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NeX [460]
3 years ago
5

4x + 7 = 23 solve for x plz show work

Mathematics
1 answer:
choli [55]3 years ago
4 0
4x+7 = 23

4x = 16

x = \tfrac{16}{4}

x=4
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Will mark brainlyest!!
butalik [34]

Answer:

A = 120 cm^2

Step-by-step explanation:

The formula for surface area of a rectangular prism is:

A = 2(area of the top) + 2(area of the front) + 2(area of one side)

Substituting the values:

A = 2(20) + 2(16) + 2(24)

First, distributing:

A = 40 + 32 + 48

Then adding, giving your final answer

A = 120 cm^2

Hope this helps you :)

6 0
2 years ago
Victoria has $2.90 in quarters, dimes and nickels. The numbers of nickels is one more than six times the number of quarters, and
maria [59]

Answer:

Step-by-step explanation:

She has 290 cents.

Nickels: 6x+1

Quarters: x

Dimes: 4x

Now that we've converted it algebraically, we can add them

6x+1 + x + 4x = 11x+1 = 290

11x = 289

x = 289/11

let me know if incorrect, i will fix

8 0
3 years ago
PLEASEEEE
belka [17]

Answer:

The answer to your questions is: 25 new teachers

Step-by-step explanation:

Data

# of students = 2000

ratio = 3:80 teachers to students

New teachers = ?

Process

I suggest to use rule of three to solve this problem

                     3 teachers ----------------  80 students

                      x                ----------------  2000 students

                  x = (2000 x 3) / 80 = 75 teachers

               Number of initial teachers = 75

The ratio change to 1:20

                     1 teacher -------------------  20 students

                     x             -------------------   2000 students

                     x = (2000 x 1) / 20

                    x = 100 teachers

Number of new teachers = 100 - 75 = 25

3 0
4 years ago
Your friend is 1.2 times taller than you. Your friend is 64.5 inches tall. How tall are you?
krok68 [10]
You have to divide your friends weigh by 1.2 to get  the result. : if you were 1.2 times taller than they, you would multiply, so the oppisite is dividing!

so  it will be 64.5/1.2=53.75.


6 0
3 years ago
Read 2 more answers
Which choice shows the image of triangle ABC after a reflection over the y-axis followed by a rotation of 180° around the origin
vaieri [72.5K]

Answer: the second one

Step-by-step explanation:

The first one is reflection over the x-axis, rotated, and translated. The third one is rotated 90 degrees

6 0
3 years ago
Read 2 more answers
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