3 years ago

Write a word phrase for and algebraic expression 3x+10

Mathematics

1 answer:

exis [7]3 years ago

8 0

Three multiplied by a number plus ten.

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One-half (1/2) hour equals______________.

ozzi

1 hour = 60 minutes = 3600 seconds = 1/24 day

Divide every number above by 2 to get 1/2 hour and its equivalent numbers.

1/2 hour = 30 minutes = 1800 seconds = 1/12 day

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I need help with number 4!

lesya692 [45]

Answer:

x = -8, y = 6

Step-by-step explanation:

x + 2y = 4 ------(1)

x + y = - 2

y = - x - 2 ----------(2)

Substitute y in (1)

x + 2(- x - 2) = 4

x - 2x - 4 = 4

- x = 4 + 4

x = -8

Substitute x in (2)

y = - (- 8) - 2 = 8 - 2 = 6

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Carla paid $129 plus 6% sales tax for a guitar. What

Nesterboy [21]

Answer:

136.74

Step-by-step explanation:

6 percent of $129 is $7.74

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2 years ago

How do we use inclined planes? give an example<br><br>How is a wedge related to a inclined plane?

mixer [17]

You use inclined planes by putting an object on something and push it down like a ramp.

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3 years ago

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Find the area of each triangle.

lord [1]

Hi there!

We can find the area of a triangle with the formula:
$area = 0.5 \times base \times height$

Filling in this formula gives us the following answers.

Triangle 1
$area = 0.5 \times 5 \times 8 = 20$

Triangle 2
$area = 0.5 \times 7 \times 9 = 31.5$

Triangle 3
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