All categories

2 years ago

Which describes the first step in solving the equation 4x - 7 = -15?

Mathematics

1 answer:

GalinKa [24]2 years ago

7 0

Answer:

Add 7 to both sides

Step-by-step explanation:

You would need to add 7 to both sides to cancel out the 7 on the right side of the equation to get x one step closer to being by itself.

Then you would get 4x = -8.

Next divide by 4 on both sides to get x by itself so do the inverse operation of what 4 was doing to x.

x = -2

You might be interested in

The following is an arithmetic sequence. 2, 4, -9, 5 TRUE FALSE

Leno4ka [110]

True or false.. it would be False

8 0

3 years ago

A polynomial that has 5 turning points is multiplied by another polynomial that has 7 zeros. What is the minimum degree of the n

NNADVOKAT [17]

If a polynomial has 5 turning points, then the degree must be at least 6.
If a polynomial has 7 zeros, then the degree must be 7.
The minimum degree of the new polynomial must be 13, or 7 + 6.

4 0

3 years ago

Two-variable linear equations 2x – 5y = 20

Lynna [10]

Y= (2x-20)/ 5 then you replace y so with a simple calculation u get x than u replace x with it value to get y as simple as that

7 0

3 years ago

Long rationalise surds questions pls help

Katena32 [7]

Answer:

Noah mistakenly added 25 and 7 in denominator instead of subtracting in the third step.

Step-by-step explanation:

Noah had to rationalize the denominator of $\frac{32}{5-\sqrt{7}}$

According to him,

$\frac{32}{5-\sqrt{7} = \frac{32(5+\sqrt{7}{(5-\sqrt{7})(5+\sqrt{7}$

Solving the nominator and denominator

$= \frac{160-32\sqrt{7}}{25+5\sqrt{7}-5\sqrt{7}-7}$

Noah did correctly till this point.

In the next step he add 25 and 7 in the denominator, whereas, it should be subtracted.

Hence,

Noah mistakenly added 25 and 7 in denominator instead of subtracting in the third step.

3 0

2 years ago

The minimum monthly payment for Jason's credit card is 2% of his balance or $20, whichever is higher. If Jason's balance at the

Evgen [1.6K]

1510*0.02=$30.20 which is larger than $20.00. 2%= 0.02

4 0

3 years ago