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Oksi-84 [34.3K]
3 years ago
7

1. 40-(-40)+(5x4) i need to know this for my online classes to pass

Mathematics
2 answers:
postnew [5]3 years ago
7 0

Answer:

5x4+80

Step-by-step explanation:

Butoxors [25]3 years ago
7 0

Answer:

100

Step-by-step explanation:

You have to use the order of operation (PEMDAS) Paranthesis, Exponents, Multiplication, Division, Addtion, and Subtraction to solve this problem.

First, multiply 5 and 4 to get 20 since it's between paranthesis and get

40-(-40)+20

Then, add 40 and 40 as two negatives becomes a positive.  You should get

80+20

Finally, add 20 to 80 and get 100!

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In the diagram below, the radii of the two concentric circles are 3 centimeters and 7 centimeters, respectively.
True [87]

Answer:

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Step-by-step explanation:

Area of the shaded region = area of larger circle - area of the smaller circle

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Area of smaller circle = 3.14*3² = 3.14*9 = 28.26 cm²

Area of larger circle = πr²

π = 3.14, r = 7

Area of larger circle = 3.14*7² = 3.14*49 = 153.86 cm²

Area of the shaded region = 153.86 - 28.26 = 125.6 cm²

5 0
3 years ago
In STU, SU =18 and TU =13. Find m
erastova [34]

Answer:

m=22.2

Step-by-step explanation:

By using the Pythagorean’s theorem i.e

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Adjacent =13

Hyp^2=18^2+13^2

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3 0
3 years ago
Why wasn't i doing this sooner :)
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Step-by-step explanation:

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Tristan and two of his friends purchased tickets to a school play. Tristan paid for all the tickets with a $50.00 bill and recei
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Step-by-step explanation:

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3 years ago
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Which is the graph of the linear inequality y<3x+1​
Varvara68 [4.7K]

Answer:

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