All categories

3 years ago

HAAAAAALLLLLLLPPPPPPPPPP MEEEEEEEEE

Mathematics

1 answer:

vovangra [49]3 years ago

6 0

Answer:

Step-by-step explanation:

plug -20 into x

-20+3y=7

solve

add 20 to both sides

3y=27

y=9

You might be interested in

When asked to write the prime factorization of the number 27 a student wrote 9 . 3. Explain the error and write the correct answ

kondor19780726 [428]

The correct prime factorization of 27 is 3 x 3 x 3

Solution:

Given that,

When asked to write the prime factorization of the number 27 a student wrote 9 . 3

So the student has written,

prime factorization of 27 = 9 . 3

This is wrong

Let us first understand about prime factorization

Prime factorization of a number is any of the prime numbers that can be multiplied to give the original number

A prime number is a whole number greater than 1 whose only factors are 1 and itself.

The first few prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23 and 29

Clearly from above list we can see that 9 is not a prime number

So the correct prime factorization of 27 is:

prime factorization of 27 = 3 x 3 x 3

Here "3" is a prime number

3 0

3 years ago

Find becky's mistake Choose 1

ss7ja [257]

Hi there!

mistake= step 2..

If you can see, the equation is the opposite so this means that to find the answer, your gonna have to add first.. instead of subtracting..

1.Add the terms:

$7+\frac{5}{4}=7\frac{5}{4}$

2.Simplifly the terms:

$7\frac{5}{4}=7\frac{25}{20}$

$\frac{4}{5}=\frac{16}{20}$

3.Subtract the terms:

$7\frac{25}{20}-\frac{16}{20}=7\frac{9}{20}$

Therefore, the mistake was step 2...

3 0

3 years ago

7 √x +4 Is it a polynomial?

Wittaler [7]

Answer:

Phải

Step-by-step explanation:

8 0

3 years ago

Which of the following are solutions to the equation below? (4x - 1)2 = 11

babunello [35]

(4x - 1)2 = 11
(4x - 1) = 22
4x - 1 = 22
4x = 23
x = 5.75

3 0

3 years ago

What is the measure of C

Sav [38]

Answer:

60 degrees

Step-by-step explanation:

Since all sides are equal length, then all three angles are the same. In a triangle, the three angles should add up to 180. So 180 divided by 3 equals 60.

4 0

4 years ago

Read 2 more answers