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bazaltina [42]
2 years ago
15

This morning 45 students showed up to school early. 40% of that showed up did not have a backpack on.How many students did not s

howed up with a backpack on?
Mathematics
2 answers:
Alex787 [66]2 years ago
8 0

Answer:

Step-by-step explanation:

if your dong 40% of 45 t will be 18

sattari [20]2 years ago
4 0

Answer:

18

Step-by-step explanation:

To solve we fist need to figure out what 40% is in decimal form. To do this we have to move the decimal point to the left 2 spaces.

40% -> 0.40

Then we can multiply...

45 · 0.40 = 18  (This means that 40% of the total 45 students is 18).

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The two triangles are similar what is the value of x? <br> x=___
Dennis_Churaev [7]

Answer:

5

Step-by-step explanation:

What we have to know is that when two triangles are similar their sides will always be proportional. So we will create a proportion that goes like this...\frac{\Delta1side}{\Delta1base} =\frac{\Delta2side}{\Delta2base} but since it doesn't tell us the exact value of triangle 1. We will have to add 3 and 12 to get 15 which is the base of the first triangle. Now we're ready to write the proportion.

\frac{4x}{15}=\frac{3x+1}{12}

Now we cross multiply and solve the equation...

48x=15(3x+1)\\48x=45x+15\\3x=15\\x=5

So the value of x is 5.

7 0
3 years ago
6. In the figure below, measure of angle 1 = 3x + 5, measure of angle 2 = 5x - 18, and measure of angle 3 = 7x-2
Lesechka [4]
See photo for solution and mark me as brainliest if i helped :)

A: although it seems like they are forming a 90º angle, they actually add up to a 89 º angle and therefore are not complementary

B: see photo

4 0
3 years ago
What is
netineya [11]

Answer:

2/5

Step-by-step explanation:

The lines are parallel, so they have the same slope.

The red lines has a slope of 2/5

The green line has a slope of 2/5

8 0
3 years ago
Read 2 more answers
The deer population in the united states can be predicted by the expressikn 523(1.099)t where t is the number of years since 199
Brilliant_brown [7]
The predicted population in 1990
4 0
3 years ago
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A circular wading pool has a diameter of 5 feet a circular swimming pool has the radius of 15 feet how many times greater is the
miskamm [114]

Answer:

The swimming pool is 5 times bigger.

Step-by-step explanation:

5 x 3.14=15.7 ft

15 x 2 x 3.14= 78.5 ft

78.5/15.7=5 times bigger

8 0
3 years ago
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