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ExtremeBDS [4]
3 years ago
12

PLEASE HELP!! Fr do anything

Mathematics
1 answer:
Eduardwww [97]3 years ago
7 0

Answer:

1)=38 /// 2)=116 /// 3)=102 /// 4)=41

Step-by-step explanation:

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Suppose y varies inversely with x, and y = 25 when x = 1/5. What is the value of y when x = 5 ?
34kurt

Answer:

y = 1

Step-by-step explanation:

Given that y varies inversely with x then the equation relating them is

y = \frac{k}{x} ← k is the constant of variation

To find k use the condition y = 25 when x = \frac{1}{5} , then

25 = \frac{k}{\frac{1}{5} } = 5k ( divide both sides by 5 )

5 = k

y = \frac{5}{x} ← equation of variation

When x = 5, then

y = \frac{5}{5} = 1

8 0
3 years ago
Solve the system of equations. y = 2x y = x 2 – 15
inn [45]

Answer:

D. (–3, –6) and (5, 10)

Step-by-step explanation:

The system has equations:

y=2x...(1)

and

y=x^2-15...(2)

Equate both equations;

x^2-15=2x

Rewrite in standard form:

x^2-2x-15=0

We factor to obtain:

(x+3)(x-5)=0

By the zero product principle;

(x+3)=0,(x-5)=0

\implies x=-3,x=5

When x=-3, y=2(-3)=-6

This yields the ordered pair (-3,-6).

When x=5, y=2(5)=10

This yields the ordered pair (5,10).

The correct choice is D.

8 0
3 years ago
2x+y=4 <br> -2x+y=-4 <br> Answer for this equations and inequalities problem please
Elena-2011 [213]

Answer:

(2,0); x = 2; y= 0

Step-by-step explanation:

add the system and u get y = 0. substitute in the first equation and u get x = 2

8 0
3 years ago
Anton has a deck that is 890 cm by 2891 cm. If he wants to add 66 cm. how large would his deck be?
Aliun [14]

Answer:

The answer is 2,763,796 cm². Or 276.3796m², which is the footprint of a nice size house.

Step-by-step explanation:

890cm \times 2891cm = 2572990 {cm}^{2}

890 + 66 = 956

956cm \times 2891cm = 2763796 {cm}^{2}

4 0
3 years ago
HELP PLZ I NEED IT
vladimir2022 [97]

Answer:

false

Step-by-step explanation:

18 is not = to 21

3 0
3 years ago
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