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IgorC [24]
3 years ago
6

What is the x

7x + 7 + 3x" alt="5x - 3 = 7x + 7 + 3x" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
Gemiola [76]3 years ago
8 0

Subtract the left side, simplify, divide by the x-coefficient, than add the opposite of the constant.

5x-3=7x+7+3x\quad\text{given}\\\\0=(7x+7+3x)-(5x-3)\quad\text{subtract the left side}\\\\0=x(7+3-5)+(7+3)\quad\text{collect terms}\\\\0=5x+10\quad\text{simplify}\\\\0=x+2\quad\text{divide by 5}\\\\-2=x\quad\text{add the opposite of the constant}

The value of x is -2.

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What’s the system of y=x-4 and y=4x-10?
Natasha_Volkova [10]

Answer:

That is the system.

y = x - 4

y = 4x - 10

If you are looking for the solution then use the method of substitution or the method of elimination.

4 0
3 years ago
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solniwko [45]
Answer: 20

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8 0
3 years ago
Write 34.8% as a fraction in simplest form.
balandron [24]

Answer:

87/250

Hope this helps!!

5 0
3 years ago
Suppose 40% of all college students have a computer at home and a sample of 64 is taken. What is the probability that more than
Art [367]

Answer:

0.13093

Step-by-step explanation:

Give. That :

Population mean = 40% = 0.4

Sample size (n) = 64

Probability that more than 30 have computer at home

Mean = np = 64 * 0.4 = 25.6

Standard deviation = sqrt(n*p*(1-p)) = 3.919

P(x > 30)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (30 - 25.6) / 3.919 = 1.1227353

p(Z < 1.122) = 0.13093 ( Z probability calculator)

6 0
3 years ago
The endpoints of a diameter of a circle are (-4,
aliya0001 [1]

<u>Answer:</u>

<h2>(4, 6)</h2>

<u>Explanation:</u>

x = -4 + (12 - (-4))/2

x = -4 + (12+4)/2

x = -4 + 16/2

x = -4 + 8

x = 4

y = 2 + (10 - 2)/2

y = 2 + 8/2

y = 2 + 4

y = 6

the coordinates of the center of the circle: (4, 6)

7 0
3 years ago
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