All categories

3 years ago

HELP PLEASE:(

Mathematics

2 answers:

valentina_108 [34]3 years ago

8 0

Answer:

i need more info

Step-by-step explanation:

Pepsi [2]3 years ago

5 0

The length is 4.5ft.
Explanation...
Perimeter= ( L2 + W2 )
we know that the perimeter is 19ft and the width is 5ft.
19= L2 + 5•2
19= L2 + 10
19-10= 9 (L2)
So divide 9 by 2.
4.5
perimeter is 19, length is 4.5 and the width is five.

You might be interested in

2. A coat costs 3 times as much

djverab [1.8K]

135 is the answer because ^ they said it

5 0

3 years ago

A street light is at the top of a 25 ft pole. A 4 ft tall girl walks along a straight path away from the pole with a speed of 6

Burka [1]

Answer:

Tip of the shadow of the girl is moving with a rate of 7.14 feet per sec.

Step-by-step explanation:

Given : In the figure attached, Length of girl EC = 4 ft

Length of street light AB = 25 ft

Girl is moving away from the light with a speed = 6 ft per sec.

To Find : Rate ( $\frac{dw}{dt}$ ) of the tip (D) of the girl's shadow (BD) moving away from th

light.

Solution : Let the distance of the girl from the street light is = x feet

Length of the shadow CD is = y feet

Therefore, $\frac{dx}{dt}=6$ feet per sec. [Given]

In the figure attached, ΔAFE and ΔADE are similar.

By the property of similar triangles,

$\frac{x}{21}=\frac{x+y}{25}$

25x = 21(x + y)

25x = 21x + 21y

25x - 21x = 21y

4x = 21y

y = $\frac{4x}{21}$

Now we take the derivative on both the sides,

$\frac{dy}{dt}=\frac{4}{21}\times \frac{dx}{dt}$

= $\frac{4}{21}\times 6$

= $\frac{8}{7}$

≈ 1.14 ft per sec.

Since w = x + y

Therefore, $\frac{dw}{dt}= \frac{dx}{dt}+\frac{dy}{dt}$

$\frac{dw}{dt}=6+1.14$

= 7.14 ft per sec.

Therefore, tip of the shadow of the girl is moving with a rate of 7.14 feet per sec.

3 0

3 years ago

Identify the polynomial. <br><br> x 3 - y 3 + z

vekshin1

(X 3-y) (3+z)
That's the two polynomials

8 0

3 years ago

Read 2 more answers

You cut off half of a strip of paper.Then you cut off half of the piece that is left.Then you cut off half of the remaining piec

7nadin3 [17]

It goes like this 1/2, 1/4, 1/8. But if your asking about what fraction didn’t get affected than that just zero because the original peace was cut in half.

If that’s not what you mean can you please elaborate to me!

7 0

3 years ago

In What quadrant is the point (-5, -5) located

sineoko [7]

Answer:

Since both values are negative, it can be found in the 3rd quadrant

<em>Feel free to mark this as brainliest :D</em>

4 0

3 years ago