period, Edna completed a grammar worksheet. She got 57 questions correct and 18 questions incorrect. What percenta

ge did Edna get correct?

1 answer:

irinina [24]3 years ago

5 0

57+18=75
57/75 x 100 = 76%
hope this helps! :)

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Please help very urgent!!

adelina 88 [10]

Answer:

4300 $\frac{67}{1000}$

Step-by-step explanation:

evaluate each part

4 × 1000 = 4000

3 × 100 = 300

6 × $\frac{1}{100}$ = $\frac{6}{100}$ × $\frac{10}{10}$ = $\frac{60}{1000}$

7 × $\frac{1}{1000}$ = $\frac{7}{1000}$

Thus

4000 + 300 + $\frac{60}{1000}$ + $\frac{7}{1000}$

= 4300 $\frac{67}{1000}$

4 0

3 years ago

What is the value of the expression 8−28−2 ?

natulia [17]

The answer is -22 first subtract 8 by 28 which is -20 then add 2 which is -22

4 0

3 years ago

What is the difference?

Serhud [2]

Answer:

The option $\frac{(x+5)(x+2)}{x^3-9x}$ is correct

The difference of the given expression is

$\frac{2x+5}{x^2-3x}-(\frac{3x+5}{x^3-9x})-({\frac{x+1}{x^2-9})=\frac{(x+5)(x+2)}{x^3-9x}$

Step-by-step explanation:

Given expression is $\frac{2x+5}{x^2-3x}-(\frac{3x+5}{x^3-9x})-({\frac{x+1}{x^2-9})$

To find the difference of the given expression as below :

$\frac{2x+5}{x^2-3x}-(\frac{3x+5}{x^3-9x})-({\frac{x+1}{x^2-9})$

$=\frac{2x+5}{x(x-3)}-(\frac{3x+5}{x(x^2-9)})-({\frac{x+1}{x^2-9})$

$=\frac{2x+5}{x(x-3)}-(\frac{3x+5}{x(x^2-3^2)})-({\frac{x+1}{x^2-3^2})$

$=\frac{2x+5}{x(x-3)}-(\frac{3x+5}{x(x-3)(x+3)})-({\frac{x+1}{(x-3)(x+3)})$

( using the formula $a^2-b^2=(a+b)(a-b)$ )

$=\frac{2x+5(x+3)-(3x+5)-x(x+1)}{x(x-3)(x+3)}$

$=\frac{2x^2+6x+5x+15-3x-5-x^2-x}{x(x-3)(x+3)}$ (adding the like terms)

$=\frac{x^2+7x+10}{x(x^2-9)}$ ( by factoring the quadratic polynomial )

$=\frac{(x+5)(x+2)}{x^3-9x}$

Therefore $\frac{2x+5}{x^2-3x}-(\frac{3x+5}{x^3-9x})-({\frac{x+1}{x^2-9})=\frac{(x+5)(x+2)}{x^3-9x}$

Therefore the difference of the given expression is

$\frac{(x+5)(x+2)}{x^3-9x}$

Therefore option $\frac{(x+5)(x+2)}{x^3-9x}$ is correct

8 0

3 years ago

Calculate the area of rectangle if the area of the shaded triangle is 2.6cm

bagirrra123 [75]

Answer:

12

Step-by-step explanation:

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3 years ago

Mary needs 2 kilograms of potatoes. Which number sentence could be used to figure out how many grams of potatoes Mary needs? (1,

Darina [25.2K]

The answer is B. If 1 kilogram is 1,000 grams and mary needs 2 kilograms of potatoes she would multiply 2 by 1,000 equaling 2,000.

4 0

4 years ago