Im solving variables 31 = 3 (y+7) - 8y

Answers

Answer 1
combine like terms
subtract 21 from both sides of the equation
simplify
divide both sides
y=-2
Answer 2

Answer:

y = -2

Step-by-step explanation:

31 = 3 (y+7) - 8y

31 = 3y +21 - 8y

31 = -5y +21

10 = -5y

-2 = y


Related Questions

200-123+289-2/2=????

Answers

Answer:

365

Step-by-step explanation:

200-123+289-2/2

77+289−2/2

366−2/2

366−1

= 365

PLEASE HELP IM NOT GOOD AT MATH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Jimmy was walking to get the mail; at which time he fell into a hole and broke his ankle. He has a PPO insurance plan. His total bill was $2,000. If Jimmy has a $1,000 deductible with an 80/20% co-insurance, how much total will Jimmy have to pay out of pocket? Show your work.

Answers

Answer: $200

Step-by-step explanation:

Since there is a deductible here, you deduct it from the total bill first:

= 2,000 - 1,000

= $1,000

With an 80/20% coinsurance plan, you will pay for 20% of this bill and your insurance company will pay 80%.

You will therefore pay:

= 1,000 * 20%

= $200

Seahorses change color and swim together in predetermined ways before mating. These behaviors are called
A. asexual reproduction.
B. sexual reproduction.
C. courtship rituals.
D. budding.

Answers

the answer is c.
i have sea horses
Courtship rituals.

so C.

Type the correct answer in the box. If necessary, use / for the fraction bar.
A fish tank is a cube. Its side length is 4 1/2 feet.
The volume of water needed to completely fill the fish tank is ______ cubic feet.

Answers

Answer:

15 i think

Step-by-step explanation:

Answer:

Step-by-step explanation:

PLZZZ, help I having a Test!!!

What is the length of AD? The picture is attach....

Answers

Answer:

kite

Step-by-step explanation:

it be kite

Solving a Real-World Problem
Mr. Martin is giving a math test next period. The test, which is worth 100 points, has 29 problems. Each problem is
worth either 5 points or 2 points. Write a system of equations that can be used to find how many problems of each
point value are on the test.
Let x be the number of questions worth 5 points and let y be the number of questions worth 2 points.
x + y = 29, 5x + 2y = 100
x + y = 100, 5x + 2y = 29
5x + y = 29, 2y + x = 100
2x + y = 100, 5y + x = 29

Answers

Answer:

x + y = 29

5x + 2y = 100

Step-by-step explanation:

Here, we want to set up equations

There are 29 problems, so adding up the number of individual problem types will give 29

x + y = 29 ••••••(i)

Let us work with points now;

x is worth 5 points, y is worth 2 points

Thus, mathematically;

5x + 2y = 100 ••••••••••(ii)

Answer: A. x + y = 29, 5x + 2y = 100 and the other one is B. 14 problems worth 5 points and 15 problems worth 2 points

HELPPPPP PLEASEEEE!!!!

Answers

Answer:

pretty sure x is 60 because 60+25 is 80 and its the same as N so 80

Step-by-step explanation:

Solve 7x - 9 = 28 + 4(x - 1).

A X = -11
B x = 11
C X = 3
D x=-3

Answers

Answer is A. X= 11
Have a good day
It’s B I just used a calculator to it :)

Helppppppppppppppppppppp due in 2hrs


plz watch for more questions

the 2nd pic has the 2 options plz have an explanation

Answers

Answer:

B. 20 = 2g

Step-by-step explanation:

What we see here is a diagram showing a bar of 20 at the top, and a pair of g's bars each taking up half of the 20 bar.

Seeing this, that would mean the 2 bars showing g equal 20, so the equation 20 = 2g is the one which the diagram shows.

If interest is compounded semi-annually, which expression represents the account balance in t yeats?

Answers

Answer:

ANNUAL Compounding : Total = Principal * (1 + rate)^years

Semi-Annual TOTAL = Principal * (1 +rate/n)^n*years

where "n" is the number of compounding periods per year

So the formula for semi-annual compounding is

TOTAL = Principal * (1 +rate/t)^t*years

Step-by-step explanation:

4x - x, for x=2 WHATS THE ANSWER

Answers

The answer is 6 4(2)=8 -2 = 6
Input 2 as x!

so (4•2)-2
8-2=6

The answer is 6!

3x+8 if x=2
15
13
16
14

Answers

Answer:

14

Step-by-step explanation:

3*2+8

=14

The position of county commissioner was added in what year? 1865 1777 1733 1868

Answers

Answer:

1868 is the answer your looking for

Step-by-step explanation:

Answer:

1868

In 1868, the position of county commissioner was added to the elected officials of a county.

Anybody know this? (Geometry)

Answers

Answer: d

Step-by-step explanation:

A bridge spans a distance of 1012m. Large cables are attached to the tops of the towers, 45 m above the road. The road is suspended from the large cables by many smaller vertical cables. The smallest vertical cable measures about 1.5m. Determine a quadratic equation for the large cables.

Answers

Answer:

A quadratic equation for the large cables is [tex]f(x) = \dfrac{87 }{512072} \cdot x^2 + 1.5[/tex]

Step-by-step explanation:

The shape of the quadratic equation representing the large cables is a parabola

Taking the point of the smallest vertical cables as the vertex, (h, k) with coordinates, (0, 1.5), we have;

h = -b/(2·a)

∴ 0 = -b/(2·a), from which we have, b = 2·a × 0 = 0

k = 1.5 = c - (b²/(4·a) = c - (0/(4·a)) = c

∴ c = 1.5

The standard form of the quadratic equation, a·(x - h)² + k is therefore, given as follows;

f(x) = a·(x - 0)² + 1.5 = a·x² + 1.5

At the towers which are on either side of the bridge, when x = 1012/2 = 506, f(x) = y = 45

Therefore, we have;

45 = a·506² + 1.5

a = (45 - 1.5)/506² = 87/512072 ≈ 1.699 × 10⁻⁴

The quadratic equation for the large cables, f(x), can therefore be presented as follows;

[tex]f(x) = \dfrac{87 }{512072} \cdot x^2 + 1.5[/tex]

I wasn't in class so I need help solving the inequality 7/10n+14<49

Answers

Answer:

n<50

Step-by-step explanation:

7/2*5n + 14<49

7n/2*5+14<49

(7n)+(2*5)14/2*5 <49

7n+10*14/2*5 <49

7n+140/2*5 <49

7n+140/10 <49

7n+140 < 10*49

7n+140 < 490

(7n+140)+(-140)<490+(-140)

7n+140-140<490-140

7n<350

7n/7 < 350/7

n<2*5^2*7/7

n<2*5^2

n<2*25

n<50

X+4²=2 answer plz plz​

Answers

Answer:

Step-by-step explanation:

Here you go mate

Step 1

X+4²=2  Equation

Step 2

X+4²=2  4x4

x+4^2=2

Step 3

x+4^2=2  subtract 4^2

answer

x=-14

hope this helps

i need help with geometry

Answers

Answer:

It would be C. I and II

Step-by-step explanation:

Susan and James will put their money together. What is the most expensive snack they will be able to buy? Math

Answers

Answer:

What snacks can they buy? if Susan and James don't know that they must be slow, might as well not even buy snacks if they can't figure that out.

Step-by-step explanation:

Where are the choices or the prices of the snacks

I
1. Eating at a nice restaurant, the waitress brings you a bill for $57.65. If
you want to leave 20%, what is the tip amount?

Answers

The tip amount will be 11.53 dollars

Answer:

I think 11 dollars but I don't know how many cents close to another dollar though so it would be somewhere around 11-12$

Casey's drill team squad was responsible for painting props for a performance at a band contest. The squad painted 18 props in 90 minutes. If they continued painting at this rate, how many props would they paint in 3 hours?

Answers

Answer: They would paint 36 props in 3 hours.

Step-by-step explanation:

Given: The squad painted 18 props in 90 minutes.

Time taken to paint each prop = [tex]\dfrac{90\text{ minutes}}{18}[/tex]

= 5 minutes

Now, 1 hour = 60 minutes

3 hours = 3 x 60 minute = 180 minutes

Total props painted in 3 hours = (180 )÷5

= 36

Hence, with same rate , they would paint 36 props in 3 hours.

I need help with all 3 please help!

Answers

THE POWER OF MEMES!!!!!!!!!!!!!!

PLEASEEEEEEE HELLLPPPPPPPPP EMERGENT

Answers

Answer:

She worked four hours and earned 36 dollars

Step-by-step explanation:

Answer:

it shows that when she works for 4 hours, she earns 36 dollars!!

Step-by-step explanation:

Find the solution between - x - 3y = 6 and the equation of the line shown on the graph below.

Answers

Answer:

They are the same line.

Step-by-step explanation:

y = -1/3x - 2

-x - 3y = 6

First, we need both lines to follow the equation of y = mx + b so that we can graph them. We already have one equation in that form (the one from the graph given), so we can ignore that for now.

Next, we need to solve -x - 3y = 6. Let's first move the x to the other side of the equal sign.

-3y = x + 6

Now, since we have a similar equation to what we need, we just need to divide the y by the given number in front (or -3). But that also means that we must divide the other side by the same amount (or each variable).

-3y = x + 6. -> y = -1/3x - 2

So, your final equation for -x - 3y = 6 should be;

y = -1/3x -2

Bringing down the other equation, we get:

y = -1/3x - 2 and y = -1/3x - 2

Making both equal to each other (they cancel each other out).

Hope this helps!

(And sorry that this is a long explanation)

How does the decimal point move when multiplying 79.816×103?

Answers

Answer:

it moves 2 to the right

solve the following equation when x = 8
15x - 2 =

Answers

Answer:

118

Step-by-step explanation:

15(8)-2

120-2

118

Brainly plss?

Answer:

118

Step-by-step explanation:

you do 15 x 8 then subtract 2 from the product

PLS HELP ill give brainliest im really stuck and its DUE SOON

Answers

Answer:

B

Step-by-step explanation:

Gabby left the mall and drove north. Violet left 3 hours later, driving 36 mph faster to catch up with Gabby. After 2 hours, she caught up with Gabby. Find Gabby’s average speed.
28 mph

72 mph

24 mph

60 mph

Answers

Answer:

24mph

Step-by-step explanation:

24 mph times 5 hours = 120 miles

24 mph + 36 mph = 60 mph

60 mph × 2 hours = 120 miles

Find the LCM of 18e2x, e2t and y3.
In a class of 45 students, there are 12 girls. What percentage of the girls are in the class?

Please explain!

Answers

Answer:

12/45 = 0.26666666

0.26666666 X 100 = 26.6666666

27%

Which two ratios form a proprtion?
A) 6/9 and 3/1
B) 6/9 and 1/3
C) 6/9 and 2/3
D) G/9 and 3/2

Answers

I think the answer is b
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