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Gekata [30.6K]
3 years ago
9

What is 13+7x=27 pleae i really need help

Mathematics
1 answer:
jek_recluse [69]3 years ago
6 0

Answer:

x=2 is the answer to this problem

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What is the average acceleration of a southbound train that slows down from 15 m/s to 8.6 m/s in 1.2 s?
horrorfan [7]

Answer:

The average acceleration of train is 5.34\ m/s^2

Step-by-step explanation:

We have,

A train that slows down from 15 m/s to 8.6 m/s in 1.2 s. It means that 15 m/s is its initial velocity and 8.6 m/s is its final velocity.

It is required to find the average acceleration of the train.

a=\dfrac{v-u}{t}\\\\a=\dfrac{(8.6-15)\ m/s}{1.2\ s}\\\\a=-5.34\ m/s^2

The average acceleration of train is 5.34\ m/s^2.  Negative signs shows that the train is decelerating.

5 0
3 years ago
If the product of the extremes is 8,then the geometric mean is. A) 2. B) 2√2. C) 4
Rainbow [258]

if,

p/x=x/q

then cross-multiplying gives <span>x^2=pq</span>

<span>x^2=pq</span>. Taking the square root of both sides, we get <span>x=√pq</span> as the geometric mean of p and q.

Hence in the given question the product of p and q is 8.

so,

x=√8

x=2√2

4 0
3 years ago
2/5 divided by 1/8. Simplest form
serg [7]

Answer:

1/20 or in a decimal 0.05

Step-by-step explanation:

Hope This helps :)

7 0
2 years ago
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A 10 meter ladder was placed on an angle. The base of the ladder is 5 meters away from the
Olenka [21]

Answer:

5^2 + h^2 = 10^2

Step-by-step explanation:

This is a clear example of the Pythagorean Theorem, a relation of all sides in a right triangle. The equation itself is a^2 + b^2 = c^2. By simply plugging in the given values into the triangle, you would get the answer.

4 0
3 years ago
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Which set of ordered pairs represents a linear relationship?
adoni [48]

Answer:

A

Step-by-step explanation:

5 0
2 years ago
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