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vladimir1956 [14]
3 years ago
11

13x = 15x - 8 What is the value of X?

Mathematics
1 answer:
maw [93]3 years ago
8 0

Answer:x equals 4

Step-by-step explanation:

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Find the values of x and y.
vova2212 [387]

Look at the picture.

We have the equation (1) 12x + 4y = 40.

We know, the sum of the acute angles in a right triangle is 90°.

Therefore we have the equation (2) (12x + 4y) + (17x - y) = 90

Substitute (1) to (2):

40 + 17x - y = 90        <em>subtract 40 from both sides</em>

17x - y = 50   (3)

We have the system of equations:

\left\{\begin{array}{ccc}12x + 4y = 40&|:4\\17x-y=50\end{array}\right\\\underline{+\left\{\begin{array}{ccc}3x + y = 10\\17x-y=50\end{array}\right}\ \text{add both side of equations}\\.\qquad20x=60\qquad|:20\\.\qquad x=3

Substitute the value of x to (3)

17(3)-y=50\\51-y=50\qquad|-51\\-y=-1\to y=1

Answer: x = 3 and y = 1.

4 0
3 years ago
at Kayla swimwear 6 out of 20 style at the store are bikinis what percentage of swimsuit styles at the store are bikinis​
jasenka [17]

Answer:

is wrong,6/20,3/10

Step-by-step explanation:

8 0
3 years ago
6:
dem82 [27]

Answer:

D) gallery: g

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    main floor: 2g + 225

Step-by-step explanation:

3 0
3 years ago
Show the expression as the base to one power. 4^5⋅4^3
White raven [17]
Hey there! :D

When you multiply powers, you add them.

You would only need to add 5 and 3 together. 

5+3= 8

4^8 <=== the answer

I hope this helps! 
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5 0
3 years ago
A car travels 60 miles per hour, and a plane travels 15 miles per minute. How far does the car travel while the plane travels 60
lara [203]

Answer:

The car travels 40 miles while the plane travels 600 miles.

Step-by-step explanation:

This problem can be solved by rules of three.

In a rule of three problem, the first step is identifying the measures and how they are related, if their relationship is direct of inverse.

When the relationship between the measures is direct, as the value of one measure increases, the value of the other measure is going to increase too.

When the relationship between the measures is inverse, as the value of one measure increases, the value of the other measure will decrease.

In this problem, all the measures have direct relationship.

The first step is knowing how much the plane travels in a hour.

The problem states that in a minute, the plane travels 15 miles. How much does it travel in 60 minutes.

1 minute - 15 miles

60 minutes - x miles

x = 60*15

x = 900 miles

In a hour, the plane travels 900 miles.

Then we need to know how long it takes for the plane to travel 600 miles.

1 hour - 900 miles

x hours - 600 miles

900x = 600

x = \frac{600}{900}

x = 0.667 hours = 40 minutes.

Finally, we discover how much the car travels in 40 minutes.

The problem states that in a hour(60 minutes), the car travels 60 miles, so:

60 miles - 60 minutes

x miles - 40 minutes

60x = 2400

x = \frac{2400}{60}

x = 40 miles.

The car travels 40 miles while the plane travels 600 miles.

3 0
3 years ago
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