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2 years ago

11. The total area of a quilt is defined as the equation: A = x² + 13x + 36. Find the possible side

Mathematics

1 answer:

Luda [366]2 years ago

3 0

Answer:

(x + 9)(x4)

Step-by-step explanation:

$A = {x}^{2} + 13x + 36 \\ \\ = {x}^{2} + 9x + 4x + 36 \\ \\ = x(x + 9) + 4(x + 9) \\ \\ = (x + 9)(x+4)$

So, the possible side

lengths of the quilt are (x + 9) and (x + 4) units.

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A 16 1/2 kilometer stretch of road needs repairs. Workers can repair 2 1/4 kilometer of road per week. How many weeks will take

liraira [26]

Answer:

$7\frac{1}{3}\ weeks$

Step-by-step explanation:

we know that

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3 years ago

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Rashid [163]

Answer:

There are 392 students in the seventh grade.

Step-by-step explanation:

Let us assume that there are x number of students in the seventh grade.

Now, 3/8 of the seventh grade students were taking Advanced math at the beginning of the year, but seven dropped out by the end of the year.

So, after the end of the year there were $(\frac{3}{8}x - 7)$ number of students taking advanced math.

So, as per given condition, $(\frac{3}{8}x - 7) = 140$

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3 years ago