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3 years ago

I need 2 expressions that are equal to 30m+15 when you solve them! Please be quick!

Mathematics

1 answer:

seropon [69]3 years ago

3 0

Answer:

$30m + 15 = 3(10m + 5)\\$

$30m + 15 = 5(6m+3)$

Step-by-step explanation:

Given

$30m + 15$

Required

Equivalent expressions

We have:

$30m + 15$

Factor out 3

$30m + 15 = 3(10m + 5)$

Also:

$30m + 15$

Factor out 3

$30m + 15 = 5(6m+3)$

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You mow the lawn to earn your allowance. Each time you mow the lawn you earn \$12$12dollar sign, 12. Write an equation for the n

horrorfan [7]

For this case, the first thing we must do is define variables.
m: number of times you cut the grass
d: amount of dollars you earn.
We now write the linear equation that models the problem:
d = 12m
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Answer:
an equation for the number of dollars, d, you earn when you mow the lawn m times is:
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6 0

3 years ago

A robot moving forward at a constant speed takes 2.5 hours to travel 1 kilometer. Moving forward at this same constant speed, it

makvit [3.9K]

Answer:

The length of the hallway is 10 m.

Step-by-step explanation:

Given:

Time taken to cover 1 km = 2.5 hours

Distance covered in 2.5 hours = 1 km

Therefore, speed of robot = $\frac{\textrm{Distance}}{\textrm{TIme}}=\frac{1}{2.5}=0.4\ km/h$

Now, speed is constant.

Now, time taken to cover the length of hallway = 90 s

Speed of the robot = 0.4 km/h

Converting 0.4 km/h to m/s, we multiply by the factor $\frac{5}{18}$ . This gives,

$0.4\times \frac{5}{18}=\frac{1}{9}\ m/s$

Now, distance of the hallway is equal to the product of speed and time. So,

Distance of hallway = Speed $\times$ Time

Distance of hallway = $\frac{1}{9}\times 90=\frac{90}{9}=10\ m$

Therefore, the length of the hallway is 10 m.

5 0

3 years ago

The post office is now calculating the volume of packages to determine the shipping cost. If a box measure 8 1/2 inches long, 5

sladkih [1.3K]

Answer:
volume of box = 312.375 in²

Explanation:
The volume of a rectangular box can be measured as follows:
volume = length* width * height

From the givens we have:
length = 8.5 in
width = 5.25 in
height = 7 in

Substitute with the givens in the above equation to get the volume as follows:
volume = length * width * height
volume = 8.5 * 5.25 * 7
volume = 312.375 in²

Hope this helps :)

3 0

3 years ago

ANSWER THIS FOR ALL MY POINTS, ALSO BRAINLIEST

kolbaska11 [484]

Answer:

≈8.59 to 8.6 cm

6 0

2 years ago

Help asapppppppppp!!!!!!!!

Illusion [34]

Answer:

Step-by-step explanation:

Answers only, no estimates:

1.) 15/32

2.) 2

3.) 32

7 0

4 years ago