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Sladkaya [172]
3 years ago
8

A square can be changed into a rectangle by increasing the width by 3 units. Which expression represents the area of the rectang

le in square units? (A) x^2+8x+15 (B) x2+15 (C) 2x +8 (D) 2x+15
Mathematics
1 answer:
hjlf3 years ago
5 0
Letting x be the side-length of the square, the new rectangle has length x and width x+3.  Thus, the area is (x)(x+3)=x^2+3x.  This is not an answer choice.
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Please hurry I will mark you brainliest
const2013 [10]

Answer:

D y=2/3 x +1

  y= -3/2 x+2

Step-by-step explanation:

Perpendicular lines have slopes that multiply to -1

The equations are written in slope intercept form

y = mx+b where m is the slope

A 1/5* 5 = 1  not perpendicular

B 2/3 * 3/2 = 1  not perpendicular

C -1/5 * -5 = 1  not perpendicular

D 2/3 * - 3/2 = -1   perpendicular

4 0
3 years ago
Read 2 more answers
Would you rather drive 0.3 miles to fill up for $3.59 per gallon OR drive 1.2 miles to fill up for $3.41 per gallon?Please expla
Vsevolod [243]
We know that, in the US, the average mile per gallon was 25 mpg in 2015. Since we don't have the mile per gallon of the car in our problem, we are going to use that average.
For our first situation, <span>drive 0.3 miles to fill up for $3.59 per gallon:
</span>\frac{25miles-----\ \textgreater \ 1gallon}{0.3miles-----\ \textgreater \ xgallons}
\frac{25}{0.3} = \frac{1}{x}
x= \frac{(1)(0.3)}{25}
x=0.012
<span>We just proved that in our trip, we used 0.012 gallon, and at $3.59 per gallon; we will pay  (0.012)(3.59)=$0.04 for that gasoline.

For our second situation, </span><span>drive 1.2 miles to fill up for $3.41 per gallon:
</span>\frac{25miles-----\ \textgreater \ 1gallon}{1.2miles-----\ \textgreater \ xgallons}
\frac{25}{1.2} = \frac{1}{x}
x= \frac{(1)(1.2)}{25}
x=0.048
We just proved that in our trip, we used 0.048 gallon, and at $3.41 per gallon; we will pay  (0.048)(3.41)=$0.16 for that gasoline.

We can conclude that is much better to drive 0.3 miles to fill up for $3.59 per gallon than drive <span>1.2 miles to fill up for $3.41 per gallon.</span>
8 0
3 years ago
Please help! The girls' gym teacher needs to purchase
hram777 [196]
Well the teacher would only get $15 but we don’t know how much the balls cost so you can’t make an expression
5 0
3 years ago
Factor completely 4u^2-28u+49
icang [17]

\bold{Answer}

\boxed{\bold{\left(2u-7\right)^2}}

\bold{Explanation}

  • \bold{Factor: \ 4u^2-28u+49}

\bold{---------------------}

  • \bold{Rewrite \ 4u^2-28u+49: \ \left(2u\right)^2-2\cdot \:2u\cdot \:7+7^2}

\bold{\left(2u\right)^2-2\cdot \:2u\cdot \:7+7^2}

  • \bold{Apply \ Perfect \ Square \ Formula \ \left(a-b\right)^2=a^2-2ab+b^2: \ a=2u,\:b=7}

\bold{\left(2u-7\right)^2}

\boxed{\bold{Eclipsed}}

3 0
3 years ago
Read 2 more answers
Please simplify this fraction
saw5 [17]
I hope this helps you

6 0
3 years ago
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