3 years ago

Is the equation a direct variation? -4 + 7 x 4 = 3y

Mathematics

1 answer:

kondor19780726 [428]3 years ago

4 0

Answer:

y=8 is the answer

Step-by-step explanation:

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6. What unknown number makes<br> this equation true?<br> 633 - 23 = 613 -

solniwko [45]

Answer:

633-23=613-3

Just solve for each side then find what makes them equal.

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3 years ago

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To the nearest degree, what is the mean (average) temperature of the data set below

balu736 [363]

Answer:

A. 19°

Step-by-step explanation:

To find the average of something, you add every number in the sequence and then divide it by how many numbers there are.

23 + 17 + 26 + 5 + 33 + 11 = 115

115 / 6 = 19.16666666666667

Round it down and your answer will be 19°.

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3 years ago

The sum of the measures of the interior angles of a convex polygon is 1800 degrees? How many sides does the

AVprozaik [17]

Answer:

12 sides

Step-by-step explanation:

Given

Sum of interior angle = 1800 degrees

Required

Number of sides of the polygon

The sum of interior of a convex polygon is calculated using the following formula:

Sum = (n - 2) * 180

Where n is the number of sides of the polygon.

By substituting 1800 for Sum, we have

$1800 = (n - 2) * 180$

Divide through by 180

$\frac{1800}{180} = \frac{(n - 2) * 180}{180}$

$10 = n - 2$

Add 2 to both sides

$10 + 2 = n - 2 + 2$

$12 = n$

Re order

$n = 12$

Hence, the number of sides of the polygon is 12

6 0

3 years ago

The items Kameko ordered for lunch totaled $5.20. The sales-tax rate was 8%.

katrin2010 [14]

5.20 time 8/100 the answer is0.42 and 0.42plus 5.20

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3 years ago

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Which expression can be used to determine the reference angle for an angle, x, measuing 150 degrees

Sliva [168]

Answer:

see explanation

Step-by-step explanation:

150° is in the second quadrant.

To find the reference angle in the first quadrant subtract from 180°

reference angle = 180° - 150° = 30°

3 0

3 years ago