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3 years ago

Which equation is equal to 4a + 2b = 10

Mathematics

1 answer:

seropon [69]3 years ago

4 0

Answer:

2a +b =5

Step-by-step explanation:

4a + 2b = 10

Divide each side by 2

4a/2 +2b/2 = 10/2

2a +b =5

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2 years ago

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andrew-mc [135]

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3 years ago

What is the driving time for a 2100-mile trip if you drive at an average speed of 45 miles per hour?

riadik2000 [5.3K]

Answer:

46 hours and 42 minutes

Step-by-step explanation:

2100/45 = 46.7

46 hours and 42 minutes

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3 years ago

I did 3 over 7 then 8 over x. I'm getting decimals. ‍♀️

julia-pushkina [17]

Answer:

The length of side b is 9.

Step-by-step explanation:

Triangles are similar if they have the same shape, but can be different sizes.

When two figures are similar, the ratios of the lengths of their corresponding sides are equal.

If you know that two objects are similar, you can use proportions and cross products to find the length of an unknown side. We know that the triangle $ABC$ is similar to the triangle $XYZ$ . Therefore the following relation must be true:

$\frac{AB}{AC} =\frac{XY}{XZ}$

We know that side $AB$ is equal to 8, side $AC$ is equal to b, side $XY$ is equal to $2\frac{2}{3}$ , and side $XZ$ is equal to 3.

Substituting these values into the above relation and solving for b we get that:

$\frac{8}{b} =\frac{2\frac{2}{3} }{3}\\\\\mathrm{Convert\:mixed\:numbers\:to\:improper\:fractions}:\quad 2\frac{2}{3}=\frac{8}{3}\\\\\frac{8}{b}=\frac{\frac{8}{3}}{3}\\\\8\cdot \:3=b\frac{8}{3}\\\\24=b\frac{8}{3}\\\\8b=72\\\\b=9$

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3 years ago

You planted 488 acres of corn last season. You sold all your corn: 8,120 bushels in August and 46,100 bushels in September. What

strojnjashka [21]

Add August and September for total amount of bushels:

46,100 + 8,120 = 54,220 total bushels

Divide total bushels by total acres:

54,220 / 488 = 111.1 = 111 bushels per acre

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3 years ago