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vazorg [7]
3 years ago
10

Pllllllssssss helpooppppp

Mathematics
1 answer:
adell [148]3 years ago
7 0
I am sorry but I don’t know how to do this.
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72 is what percent of 90?
Viktor [21]
It d it is 80 the answer
6 0
3 years ago
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Solve<br> -8x - 3y = -5<br> -2x + 7y = -9
k0ka [10]

Answer:

x = 1

y = - 1

Step-by-step explanation:

-8x - 3y = -5

-2x + 7y = -9  | × (-4)

-8x - 3y = - 5

8x - 28y = 36  +

________________

- 8x + 8x - 3y - 28y = - 5 + 36

- 31y = 31

31y = - 31

y = - 1

- 8x - 3(-1) = - 5

- 8x + 3 = - 5

- 8x = - 8

8x = 8

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6 0
4 years ago
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The Volume () of gas vanes inversely to the pressure (P). The volume of gas is 200 cm ^ 3 under pressure of 32 kg/cm^ 2 What wil
WITCHER [35]

Answer:

0.025 Kg/ cm²

Step-by-step explanation:

if two variables vary inversely, there is a negative relationship between both variables. the increase in one variable leads to a decrease in the other variable

the equation that represents inverse proportion :

y = \frac{b}{x}

where b = constant of proportionality

to determine the answer in this question :

1. determine constant of proportionality

200 = k / 32

k = 6400

2. Determine the amount of pressure using the constant of proportionality

256, 000 = 6400 / pressure

pressure = 6400 / 256, 000 = 0.025

4 0
3 years ago
48/100 in simplest form
Ira Lisetskai [31]
48/100 reduces to 12/25 in simplest form
5 0
4 years ago
Kendra says that 6 x 65 = 390. estimate to check kendras answer is she right explain
Solnce55 [7]
She is right
6x5=30
6x6=36 + 3 = 390
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3 years ago
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