3 years ago

Find the dimension of a rectangle whose width is 9 miles less than its length and whose area is 90 square miles

Mathematics

1 answer:

valkas [14]3 years ago

3 0

Width is 6 miles and length is 15 miles. 15x6=90 15-6=9

You might be interested in

Help me with this please!

jasenka [17]

Answer:

witch one

Step-by-step explanation:

4 0

3 years ago

Please help me with this question look at the image. I will mark the brainiest.

Vsevolod [243]

Answer:

5 ft

Step-by-step explanation:

The area of a trapezoid is given by the formula ...

A = 1/2(b1 +b2)h

The height is found by solving this equation for h:

2A/(b1 +b2) = h

h = 2(25.5)/(3.2 +7) = 51/10.2 = 5 . . . . fill in the given values

The height of the trapezoid is 5 feet.

7 0

2 years ago

Find the area, in square feet, of a triangle whose base is 42⁄3 feet and whose altitude is 84⁄7 feet. A. 135⁄21 B. 20 C. 40 D. 2

CaHeK987 [17]

Answer:

Option B. $20\ ft^{2}$

Step-by-step explanation:

we know that

The area of a triangle is equal to

$A=\frac{1}{2}bh$

we have

$b=4\frac{2}{3}\ ft$

$h=8\frac{4}{7}\ ft$

Convert mixed numbers to an improper fractions

$b=4\frac{2}{3}\ ft=\frac{4*3+2}{3}=\frac{14}{3}\ ft$

$h=8\frac{4}{7}\ ft=\frac{8*7+4}{7}=\frac{60}{7}\ ft$

substitute the values

$A=\frac{1}{2}(\frac{14}{3})(\frac{60}{7})\\ \\A=\frac{14*60}{2*3*7}\\ \\A=\frac{840}{42} \\ \\A=20\ ft^{2}$

5 0

3 years ago

Read 2 more answers

Sonya and her family went to dinner. The cost of the meal was $47.28. They left a 15% tip. What was the total amount sonyas fami

chubhunter [2.5K]

Answer:

$54.37

Step-by-step explanation:

First, need to find 15% of 47.28.

47.28 x .15 = 7.092

Then we add that to the original cost.

47.28+7.092 = 54.372

Round your answer

$54.37

Hope this helped!

3 0

3 years ago

Which of these represents point-slope form?

dedylja [7]

Answer:

y-y1=m(x-x1)

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers