3 years ago

Help me please quickly

Mathematics

1 answer:

Nostrana [21]3 years ago

3 0

i think the answer is D

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Y and x have a proportional relationship, and y=12 when x=8. What is the value of x when y=18?

Bond [772]

Answer:

x = 12

Step-by-step explanation:

Proportional relationship means that $\frac{y}{x}$ = k(a constant)

Here, k = 12/8 = 3/2

So, the equation is $\frac{y}{x}$ = 3/2.

Plug in y = 18, and we get 18/x = 3/2.

18 = 3/2x

x = 12

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4 years ago

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Look at the sequence : 5, -10, 20, -40, 80

Sphinxa [80]

Answer:

5 (5x1) , -10 -(5x2), 20(10x2), -40 -(20x2), 80(40x2)

so the next number should be previous number in the sequence multiplied by 2 and a negative sign.

-`(80x2) = -160

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4 years ago

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yKpoI14uk [10]

Answer:

<5 is the remote interior angle to <1

They are on the same line, or, they are supplementary, and will add up to 180 degrees

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3 years ago

45% of all 1st graders at Sierra Elementary School are female students. This year there are 54 female 1st graders at Sierra Elem

Anit [1.1K]

Answer:

There are 120 1st graders at Sierra Elementary School this year

Step-by-step explanation:

Let n represent the total number of 1st graders at Sierra Elementary School

Since 45% of all 1st graders at Sierra Elementary School are female students and this year there are 54 female 1st graders, 45% of n is equal to 54

→ n( $\frac{45}{100}$ ) = 54

→ 45n = 5400

→ n = 120

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3 years ago

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Find the indicated complement. A certain group of women has a 0.12% rate of red/green color blindness. If a woman is randomly

Galina-37 [17]

Answer:

the probability will be 0.

Step-by-step explanation:

0.12%= 0.0012= 3/2500.

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4 years ago