3 years ago

Simplify the expression. 7x2 + 3 - 5(x2 - 4)

Mathematics

1 answer:

luda_lava [24]3 years ago

5 0

Answer

Step-by-step explanation:

7*2=14

-5(2-4)= -10+20=10

14+3+10=17+10=27

27 is your answer your welcome. :)

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6. cory gets paid every two weeks. he works 40 hours per week at $7.75 per hour. cory has the following deductions: 8% for medic

aliya0001 [1]

Answer: 429.88

Step-by-step explanation:

The first 40 hours is at 9.50

40 *9.50 =380

The remaining hours is at 9.50 * 1.5 or 14.25

43.5 -40 = 3.5

3.5 * 14.25

49.875 = 49.88 ( rounding to the nearest cent)

Add together

380+49.88 =429.88

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3 years ago

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As an estimation we are told 5 miles is 8 km. <br> Convert 2.5 miles to km.

Digiron [165]

Answer:

$4km$

Step-by-step explanation:

In order to find the answer to this question you must simply divide.

$5m=8km$

$2.5m=4km$

$8\div2=4$

$5=2.5+2.5$

$=4km$

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3 years ago

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mylen [45]

Answer:

tohw9

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Step-by-step explanation:

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3 years ago

What's is an equation of the line that passes through the point(-3,-1) and is perpendicular to the line x-2y=6

katrin2010 [14]

Answer:

$y+1=-2(x+3)$

Step-by-step explanation:

Slope is negative reciprocal when two lines are perpendicular

m1=1/2 therefore m2=-2

The equation of the line in point-slope form is given as

$y-y_1=m_2(x-x_1)$

Here m=-2 and (x1, y1)=(-3, -1)

Therefore,

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3 years ago

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zaharov [31]

Answer:

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Step-by-step explanation:

This answer because they are both right triangles and are near the same size

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3 years ago