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il63 [147K]
3 years ago
9

What is a number increased by 15 is 38

Mathematics
1 answer:
snow_lady [41]3 years ago
5 0

Answer:

23

Step-by-step explanation:

Let n be the number

n+15 = 38

Subtract 15 from each side

n+15-15 = 38-15

n =23

The number is 23

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Identify the following polygons with the most specific name. Please she jpg for shapes and choices.
ExtremeBDS [4]

Answer:

isosceles trapezoid

Step-by-step explanation:

honestly not 100% sure but it seems the most specific

5 0
3 years ago
A scientist conducted an experiment. Due to chemical reaction, the temperature of a compound rose 1/10 degree every 1/4 hour for
klio [65]

Answer:

The rate is \frac{2}{5} degree per hour.

Step-by-step explanation:

Given : A scientist conducted an experiment. Due to chemical reaction, the temperature of a compound rose \frac{1}{10} degree every \frac{1}{4} hour for a limited time.

To find : What was the rate, in degrees per hour that the temperature of the compound rose ?

Solution :

In every \frac{1}{4} hour the temperature of a compound rose \frac{1}{10} degree

To get  the rate, in degrees per hour,

In every 1 hour the temperature of a compound rose is

r=\dfrac{\frac{1}{10}}{\frac{1}{4}} degree

r=\dfrac{4}{10} degree/hr

r=\dfrac{2}{5} degree/hr

Therefore, the rate is \frac{2}{5} degree per hour.

5 0
3 years ago
Please help me with this question.
mixas84 [53]

Answer:

B

Step-by-step explanation:

In a triangle, the sum of any two sides must be bigger than the third.

For the first one, 10+20=30 is not greater than 30, so this is not correct.

For B, 122+137 = 259 > 257, 257+137>122  , and 257 + 122 > 137. This works

For C, 8.6 + 2.7 = 11.3 < 12.2, so this does not work

For D, 1/6 + 1/5 = 5/(6*5) + 6/(6*5) = 5/30 + 6/30 = 11/30 < 1/2 = 15/30, so this does not work

7 0
3 years ago
What is the slope of a line that passes through the points (-8, 14) and (4,-4)?
Simora [160]

Answer:

the answer is -3/2

Step-by-step explanation:

Trust me its correct

pls mark me as brainliest

4 0
3 years ago
A cyclist rode 3.75 miles in 0.3 hours.
Archy [21]

Answer:

A. 12.5 miles per hour B. 0.36 hours

Step-by-step explanation:

3.75/.30=12.5 , so divide 3.75 by the time 0.30 hours and you get your miles per hour

next, take 4.5 and divide by the new mph 12.5 from your previous answer.

4.5/12.5=0.36 hours

4 0
3 years ago
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