3 years ago

4 Select the correct answer. Which of these mappings is a function?

Mathematics

1 answer:

melomori [17]3 years ago

3 0

Answer:

? i need a better explanation for ur questoin

Step-by-step explanation:

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. If y varies directly with x, and y = -35 and x=7, what is x when y = -85?

sertanlavr [38]

Answer:

x = 17

Step-by-step explanation:

Direct variation is given by

y = kx where k is the constant of variation

-35 = k*7

-35/7 = k

-5 = k

y = -5x

We know y = -85

-85 = -5x

Divide each side by -5

-85/-5 = x

17 =x

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3 years ago

There are 25 students in Ms. Turner's English class, and 5 of them are in the Amazing Apples reading group. What percent of the

lesya692 [45]

Answer:

20%

Step-by-step explanation:

100 divided by 5 is 20

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3 years ago

When planning the new town hall, the architect planned for 50 offices. only 5 will be on the 1st floor. what percentages of offi

babunello [35]

Only 10 percent will be

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3 years ago

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Sarah used 2.5 cups of cheese in a dish that serves 10 people. Amyn used 1.6 cups of cheese in a dish that serves 8 people.

Pavel [41]

Answer: 0.05 cup

Step-by-step explanation:

Divide 2.5 by 10 to find how much is in one of Sarah’s dish.

This gives you 0.25

Divide 1.6 by 8 to find how much is in one of Amyn's dish.

This gives you 0.2

Now minus 0.2 from 0.25.

This gives you 0.05 cup

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3 years ago

What is the GCF of the terms of 3x⁴-9x²-12x?

Alexxx [7]

Answer: The GCF of the terms of $3x^4-9x^2-12x$ is $3x$ .

Step-by-step explanation:

We need to find: GCF(Greatest common factor) of the terms of $3x^4-9x^2-12x$ .

The greatest common factor(GCF) is the greatest factor that divides two expressions.

Here,

$3x^4=3\times x \times x \times x \times x \\9x^2=3\times 3 \times x \times x\\12x=3\times 2 \times 2 \times x$

The greatest common factor of $3x^4-9x^2-12x$ = $3x$

Hence, the GCF of the terms of $3x^4-9x^2-12x$ is $3x$ .

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3 years ago