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kozerog [31]
2 years ago
12

Which expression is equivalent to 4 − (−7)? A 7 + 4 B 4 − 7 C −7 − 4 D −4 + 7

Mathematics
2 answers:
jeyben [28]2 years ago
6 0

Answer:

A.7+4

Step-by-step explanation:

4-(-7)

b/c negative times negative is postive

-(-)=+

-(+)= -

+(+)=+

hope it's helpful

THANK YOU.

ELEN [110]2 years ago
3 0

Answer:

7+4

Step-by-step explanation:

When you are subtracting a negative, you are really adding the number. For example, four minus negative seven is equal to four plus seven.  

4 - (-7) = 4+7

4+7 = 7+4 (By the commutive property of addition)

Let me know if this helps!

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The graph shows the relationship between hours worked and total earnings for a store clerk. Let h represent hours worked and e r
Dovator [93]

Answer:

The answer is C.

Step-by-step explanation:

y = kx → e =

30

4

h → e = 7.5h

The independent variable is hours worked, h, and the dependent variable is total earnings, e. The independent variable is the input value of a function. The dependent variable is the output value of a function.

8 0
3 years ago
Simplify 8a-5b-(6a-9b)
pychu [463]

Answer:

<h2>2(a + 2b)</h2>

Step-by-step explanation:

8a - 5b - (6a - 9b)

When there is a (-) in front of an expression in parentheses, change the sign of each term in the expression.

8a - 5b - 6a + 9b

Collect like terms

2a + 4b

Factor out 2 from the expression

2(a + 2b)

Hope this helps...

Good luck on your assignment..

7 0
3 years ago
What is the product of 2r2 - 5 and 3r
faust18 [17]

Answer: 6r^3 - 15r

Step-by-step explanation:

(3r) (2r^2 - 5)

Distribute.

6r^3 - 15r

Hope this helped.

8 0
3 years ago
Evaluate the given numerical expression <br> (5+7 to the 3rd power divided by 7 times 7
-BARSIC- [3]

{(5 + 7)}^{3}  \div 7 \times 7 \\  {12}^{3}  \div 7 \times 7 \\ 1728 \div 7 \times 7 \\ 1728

8 0
3 years ago
There may be multiple answers here. please help
gogolik [260]
I'm not positive I know the answer, but I have a feeling that because it's asking that you select all that apply, there is more than just one answer.

x + 3 = 0
-3 + 3 = 0

So yeah, just basically solve them as individual problems. Just do additive inverse for each expression.
6 0
4 years ago
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