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Luda [366]
3 years ago
7

What’s -2.5 + 0.4f - 15 - 3 equal?

Mathematics
1 answer:
Alexxx [7]3 years ago
3 0

Answer:

-20.5+0.4

Step-by-step explanation:

add all the like terms :)

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Area of a Circle
Cloud [144]

Answer:

The diameter of the pond is 38 m.

The radius of the pond is 19 m.

The area of the pond is 361 m^2.

Step-by-step explanation:

We know that the circumference C of a circle is equal to

C=\pi D

In this case, C is equal to 120 m.

The diameter is then:

D=C/\pi=120/3.14=38.21\approx 38

Rounded to the nearest whole number, the diameter is D=38 metres.

The radius is equal to half the diameter, so the radius of this pond is R=19 metres.

R=D/2=38/2=19

The area can be calculated from the radius as:

A=r^2=19^2=361

The area is 361 m^2

4 0
2 years ago
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There are 8 dinner rolls in a package.
masha68 [24]

Answer: 25 packages

Step-by-step explanation: 100x2=200 / 200/8=25

5 0
3 years ago
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Solving systems of equations using substitution y=7 3x-3y=-18
oksano4ka [1.4K]

Answer:

x = 1

Step-by-step explanation:

If you have any questions feel free to ask in the comments

5 0
2 years ago
A system of equations is graphed on the coordinate plane.
Nikolay [14]

Answer:

no solutions

Step-by-step explanation:

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Solve for A if ñ=3.14 and r=3.
julsineya [31]

Answer:

28.26

Step-by-step explanation:

The question gives the first three digits of π, which is 3.14, and it gives us the radius, which is 3. So, just substitute them into the formula and you’ll get 3.14(3^2). Solve it and the final answer is 28.26.

Hope this helps! :)

6 0
2 years ago
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