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4 years ago

What is X in this equation.7x+23=-6x-42Please Explain.

Mathematics

2 answers:

marysya [2.9K]4 years ago

8 0

Answer:

Step-by-step explanation:

The ones with the x always go on the left side and the ones without x always go on the right side.
Every time they change side + changes into - and the other way around.

So now it looks like this 7x + 6x = -42 - 23. When you solve 7x +6x and - 42- 23 it should look like this 13x = -65 now all you need to do is to divide 65 with 13 and you'll get x = 5.

I hope this helps :)

allochka39001 [22]4 years ago

4 0

X:-19 I hope this help you.

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Change the line 3x − 8y = 5 into slope-intercept form.

Nimfa-mama [501]

Slope is y=mx+b
m=slope
b=y intercept

solve for y basically

3x-8y=5
minus 3x both sides
-8y=-3x+5
divide both sides by -8
$y=\frac{3}{8}x-\frac{5}{8}$

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3 years ago

A batch consists of 12 defective coils and 88 good ones. Find the probability of getting two good coils when two coils are rando

Allushta [10]

Answer:

The probability of getting two good coils when two coils are randomly selected if the first selection is replaced before the second is made is 0.7744

Solution:

Total number of coils = number of good coils + defective coils = 88 + 12 = 100

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p(first selection) = p(second selection) = $\frac{\text { number of good coils }}{\text { total number of coils }}$

Hence, p(getting 2 good coil for two selection) = $\frac{88}{100} \times \frac{88}{100} =\bold{0.7744}$

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3 years ago

Penny's function has an output that is four more than three times the input. Johns function expressed in slope-intercept form is

jonny [76]

John's function : y = 3.5x - 4
Penny's function : y = 3x + 4

C. John's function has a greater rate of change, because 3.5 > 3

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4 years ago

Help Brainleist 15 points

geniusboy [140]

Z=22
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2 years ago

Read 2 more answers

The cheapest available ticket for Super Bowl Ll on the secondary market costs

drek231 [11]

Answer:

He must work 52 days to pay for a single ticket.

Step-by-step explanation:

This question can be solved using proportions.

Per hour:

Joel earns $7.25 per hour, 20% of which is deducted for taxes. So without taxes, in each hour, he earns 100%-20% of 80% of this, so 0.8*7.25 = $5.8.

Per day:

He works 9 a.m. to 5 p.m. each day, so 8 hours a day.

For each hour, he earns $5.8.

So in a day, he makes 8*5.8 = $46.4

How many days he must work:

The ticket costs $2400.

He makes $46.4 a day.

So, to buy a ticket, he needs to work:

2400/46.4 = 51.7 days

Rounding up

He must work 52 days to pay for a single ticket.

7 0

3 years ago

What is X in this equation.7x+23=-6x-42Please Explain.​

What is X in this equation.7x+23=-6x-42Please Explain.