Mathematics High School

Solve 3[-x + (2 x + 1)] = x-1.
X=
DONE

Answers

Answer 1

Answer:

x=−2

Step-by-step explanation:

Simplify both sides of the equation.

3(−x+2x+1)=x−1

Distribute

(3)(−x)+(3)(2x)+(3)(1)=x+−1

−3x+6x+3=x+−1

Combine Like Terms

(−3x+6x)+(3)=x−1

3x+3=x−1

3x+3=x−1

Subtract x from both sides.

3x+3−x=x−1−x

2x+3=−1

Subtract 3 from both sides.

2x+3−3=−1−3

2x=−4

Divide both sides by 2.

2x/2=−4/2

x=-2

Related Questions

Solve equation by using the quadratic formula.
2 x squared minus 5 x = 7
a.
x = StartFraction 2 Over 7 EndFraction, negative 1
c.
x = StartFraction 7 Over 2 EndFraction, negative 1
b.
x = StartFraction 2 Over 7 EndFraction, 0
d.
x = StartFraction 2 Over 7 EndFraction, 1

Answers

Answer:

Do you need all of them?

Step-by-step explanation:

Answer:

C) x=7/2,-1

Step-by-step explanation:

just took the pretest got this right

If Mia has brings 14 donuts to the party and Lizzy brings 14 also then how many cookie's is there all together

Answers

add the two donuts together, which is 28

Andrea spins the arrow on the spinner one time.
What is the probability that the arrow will land on a part of the circle that has a star?
O A O
C.
OB. 1
OD. 1

Answers

My Answer for your question is

A. O

Can someone help me with this question pls and thank you

Answers

Answer:

x>2

Step-by-step explanation:

Longer than two hours is >.

X>2 is the answer I think

Jeannie got a new pair of eye glasses. She was able to pay $15 at the
time she received her glasses. She will pay $12 each month on the
balance. The original cost of the glasses was $87.
a. Write an equation to determine how many months it will take
Jeannie to pay for her glasses?

Answers

Answer:

Equation A. 12x=87

Which linear equation is represented by the table? Please help me, I really don’t understand, thank you so much!!

Answers

Answer:

C) y=x+3

Step-by-step explanation:

I did it and got it right

At a hot dog stand they serve regular hot dogs and footling hot dogs at a ratio of 5 to 3. Based on this ratio how many footlong hot dogs will be served if there is a total of 120 hot dogs served.

Answers

Answer:
45
Step-by-step explanation:
Ratio is 5:3
So total ratio "parts" is 5 + 3 = 8
In total there are 120 dogs served, so each part is:
120/8 = 15 dogs
Since, footlong hot dogs are "3" parts, and each part is 15 dogs, there will be:

3 * 15 = 45 footlong hotdogs

Lin runs 5 laps a track in six minutes how many minutes per lap is that

Answers

Answer:

1.2 minutes

Step-by-step explanation:

6 divided by 5 = 1.2

To do this, you take the total number of minutes, which is 6, and divide by the number of laps that Lin ran, which was 5.

Answer:

1.2 minutes

Step-by-step explanation:

5 laps/6 minutes = 1 lap/x minutes

To convert the ratio from 5 laps to one laps, 5 was divided by 5. Therefore, to keep the same ratio, 6 must also be divided by 5, making the answer:

1 lap/1.2 minutes

7th grade math please helpp i have alot of questions due in 10mins​

Answers

Answer:

V=247.8

Step-by-step explanation:

V=whl

V = (4.2)(5)(11.8)

Question 4
Solve the system of equations and choose the correct answer from the list of options.
x+y=-3
y = 2x + 2
A) ( 5/3,4/3)
B) (-5/3,-4/3)
C) (-2/5,-3/4)
D) ( 3/4,3/5)

Answers

I believe it’s C (-2/5,-3/4)

which equation matches the graph of the greatest integer fiction giving below? a p e x

Answers

Answer:

A P E X  < CS

Step-by-step explanation:

simple

Please help whats the error ​

Answers

Answer:

x=20°

Step-by-step explanation:

5x°=100° ----because they are vertically opposite angles

x=100/5

x=20°

Find the area of the composite figure?


Answers

Answer:

128

Step-by-step explanation:

Let's start by figuring out the last side of the triangle

we can use the pathagoryous theroem and get

11.9²+x²=16.9²

Solve this and get x=12

Let's now compute the area of the triangle

b*h*.5

12*11.9*.5=71.4

So 71.4 is the area of the triangle

we now need to find the area of the semi circle.

to do this we are going to find the area and then divide it by 2

We know that the length is equal to 12 which means that the radius is 6

so we have

π6²/2

which is 56.55

We add the 71.4+56.55= 127.94 which rounds to 128

Answer:

212.758

Step-by-step explanation:

Find the semi-circle first, the diameter is 16.9 ft.

To find area:

Formula:

pi x radius x radius x 1/2

16.9 ÷ 2 = 8.45 (radius)

22/7 x 8.45 x 8.45 = 224.407 (Circle)

224.407 ÷ 2 = 112.203 (Semi circle)

Find the triangle:

1/2 x base x height or length x base x height

But for now, we will use the first one.

1/2 x 16.9 x 11.9 = 100.555

Now add them up.

100.555 + 112.203 = 212.758

(I don't know what units you to put for your answer since I don't learn American mathematics, so it's up to you)

There are 1,240 skittles in a bag, 25% are blue, .22 are red, 1/3 yellow and 1/5 are purple. Which color is least likely to be picked?

Answers

purple is the correct answer

Step-by-step explanation:

[tex] \frac{1}{3} = 0.3333...[/tex]

[tex] \frac{1}{ 5} = 0.2[/tex]

[tex]25\% = 0.25[/tex]

0.22=0.22

[tex]0.2 < 0.22 < 0.25 < 0.33...[/tex]

0.2 (1/5)/ purple is the least likely.

just answer with the scale factor pleaseee ​

Answers

1.5 :)

Step-by-step explanation:

you would divide the 2 numbers, then youre left with the sf

Write the equation of the line passing through the point (3, 5) that is
PEREPENDICULAR to y = -3/4x + 5 in slope-intercept form.

Answers

Answer:

Step-by-step explanation:

perp. 4/3

y - 5 = 4/3(x - 3)

y - 5 = 4/3x - 4

y = 4/3x + 1

Write as a fraction with a whole number divisor: 35.7 ÷ 0.07

Answers

Answer:

510  

that the whole number

Find the volume of the cylinder. Use 3.14 for pi. Round your answer to the nearest tenth.

Answers

Answer:

The formula for the volume of a cylinder is V=Bh (where B is the base) or V=πr2h . The radius of the cylinder is 9 ft and the height is 6 ft. Substitute 9 for r and 6 for h in the formula V=πr2h = (3.14) (9) (2) (6) =339.12

Step-by-step explanation:

Now C=339.12 round to the nearest tenth is 339.1

A bus going 45km/h travels nonstop from the northern end of town to the southern end of town in 15 minutes. How far does the bus travel?

Answers

Step-by-step explanation:

15 minutes = 0.25 hours.

Distance the bus travels

= (0.25h)(45km/h)

= 11.25km.

PLEASEEEEEE HELPP ME EEEE :)

Answers

It’s true:) hope this helps
Pretty sure it’s True

Ricardo ran 160 minutes last week at the park. If he runs 15% more this week,
how many total minutes will Ricardo run this week?

Answers

Answer:

Im pretty sure its 184 minutes

I need help solving

Answers

Step-by-step explanation:

Divide a percentage by 100% to convert it.

=> (1/20%) / 100% = 0.0005 or 1/2000.

What inverse operation should be used to isolate the variable in the equation j ÷ 12 = 50?

Answers

Answer:

multiplication...

Step-by-step explanation:

50 x 12 = 600

SO...

j = 600

SOO...

600 / 12 = 50

there u go

can i be brainiest...

Multiplication should be the correct answer

Is (4, 2) is the solution to the system below?
Explain how you know by recording an audio response or by showing your work.
y=2x-6
x+y=8

Answers

It is not a solution because when it is plugged into the second equation x+y=8, making it 4+2=8, it is not true.

(3g - 8) - (2g - 1) ...........

Answers

Answer:

g-7

Step-by-step explanation:

How many degrees is -6.2 rotations clockwise

Answers

answer: −2,232°
explanation:
360°(-6.2) = −2,232°

If you combine 4x and -2x how many x's will we have left?​

Answers

Answer:

Step-by-step explanation:

4x+(-2x)=2x

mr. Kido purchased 5
footballs for his
physicd education
class. If he paid
$41.25. how much was
each football?

Help!!

Answers

Answer:

8.25

Step-by-step explanation:

Answer:

$8.25

Step-by-step explanation:

Divide: 41.25 divided by 5

41.25 divided by 5=8.25

$8.25

Hope this helped!! :)

Brainliest?!?!

Stay safe and have a wonderful day/afternoon/night!!!

- 1 greater than or equal to x, and - 9 is less than x

Answers

Answer:

−1⩾x>9

Step-by-step explanation:

9 less than x simply means x is greater than 9

[tex] - 1 \geqslant x > 9[/tex]

A function is shown
f(x)=2/3x+3 what is the value of f(12)

Answers

Answer:

11

Step-by-step explanation:

f(12) = 2/3x+3

So, replace x with 12.

2/3(12) + 3

2/3 x 12 = 8

8 + 3 = 11

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