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4 years ago

PLEASE HELP! WILL MARK BRANLIEST

Mathematics

1 answer:

11111nata11111 [884]4 years ago

5 0

Answer:

13=x

Step-by-step explanation:

101=7x+10

-10 -10

7 7

13=x

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A rectangular garden hasblengtg and width as given by thr expression below length 4-7(3x+4y) eifth 3x(-2y) write a simplifird ex

Dima020 [189]

Perimeter of a rectangle = 2(l+w)
Length = 4-7(3x+4y)
=4-21x-28y
Width = 3x(-2y)
=-6xy
Perimeter
=2(4-21x-28y-6xy)
Answer = 8-42x-56y-12xy

8 0

3 years ago

Tamera spent ¼ of her school budget on notebooks. If she had a budget of $60.00, how much will she have left to spend?

Dominik [7]

<h3>multiply 60 by 1/4 to get the amount spent on notebooks</h3>

<h3>next subtract 60 by 15 to get the amount Tamera has to spend for her other school supplies</h3>

<h3>your answer should be $ 45.00</h3>

hope that helps and plss let me know if you have any related questions :))

5 0

3 years ago

Zoom in to see question.

elena55 [62]

Answer:

Step-by-step explanation:

because it is promotional

6 0

3 years ago

Read 2 more answers

Gwen has $20, $10, and $5 bills in her purse worth a total of $220. She has 15 bills in all. There are 3 more $20 bills than the

klio [65]

Answer:

x = 8 ( 20$ bills)

y = 5 ( 10 $ bills)

z = 2 ( 5 $ bills)

Step-by-step explanation:

Let call x, y, and z the number of bill of 20, 10, and 5 $ respectively

then according to problem statement, we can write

20*x + 10*y + 5*z = 220 (1)

We also know the total number of bills (15), then

x + y + z = 15 (2)

And that quantity of 20 $ bill is equal to

x = 3 + y (3)

Now we got a three equation system we have to solve for x, y, and z for which we can use any valid procedure.

As x = 3 + y by substitution in equation (2) and (1)

( 3 + y ) + y + z = 15 ⇒ 3 + 2*y + z = 15 ⇒ 2*y + z = 12

20* ( 3 + y ) + 10*y + 5*z = 220 ⇒ 60 + 20*y + 10*y + 5*z = 220

30*y + 5*z = 160 (a)

Now we have only 2 equations

2*y + z = 12 ⇒ z = 12 - 2*y

30*y + 5*z = 160 30*y + 5* ( 12 - 2*y) = 160

30*y + 60 - 10*y = 160

20*y = 100

y = 100/20 y = 5 Then by substitution in (a)

30*y + 5*z = 160

30*5 + 5*z = 160

150 + 5*z = 160 ⇒ 5*z = 10 z = 10/5 z = 2

And x

x + y + z = 15

x + 5 + 2 = 15

x = 8

4 0

3 years ago

Read 2 more answers

The length of time it takes college students to find a parking spot in the library parking lot follows a normal distribution wit

Fynjy0 [20]

Answer:

0.7745

Step-by-step explanation:

Given that the length of time it takes college students to find a parking spot in the library parking lot follows a normal distribution with a mean of 3.5 minutes and a standard deviation of 1 minute.

X, the length of time is N(3.5, 1)

The probability that a randomly selected college student will take between 2 and 4.5 minutes to find a parking spot in the library lot.

= $P(2$ where F represents the cumulative probability upto that value

$0.8413-0.0668\\=0.7745$

Answer is 0.7745

3 0

4 years ago