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Y_Kistochka [10]
3 years ago
14

Simplify the expression 7h+​(−6.9d​)−14+5d−2.9h

Mathematics
1 answer:
loris [4]3 years ago
6 0

Answer:

-1.9d + 4.1h - 14

Step-by-step explanation:

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Find the surface area of a sphere with a diameter of 30 m. Express your answer in terms of π.
shutvik [7]

Answer:

900π m2

Step-by-step explanation:

surface are of a sphere is 4π(r)^2

now diameter is 30m,so radius will be 15 m

how, 4π(15)^2=900π (m2)

8 0
3 years ago
HELP ASAP WILL MARK BRAINIEST IF YOU ARE RIGHT !Which of the following represents a function?
gregori [183]

Answer:

Option C.

Step-by-step explanation:

This is a function because all of the numbers have a partner, and none of them have more than one.

                                    Example of Not a Function

Function                                Not a Function

-4 to 5                                      <em> -4 to 5</em>                             <

9 to 7                                       <em> -4 to 3    </em>                          <

13 to 3                                       13 to 3                              ^

-7 to 5                                        9 to 7                               ^

                                                 -7 to 5                               ^

                                           Not a Function because of this

8 0
4 years ago
Danny opened a savings account with $50 and depositedn$10 each week for 4 weeks
Romashka [77]

it is 40$$$Answer:

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
¿Cuántos litros de agua se precisa para llenar una piscina inflable de 1/4 de metro cúbico?
8_murik_8 [283]

Answer:

250 litters

Step-by-step explanation:

To solve this question, we first need to know the conversion from cubic meter to liter.

1 cubic meter is equal to 1000 liters.

So, if we have 1/4 cubic meter, we can use a rule of three to find how many liters we will need:

1 m3 -> 1000 L

1/4 m3 -> x L

x * 1 = (1/4) * 1000

x = 1000 / 4 = 250 L

So we need 250 liters of water.

6 0
3 years ago
D^2y/dx^2+4dy/dx-12y=cos2x
rjkz [21]
If you're solving for x, you'd move all the terms containing x to the left side of the equation:

d^2y/dx^2+4y/x-12y-cos^2(x)+sin^2(x)=0

If you're solving for y, you'd simplify both sides of the equation, then isolating the variable:

y=xcos(2x)
3 0
4 years ago
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