Mathematics Middle School

What is the value of x
1.4x + 2.6x = -16

Answers

Answer 1

Answer:

x=-4

Step-by-step explanation:

1.4x +2.6x = -16

combine like terms (numbers with numbers, and numbers with variables together)

4x = -16

get x by itself (isolation)

x = -4

Answer 2

Answer:

\(x=-4\)

Step-by-step explanation:

Start with:

\(1.4x+2.6x=-16\)

Combine like terms:

\(4x=-16\)

Divide both sides of the equation by the coefficient of \(x\), which is \(4\):

\(x=-4\)

Related Questions

When tossing a two-sided, fair coin with one side colored red and the other side colored green, determine P(green).

2
one half
green over red
red over green

Answers

Answer:

one half

Step-by-step explanation:

Total number of outcomes = 2

Event of obtaining green = 1

Probability of obtaining green= one half

The solution is Option B.

The probability of getting green P ( green ) = 1/2

What is Probability?

The probability that an event will occur is measured by the ratio of favorable examples to the total number of situations possible

Probability = number of desirable outcomes / total number of possible outcomes

The value of probability lies between 0 and 1

Given data ,

Let the probability of getting a green while tossing a coin be P ( green )

Now , the total number of colors in the coin = { red , green } = 2

The probability of getting a green = green / total number of colors in the coin

Substituting the values in the equation , we get

Probability of getting a green while tossing a coin P ( green ) = 1/2

Probability of getting a green while tossing a coin P ( green ) = 0.5

Therefore , the value of P ( green ) is 1/2

Hence . the probability is 1/2

To learn more about probability click :

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#SPJ2

NEED HELP 10 points

Insert grouping symbols in the expression so that the value of the expression is 14.

2 x 2 + 3^2-4+3*5

Answers

Answer:

Original: 2 x 2 + 3^2 - 4 + 3 * 5

Answer: (2 * 2 + 3)^2 - [(4 + 3) * 5]

Step-by-step explanation:

NEED HELP 10 points Insert grouping symbols in the expression so that the value of the expression is
You said 10 points ???2

Some students recorded how many minutes they spent on the phone in one day. They put the results in a Stem-and-Leaf Plot.



What is the mean number of minutes spent on the phone?

Some students recorded how many minutes they spent on the phone in one day. They put the results in a

Answers

Answer:   31

Explanation:

The data from the stem-and-leaf plot is:

10,

24,25,26,

30,30,32,33,

40,45,46

Add up those values

10+24+25+26+30+30+32+33+40+45+46 = 341

Then divide over n = 11 which is the sample size.

341/11 = 31 is the arithmetic mean.

Answer:

341/11 = 31 is the arithmetic mean.

Step-by-step explanation:

Math 10 points,Easy i belive

Math 10 points,Easy i belive

Answers

Answer:

90 Degrees clockwise Rotation.

Step-by-step explanation:

Answer:

90 degree clockwise rotation

Step-by-step explanation: I 'm in the 8th grade and we already learned this. Hope this helps

btw can i have brainliest?:)

The equation of the line of best fit relating age (in years, x) and the median height (in cm, y) of boys is given.

y = 6.5x + 75.5y=6.5x+75.5
Predict the median height of boys age 13.



123 cm

140 cm

160 cm

82 cm

Answers

Answer:

160 cm

Step-by-step explanation:

Substitute x = 13 into the equation

y = 6.5(13) + 75.5 = 84.5 + 75.5 = 160

The median height of boys age 13 is 160 cm

Answer:160 cm

Explain: I just got a feeling

How many sides do 4 nonagons and 4 triangles have in all?

Answers

Answer: Regular nonagon has 9 sides. 9×9×9×9 is 6,561 which is the total of 4 nonagons. A regular triangle has 3 sides. 3×3×3×3 is 81 which is the total of 4 triangles. When you add 6,561 and 81 together, it's 6,642. Therefore, 6,642 is the 4 nonagons and 4 triangles in total.

it’s pizza I hope this helps

On a coordinate plane, what is the distance from the point (-2, -8) and the point (-5, 10). Round to the nearest tenth.
PLS HURRY!!!! ​

Answers

Answer:

18.2 because you just do rise over run.

18.2482875909 is the answer

In 56 years, Kevin will be 9 times as old as he is now

How old is Kevin now?

Answers

Answer:

correct answer is 7 years

Step-by-step explanation:

A+56=9(A)

56+9A

A=7

he will be 7 years old he is pretty old

Answer:

Kevin is 7 years old right now.

Step-by-step explanation:

Let x be Kevin's age right now, that's what we're trying to find.

In 56 years, he'll be 9 times older than he is now, so we can say:

x + 56 = 9x

Now we can get the x values on the right side of the equation so that:

56 = 8x

Now solve for x and you have his current age which is 7.

Solve the puzzle, match the symbols, and input the unlock code to unlock this door! Use scratch paper if you need it, and don't include hyphens or spaces in the crossword boxes.
I NEED HELP!

Solve the puzzle, match the symbols, and input the unlock code to unlock this door! Use scratch paper

Answers

Hello!

1. quantity

2. convert units

3. percent

4. ratio

5. unit rate

6. proportion

7. proportionality

8. equivalent ratios

Code: ratio escape

I hope this is correct :)

Solve the puzzle, match the symbols, and input the unlock code to unlock this door! Use scratch paper if you need it, and don't include hyphens or spaces in the crossword boxes.
I NEED HELP!

PLEASE TELL ME WHAT"S THE ANSWER AND SHOWM E HOW YOU GOT THE ANSWER

PLEASE TELL ME WHAT"S THE ANSWER AND SHOWM E HOW YOU GOT THE ANSWER

Answers

12/6

Step by step
12 divided by 2= 6

Help pls. I'll mark as brainlist.

Help pls. I'll mark as brainlist.

Answers

Answer:1. height in feet and height in Inches

1 feet = 12 inches

So, it's proportional2. The number of cookies baked and the minutes in the ovenSo, it's not proportional3. One bread needs a fixed grams of flourSo, it's proportional4. Since s = vtSo, it's proportional5. One gallon of gasoline cost's a fixed prince.So, it's proportional

Note : We just need to judge whether it accords with "y = kx"

{Proportional relationship}

It is a consistent raise on the price for every number of gallons. For example, so it is proportional.

If snow accumulates at a rate of 2 inches every 3 hours, how many hours will it take to accumulate 2 feet of snow?​

Answers

Answer:

12hours

Step-by-step explanation:

24inch-2feet

24/2=12

Correct answer:
12 hours !!

Explanations:
2 feet = 24 inches
2 inches per 3 hours
24 divided by 2 = 12

Find the surface area of a top open cylinder

12 in radius
2 in height

Find the surface area of a top open cylinder 12 in radius 2 in height

Answers

The surface area of the top open cylinder is 6810.149 sq.cm.

A cylinder is a three-dimensional solid that consists of two congruent surfaces (bases) and one lateral surface.

Surface area of a cylinder = Base area + Lateral area

Base area of a cylinder = 2 × π × r²

Lateral area of a cylinder = (2 × π × r) × h

Therefore, here base area of a cylinder = 2× π × 12²

                                                                  = 5837.27 sq.cm.

And, lateral area of a cylinder = (2 × π × 12) × 2

                                                  = 972.8784 sq.cm.

Therefore, total surface area of a cylinder = 5837.27 + 972.8784

                                                                      = 6810.149 sq.cm.

To know more about surface area:

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Surface Area: 6810.15 cm^2

Use what you know about powers to explain why a0 = 1

Answers

The say power to the point but do I know to meaning no
Every number to the power of 0 equals 1, which is why this works for a^0=1

Nolan began with ​$26 in bank account and spent ​$2 each day. The line models the amount of money in his bank account. Be incorrectly wrote an equation for the line in​ slope-intercept form as y= "-2x+13" . What is the correct equation for the line in​ slope-intercept form? What mistake might Nolan have​ made?

Nolan began with $26 in bank account and spent $2 each day. The line models the amount of money in his

Answers

Answer:

y=2x - 26

Step-by-step explanation:

y=mx+b

2 is m

26 is b

Y=2x-26

Explanation
Y=mx+b
2 is m
26 is b

An art teacher is ordering colored pencils for the new school year. The table shows the number of colored pencils per box size. Box Size Number of Colored Pencils Small 12 Medium 64 Large 100 The teacher buys 24 small boxes, 12 medium boxes, and 5 large boxes. She had to return 3 small boxes due to defects. How many colored pencils does the teacher have in all?

Answers

Answer: 1520

Step-by-step explanation:

Multiply 24 times 12


Multiply 12 times 64

Multiply 5 times 100

Add the three sums

Subtract the product of 3 times 12

(288 + 768 + 500 = 1,556.  1,556 - 36 = 1520)

Thank you to all the people who helped! :)

Thank you to all the people who helped! :)

Answers

Answer:

Oh my gosh!

Step-by-step explanation:

Good job, nice!

Answer:

well I am glad they could help!!

Step-by-step explanation:

Can I get a explaination?

Can I get a explaination?

Answers

Answer:

D

Step-by-step explanation:

Since it is |-3.25|, then it is 3.25 because of its absolute value (the lines around it).

Now that you know it's absolute value, look on a number line and find out where 3.25 is and it's in between 3.2 and 3.3

sorry if im wrong

I think the one above this is correct actually

help me with b, please :)

help me with b, please :)

Answers

Answer:11.25

Step-by-step explanation:

The number 5.25 is increased by one which is 6.25 then you add it by one again you get 7.25 but if you add 2 you get 9.25 so you add 2 to 9.25

the answer is 11 . 25 .

PLEASE HELP!!! I’ll mark you brainliest!!

PLEASE HELP!!! Ill mark you brainliest!!

Answers

Answer:

x=8 m, and for y it is 3m, only if you need y

Step-by-step explanation:

I don't know..............................

I don't know..............................

Answers

Answer:

C

Step-by-step explanation: hope this helps

ILL GIVE BRAINLIEST AND 50 + 25 POINTS TO CORRECT ANSWER

x = a + b + 4

a ∝ \(y^{2}\), b ∝ \(\frac{1}{y}\) when x = 18, y = 2 and when x = -3, y = 1 then find x when y = 4.

In the end solve it with this equation, x = \(ky^{2}\) + \(\frac{m}{y}\) + 4

TYVM!!

Answers

Answer: x=ky2+m/y+4=15.8

Step-by-step explanation:

In a right triangle the length of a hypotenuse is c and the length of one leg is a. Find the length of the other leg b, if:

c=13, a=5

Answers

Answer:

12

Step-by-step explanation:

a^2+b^2=c^2. This is the pythagorean theorem.

c^2-a^2=b^2.

Substitute c and a

13^2-5^2=b^2

169-25=b^2

144=b^2

sqrt144=b

b=12.

Hope this helps plz hit the crown :D

Step-by-step explanation:

C^2=A^2+B^2

C^2=13 A^2=5 B^2=?

13^2=5^2+B^2

169-25=B^2

B^2=144

\( \sqrt{144} \)

B=12

Which fraction is easier to convert into a decimal?

11/18 or 43/50, explain

Answers

43/50 is easier because 50 is half of 100

Watch this

43/50. Since 50 is HALF of 100 so we multiply 2 by 50 which is 100. But since we multiplied by 2 for the denominator we have to do the same for the numerator so 43 x 2 is equal to 86.

So we get 86/100 which is 0.86

43/50 decimal 0.87

It's easier to turn into a decimal because both are bigger numbers and and closer to each other so it would be easier to divide

Answer correctly please. Explain your work on how you got your answers.
Put in order. Due tomorrow! Worth 12 points.

Answer correctly please. Explain your work on how you got your answers.Put in order. Due tomorrow! Worth

Answers

Answer:

a:11

B:33

D: y=11x

E:y=11x256=1816

Positive

Step-by-step explanation:

Carrie buys 7/8 pound of red apples and 15/16 pound of green apples. Which answer is the most accurate estimate for how many more pounds of green apples she buys than pounds of red apple?

0 pounds

12 pound

1 pound

Answers

1 pound would be the correct answer I think
I would say (0 pounds)
If you find the same denominator for both fractions you’d see that 7/8= 14/16 and 15/16 would stay the same so they are 1/16 apart meaning it’s closer to 0 than to 1.

Question: 1/3 ÷ 4 = 1/12 because-
A) 1/6 × 2 = 1/3
B) 1/12 × 4 = 1/3
C) 1/24 × 8 = 1/3
D) 1/48 × 4 = 1/12

Question: 1/3 4 = 1/12 because-A) 1/6 2 = 1/3B) 1/12 4 = 1/3C) 1/24 8 = 1/3D) 1/48 4 = 1/12

Answers

Answer:

d sorry if I'm wrong I'm rusty at mathematics

i’m pretty sure it’s D

PLEASE ANSWER I WILL GIVE BRAINLEIST

PLEASE ANSWER I WILL GIVE BRAINLEIST

Answers

-16 i think is the correct anwser because you take the old number then subtract the new number then divide the old one then multiply by 100
I think it’s 112% :)

Key Concepts

• The constant of proportionality is the _______ value of the ratio between two proportional quantities.

• To find the constant of proportionality on a graph, find the y-value when the x-value is
________ .

• You can use ______ reasoning to find the constant of proportionality when the x-value of 1 is not labeled on a graph.

• A proportional relationship is sometimes described by words. Setting up a table to find the _______ of proportionality can be useful.

Key Concepts The constant of proportionality is the _______ value of the ratio between two proportional

Answers

Answer:

equal, right, answer

Step-by-step explanation:

NEED HELP ASAP. ASSISTANCE IS GREATLY APPRECIATED.

What is the volume, in cubic inches, of a cone that has a radius of 9 inches and a height of 16 inches? Use 3.14 for π (pi), and round to the nearest hundredth.

Answers

Answer:

The volume (V) of a cone can be calculated using the formula: V = (1/3)πr^2h, where r is the radius and h is the height.

Substituting the given values, we get:

V = (1/3) x 3.14 x 9^2 x 16

Calculating this expression gives us:

V = 1810.08 cubic inches

Rounding to the nearest hundredth gives us:

V ≈ 1810.08 cubic inches (rounded to two decimal places)

Therefore, the volume of the cone is approximately 1810.08 cubic inches.

Answer:

1363.04

Step-by-step explanation:

V = (1/3) * 3.14 * 9^2 * 16

Simplifying:

V ≈ 1363.04 cubic inches

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