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8_murik_8 [283]
3 years ago
11

Please answer this I need this ASAP to bring up my grade!!!!!

Mathematics
2 answers:
Alex777 [14]3 years ago
8 0

Answer:

130 miles

Step-by-step explanation:

So, lets go over what we know:

She drove 40 miles per hour for 30 minutes.

Or:

She drove 40 miles per hour for 1/2 hours.

Or:

She drove 20 miles.(40*1/2=20)

We also know:

She drove 55 miles per hour for 2 hours.

Or:

She drove 110 miles(55*2=110)

To find the total miles, we must add the 20 and 110:

110+20

=

130

So she drove a total of 130 miles!

Hope this helps! :D

xz_007 [3.2K]3 years ago
4 0

me a children doctor any g irl have doubt then (gur-xewz-hzb).

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Fill in the blank with a constant, so that the resulting expression can be factored as the product of two linear expressions: 2a
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Answer:

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Step-by-step explanation:

Given

2ab - 6a + 5b + \_

Required

Fill in the gap to produce the product of linear expressions

2ab - 6a + 5b + \_

Split to 2

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Factorize the first bracket

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Represent the _ with X

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Factorize the second bracket

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To result in a linear expression, then the following condition must be satisfied;

b - 3 = b + \frac{X}{5}

Subtract b from both sides

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Multiply both sides by 5

- 3 * 5 = \frac{X}{5} * 5

X = -15

Substitute -15 for X in 2a(b - 3) + 5(b + \frac{X}{5})

2a(b - 3) + 5(b + \frac{-15}{5})

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2a(b - 3) + 5(b - 3)

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The two linear expressions are (2a+ 5) and (b - 3)

Their product will result in 2ab - 6a + 5b - 15

<em>Hence, the constant is -15</em>

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Step-by-step explanation:

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