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3 years ago

Mathematics

2 answers:

Misha Larkins [42]3 years ago

8 0

Answer:

It's 130.66, D

Step-by-step explanation:

:)) yw

adoni [48]3 years ago

8 0

Answer:

C. 130.66

Step-by-step explanation:

I just took the assesment and i got it right

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The length of a rectangle is 16 feet more than three times the width. The perimeter of the rectangle is 248 feet. Find the dimen

sattari [20]

Answer:

L = 97, w = 27

Step-by-step explanation:

The perimeter formula is P = 2L + 2w. We have too many unknowns simply to plug in, so we have to find a way to identify one in terms of the other. The statement is that the length is 16 feet more than 3 times the width, so the length is in terms of the width and can be identified as

L = 3w + 16

and the width, then, is just w. Now we can fill in those 2 values, both in terms of w, and set it to equal the perimeter value we were given of 248:

2(3w + 16) + 2w = 248 and

6w + 32 + 2w = 248 and

8w + 32 = 248 and

8w = 216 so

w = 27

That means that the width is 27. Use that value of w now to find the length where

L = 3w + 16.

L = 3(27) + 16 and

L = 97

6 0

4 years ago

A trapezoid has an area of 342 square yards. The length of one base is 17 yards, and the length of the other base is 21 yards. W

dedylja [7]

The height of trapezoid is 18 yards

Solution:

Given that, trapezoid has an area of 342 square yards

The length of one base is 17 yards, and the length of the other base is 21 yards

To find: height of trapezoid

The area of trapezoid is given by formula:

$area = \frac{a+b}{2} \times h$

Where "h" is the height

"a" and "b" are the length of base

Here given that,

area = 342 square yards

a = 17 yards

b = 21 yards

h = ?

Substituting the values we get,

$342 = \frac{17+21}{2} \times h\\\\342 \times 2 = 38 \times h\\\\ 684 = 38h\\\\h = \frac{684}{38}\\\\h = 18$

Thus height of trapezoid is 18 yards

6 0

3 years ago

Which ordered pair is a solution to the system of equations? Use any method to solve. 4x-y=5, x+y=10

fomenos

Answer:

The ordered pair ( 5, 15) is a solution to the system of given equations.

Step-by-step explanation:

Consider the given equations,

4x-y=5 .......(1)

x+y=10 .......(2)

We have to find the ordered pair which is a solution to the system of given equations.

We solve the system by elimination method,

Adding both equation , to eliminate y ,

⇒ 4x - y +( x+y ) = 5+ 10

⇒ 4x - y + x + y = 15

⇒ 5x = 15

⇒ x = 5

Put x = 5 in equation (1) , and solve for y,

We get,

4x - y = 5 ⇒ 4(5) - y = 5 ⇒ y = 20 - 5 ⇒ y = 15

Thus, the ordered pair ( 5, 15) is a solution to the system of given equations.

8 0

3 years ago

Read 2 more answers

In finding the solution of the equation 5-3x=2x+9, 3x is added to both sides of the equation first. Which of the following shoul

Semmy [17]

Answer:

A add -9

Step-by-step explanation:

After this you should add -9 to bring it over to the left side.

7 0

3 years ago

A cell phone tower casts a shadow 15 feet long at the same time that a 100-foot building casts a shadow 60 feet long. How tall i

aivan3 [116]

Answer:

27 feet tall

Step-by-step explanation:

100/60

10/6

4 0

3 years ago