3 years ago

Evaluate the expression 7x, if x = 11.

Mathematics

2 answers:

fredd [130]3 years ago

7 0

Answer:

Step-by-step explanation:

7 x 11

you replace x with 11 due to substitution rule

Anuta_ua [19.1K]3 years ago

6 0

Answer:

Step-by-step explanation:

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Andrew [12]

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The figure is net for rectangular prism.

lyudmila [28]

4× (11+5)
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3 years ago

Which graph shows y=x^2+3x-4

Ivahew [28]

Answer:

Third graph in the photo

Step-by-step explanation:

x^2+3x-4 can be factored as (x+4)(x-1). When y=0, x must be -4 or 1 to satisfy the equations, and thus the roots of the graph are at x=-4 and x=1. When x=0, y=(4)(-1)=-4. The only graph that satisfies both of these requirements is the third/last one.

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2 years ago

2. A man drove 240 miles south at the rate of 60 miles per hour. On the return trip, he drove the rate of 40 miles per hour. The

shutvik [7]

$av = \frac{v_{2} - v_{1}}{t_{2} - t_{1}}$

$t_{1} = \frac{d}{v_{1}} = \frac{240}{60} = 4 \: hours \\ t_{2} = \frac{d}{v_{2}} = \frac{240}{40} = 6 \: hours$

$av = \frac{v_{2} - v_{1}}{t_{2} - t_{1}} = \frac{40 - 60}{6 - 4} = \frac{ - 20}{2} = - 10$

$av \: speed= 10 \\ av \: velocity = - 10 \: \: north$

3 0

1 year ago

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1. The rectangle shown is dilated by a scale factor of 2.

stealth61 [152]

Well, I don't what your question is, but I will assume that you want the dimensions of the rectangle after its dilation. So, multiply the dimensions of the rectangle by 2 to make it dilated.

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3 years ago