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3 years ago

Shelly got 60 questions correct on her math test.If she got 75% how many questions were on the test?

Mathematics

1 answer:

vekshin13 years ago

5 0

There were 80 questions on the test.

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Factor completely. 5x^2+44x-9

Leni [432]

Answer:

(x + 9)(5x - 1)

Step-by-step explanation:

Given

5x² + 44x - 9

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term.

product = 5 × - 9 = - 45 and sum = + 44

The factors are + 45 and - 1

Use these factors to split the x- term

5x² + 45x - x - 9 ( factor the first/second and third/fourth terms )

= 5x(x + 9) - 1(x + 9) ← factor out (x + 9) from each term

= (x + 9)(5x - 1) ← in factored form

6 0

3 years ago

a store has 30 boxes of melon each box has 4 bags each bag holde 2 melons what is the total number of melon in the store?

Zarrin [17]

180 melons

4 x 2 x 30

8 0

3 years ago

Read 2 more answers

7TH GRADE MATH NEED ASAP

Trava [24]

Answer:

63,590.4

Step-by-step explanation:

8<8<18=1,152x 9216x = 63,590.4

6 0

3 years ago

(Round to the nearest tenth of a percent.) In 2011, the IRS increased the deductible mileage cost to

RUDIKE [14]

Answer:

$\%Change = 8.8\%$

Step-by-step explanation:

Given

$Initial = 51\ cents$

$Final = 55.5\ cents$

Required

Determine the percentage change

Percentage change is calculated as;

$\%Change = \frac{Final - Initial}{Initial} * 100\%$

$\%Change = \frac{55.5 - 51 }{51 } * 100\%$

$\%Change = \frac{4.5}{51} * 100\%$

$\%Change = \frac{4.5* 100\%}{51}$

$\%Change = \frac{450\%}{51}$

$\%Change = 8.8\%$

<em>Hence, the percentage change is approximately 8.8%</em>

6 0

2 years ago

Surely help I’ll brainlist.<br><br> construct a histogram to represent these results.

AnnZ [28]

Answer:

Step-by-step explanation:

You need to first put the numbers in suitable catagories

0-120

120-130

130-140

140-150

then figure out the frequency of them

0-120=4

121-130=20

131-140=2

141-150=2

then put in a graph(sry its not very good i was in a rush)

7 0

2 years ago