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serious [3.7K]
3 years ago
15

Simplify the given expression below: (4 + 21) – (1 – 71)

Mathematics
2 answers:
zzz [600]3 years ago
5 0

Answer:

-45

Step-by-step explanation:

PEMDAS

First, parenthesis:

4 + 21 = 25

1 - 71 = 7

Then Subtraction:

25 - 70 = -45

djyliett [7]3 years ago
5 0

Hey there!

(4 + 21) - (1 - 71)

4 + 21 = 25

= 25 - (1 - 71)

1 - 71 = -70

= 25 - (-70)

= 25 + 70

= 95

Answer: 95

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

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6 0
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What is the sum of two numbers a and b decreased by their product?
natka813 [3]

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8 0
3 years ago
Read 2 more answers
A line segment has endpoints A(4, 8) and B(2, 10). The point M is the midpoint of AB. What is an equation of a line perpendicula
Vera_Pavlovna [14]
I)

The Midpoint M of the line segment AB is found using the Midpoint formula:

M=( \frac{4+2}{2} , \frac{8+10}{2})=(3, 9)

ii)

the slope of the line through A and B is found by the slope formula:

m= \frac{y_1-y_2}{x_2-x_1}= \frac{10-8}{2-4}= \frac{2}{-2}=-1

iii)

the product of the slopes of 2 perpendicular lines is -1, so the slope of the line perpendicular to the line through A and B is -1/(-1)=1

iv) 

the equation of the line with slope 1, which contains point M(3, 9) is found by the slope point form equation of a line:

y-9=1(x-3)

y-9=x-3

y=x+6


Answer: y=x+6

7 0
3 years ago
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