2 years ago

Which of the following expressions is equivalent to 18x + 30y?

Mathematics

1 answer:

uranmaximum [27]2 years ago

4 0

Answer:

B) 6(3x + 5y)

Step-by-step explanation:

6 times 3 is 18 and 6 times 5 is 30

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Solve for x: 2 over 3 equals 8 over quantity x plus 6

SashulF [63]

Answer:

x = 40/3

Step-by-step explanation:

2/3 = (8/x) + 6

-6 -6

2/3 - 6 = -16/3

-16/3 = 8/x

*x *x

(-16/3)x = 8

+16/3 +16/3

x = 40/3

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3 years ago

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Choose the correct proportions. 4, 1, 2, 2 a) 1:2 = 2:4 b) 1:4 = 2:2

Grace [21]

Answer:

Step-by-step explanation:

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3 years ago

Help me with this math question

murzikaleks [220]

Answer: A. In 2015 there will be more seagulls than chickadees.

Step-by-step explanation: if you look at the chart you can see the seagull population keeps growing and the chickadee population keeps decreasing.

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3 years ago

the ratio of the weight of an object on earth to the weight of the same object on pluto is 100 to 3. if and elephants weighs 410

Over [174]

You mean find the elephant's weight on Pluto?

100:3 & 4100:x

4100/100 = 41
3*41 = 123

The ratio would become 4100:123 with the elephant's weight on Pluto as 123 pounds.

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3 years ago

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ZA Round your answer to the nearest hundredth.

Ahat [919]

Answer:

A = 48.81°

Step-by-step explanation:

Angles in a Right Triangle

When the side lengths of a right triangle are known and an angle must be determined, we can use the trigonometric ratios that relate angles and sides.

The tangent ratio is defined as:

$\displaystyle \tan A=\frac{\text{opposite leg}}{\text{adjacent leg}}$

Opposite leg to angle A is 8 and adjacent leg is 7, thus:

$\displaystyle \tan A=\frac{8}{7}$

Using the inverse tangent funcion:

$\displaystyle A=\arctan\frac{8}{7}$

Calculating:

A = 48.81°

5 0

2 years ago