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rodikova [14]
3 years ago
9

Which expression is equivalent to -4 - 9? A. 4 + 9 B. 4 - 9 C. -4 + (-9) D. -4 + 9

Mathematics
2 answers:
musickatia [10]3 years ago
8 0
Answer: C. -4 + (-9)
ANEK [815]3 years ago
6 0

Answer:

C

Step-by-step explanation:

-4-9= -13

-4 + (-9) = -13

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What was the original price if after increasing by 60% it became $8?
Nesterboy [21]
The answer  is 5a pretty sure
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3 years ago
what is the difference between multiplying fractions and adding/subtracting fractions? complete sentances please
ss7ja [257]

Answer:

See Explanation!

Step-by-step explanation:

When multiplying fractions, you do not need a common denominator, and the entire fraction gets multiplied across, however when adding or subtracting fractions, you must have a common denominator, and then only compute the numerator, as the bases are already the same

7 0
2 years ago
7p2 − 7p = 7p ( ______________)
klio [65]

Answer:

7p(p-1)

Step-by-step explanation:

7p²-7p=7p(p-1)

6 0
3 years ago
Read 2 more answers
Heights (in centimeters) and weights (in kilograms) of 7 supermodels are given below. Find the regression equation, letting the
Delvig [45]
The regression equation:
y = m x + b
m = ( 57 - 50 ) / ( 178 - 168 ) = 7 / 10 = 0.7
50 = 0.7 * 168 + b
50 = 117.6 + b
b = 50 - 117.6
b = - 67.6
y = 0.7 * x - 67.6
The graph is in the attachment.
The weight of supermodel who is 171 cm tall:
y = 0.7 * 171 - 67.6 = 119.7 - 67.6 = 52.1 kg
Download docx
6 0
3 years ago
If we wanted to prove quadrilateral MNOP was a parallelogram, which method below would not work?
rjkz [21]

Answer:

The correct option is 4.

4) Doing two distance formulas to show that adjacent sides are not the same length.

Step-by-step explanation:

Parallelogram is a quadrilateral which has opposite sides equals and parallel. Example of a parallelogram are rhombus, rectangle, square etc.

We can prove that a quadrilateral MNOP is a parallelogram. If we find the slopes of all four sides and compare those of the opposite ends, same slopes would indicate the opposite sides are parallel, hence the quarilateral is a parallelogram. We can also find the distance of two opposing sides, and slopes of twp opposing sides to determine whether it is a parallelogram or not. The most difficult approach is that diagonals bisect each other at same point.

However, using only two distance formulas will not give us enough information to determine whether a side is parallel or not.

7 0
3 years ago
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