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natali 33 [55]
3 years ago
8

50 POINTS!! EASY!

Mathematics
2 answers:
ioda3 years ago
5 0

Answer:

-16 & 40

Step-by-step explanation:

When x = 8

y = -2 × 8

y = -16

When y = -20

x = -2 × -20

x = 40

frosja888 [35]3 years ago
3 0

9514 1404 393

Answer:

  • y = -16
  • x = 10

Step-by-step explanation:

The direct proportion equation is ...

  y = kx

where k is the constant of proportionality. Here, you're told k=-2, so the equation is ...

  y = -2x

For x=8, the value of y is ...

  y = -2(8) = -16 . . . . . do the multiplication

For y = -20, the value of x is ...

  -20 = -2x

  10 = x . . . . . . . . . divide both sides by -2

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Consider the following 8 numbers, where one labelled
Maslowich

Answer:

-21 and 63 are the possible values

8 0
3 years ago
A circle's radius that has an initial radius of 0 cm is increasing at a constant rate of 5 cm per second.
djyliett [7]

Answer:

a) r(t)=5t

b) A=\pi\cdot r^2

c) A=\pi\cdot (5t)^2

d) A=25\pi  t^2

Step-by-step explanation:

We know that the circle is increasing its radio from an initial state of r=0 cm, at a rate of 5 cm/s.

This can be expressed as:

r(0)=0\\\\dr/dt=5\\\\r(t)=r(0)+dr/dt\cdot t=0+5t\\\\r(t)=5t

a) Radius of the circle, r (in cm), in terms of the number of seconds, t since the circle started growing:

r(t)=5t

b) Area of the circle, A (in square cm), in terms of the circle's radius, r (in cm):

A=\pi\cdot r^2

c) Circle's area, A (in square cm), in terms of the number of seconds, t, since the circle started growing:

A=\pi\cdot r^2\\\\A=\pi\cdot (5t)^2

d) Expanded form for the area A:

A=\pi\cdot (5t)^2=25\pi\cdot t^2

3 0
3 years ago
How can 100 be divided by 5
ValentinkaMS [17]
By 20 because 20 x 5 is 100
7 0
4 years ago
Read 2 more answers
drag each tile to the correct box. not all tiles will be used. Identify the functions that are continuous on the set of real num
vaieri [72.5K]

Answer: hello your question is incomplete attached below is the complete question

Answer : g(x),  j(x),  k(x), f(x), m(x), h(x)

Step-by-step explanation:

The Arrangement of the functions in ascending order ( i.e. starting from the least to the Highest ) is based on the definition of the denominator for all the real values of x and the continuation of the function on the set of real numbers.

when resolving the given functions input the value of x = 5 into the given function to determine the above conditions

g(x) ; has its denominator defined for all real values of x , hence the function g(x) is continuous on the set of real numbers

6 0
3 years ago
Eight more than the quotient of thirty and a number is fourteen.
vaieri [72.5K]

Answer:

The number is 5

Step-by-step explanation:

First, we turn words into an equation(using x as the unknown number). Then, we solve for x.

\frac{30}{x} +8=14\\\frac{30}{x}=6\\30=6x\\5=x

4 0
3 years ago
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