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Korvikt [17]
3 years ago
7

7x=5+5x x equals what

Mathematics
1 answer:
dybincka [34]3 years ago
3 0

7x=5+5x

x=5/2

It could also be 2 1/2

You might be interested in
Density of 222.50 g and 25.00 cm3
e-lub [12.9K]

Answer:

8.9 grams per centimeters cubed

Step-by-step explanation:

The formula for density is D=M÷V

Just divide 222.50 by 25.00 and you are done.

8 0
3 years ago
Please help! Thanks in advance.
alukav5142 [94]
In this problem, we need to plug in the given x values for f(x)=0 and find a and b.

When we plug in 1, we get: 2 \times {1}^{4} - 5 \times {1}^{3} - 14 \times {1}^{2} + a \times 1 + b = 0

Simplify:
2 - 5 - 14 + a + b = 0
- 17 + a + b = 0
a + b = 17

We got our first statement about the values of the variables. If we find one more we can find those 2 variables.

We have another given root: 4.

Plug it in:
2 \times {4}^{4} - 5 \times {4}^{3} - 14 \times {4}^{2} + a \times 4 + b = 0
512 - 320 - 224 + 4a + b = 0
- 32 + 4a + b = 0
4a + b = 32

Now we have our second one. We can combine them:
a + b = 17 \\ 4a + b = 32

I use elimination method which is easier here.

Multiply the top equation by -1: - a - b = - 17 \\ 4a + b = 32

Add them up:
3a = 15

Simplify:
a = 5

Now we have a, we can plug in one of those equations to find b:
5 + b = 17
b = 17 - 5
b = 12

So, the answers are a=5 and b=12 .
6 0
3 years ago
Area of the figure .
blondinia [14]

Answer: the answer is not in the multiple choice.

area = 60 in^2

Step-by-step explanation:

4 0
2 years ago
35
Serhud [2]

Answer: c

Step-by-step explanation:

5 0
2 years ago
Samuel bought a jacket for $16 in January. The cost of the jacket increased to $24 in September. What percent of the original pr
garri49 [273]
Write a proportion first, change over original, like this:
 8      x
16   100
(I got 8 because the difference between 24 and 16 is 8 and I got 100 because percents are out of 100.)
Cross multiply 8 by 100 and you get 800.
Divide 800 by 16 and you get 50.
It changed by 50%
6 0
3 years ago
Read 2 more answers
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