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3 years ago

20 points+Will give brilliant:

Mathematics

1 answer:

creativ13 [48]3 years ago

4 0

1. No
2. Yes
3. Yes
4. No

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13+2(4s-3) = -1 what does s equal

Luda [366]

Answer:

s=-1

Step-by-step explanation:

13+8s-6=-1

7+8s=-1

-7

8s=-8/8

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3 years ago

What is the value of c? A.34 B.68 C.38 D.71

andreyandreev [35.5K]

Answer:

gtfcxadx

Step-by-step explanation:

fdcvc dxz

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4 years ago

Helppp I really don't understand full explanation would be nice, please.

Dafna1 [17]

Step-by-step explanation:

y = mx + b.

y = -5/x -5

I hope this helps,

8 0

3 years ago

A gift box in the shape of a rectangular prism has 20-inch length, 14-inch width, and 10-inch height. How much paper will you ne

Marizza181 [45]

Answer:

1240 in²

Step-by-step explanation:

Total surface area:

S = 2(lw + lh + wh)
S = 2(20*14+20*10+14*10) = 1240 in²

5 0

3 years ago

a cookie baker has an automatic mixer that turns out a sheet of dough in the shape of a square 12 inches wide. His cookie cutter

iragen [17]

Answer:

All the sizes that satisfy $kd^2 =144$

Step-by-step explanation:

To answer this question we first need to find the minimum wasted area of the dough.

Let us call the diameter of the cookie $d$ , and $a$ the length of the dough sheet, then the $n$ number of cookies that fit into length $a$ will be

$n = \dfrac{a}{d}$

and therefore, the number that will fit into the whole square sheet will be

$n^2 = \dfrac{a^2}{d^2}$

Since the area of each cookie is

$A = \pi \frac{d^2}{4}$

the area of n^2 cookies will be

$A_n = n^2\pi \frac{d^2}{4}$ ,

which is the area of all the cookies cut out from the dough sheet; therefore, after the cutting, the area left will be

(1). $\text{area left}= a^2-n^2\pi \frac{d^2}{4}$

putting in the value of $n^2$ we get

$a^2- \dfrac{a^2}{d^2}\pi \frac{d^2}{4}$

which simplifies to

area left = a^2( 1 - (π/4))

putting in a = 12 we get

area left = 30.902 in^2.

Going back to equation (1) we find that

a^2-n^2(πd^2/4) =30.902

12^2- n^2(πd^2/4) =30.902

and if we call k = n^2, we get

12^2- k(πd^2/4) =30.902

113.098 = k(πd^2/4)

simplifiying this gives

kd^2 = 144.

As a reminder, k here is the number of cookies cut from the dough sheet.

Hence, our cookie diameter must satisfy kd^2 = 144, meaning larger the diameter of the cookies less of the should you cut out to satisfy the above equality.

8 0

4 years ago