Mathematics College

Solve: 2x + 15 = -3x
Please help me out! I need to solve for X

Answers

Answer 1

Answer:

X=-3

Step-by-step explanation:

2x+15=-3x

15=-5x

x=15/-5

x=-3

Answer 2

Answer:

x = -3

Step-by-step explanation:

2x + 15 = -3x

15 = -5x

x = -3

Related Questions

Please help i’ll give brainliest and please dont say this is east im in 6th and just learned this

Answers

Answer:

Step-by-step explanation:

1/3 is .3 repeating

and you need to move decimal over twice for a percentage so should be 15%

Evaluate each expression for the given value of the variables. 2x + y for x= 7 and y = 11

Answers

Answer:

Step-by-step explanation:

Substitute 7 into 2, and 11 into y.

2(7)+(11)

14+11

10, 9, 11, 8, 15, 18, 13
1. Calculate the mean, median, and mode. Round to the nearest tenth.

Answers

Answer:

Median: 11

Mean: 12

Mode: none

Step-by-step explanation:

M A T H W A Y helps

Mode is something that is repeated multiple times

Answer:

Median- 11

Mean-12

Mode-none

Step-by-step explanation:First step: Put the numbers in order 8,9,10,11,13,15,18

The median is the middle number so that would be 11

Median-11

Mode is the most repeated number as you can see there is none

Mode- none

Mean is the average of all the numbers so first you add them all together and divide it by 7 because there are 7 numbers in total.

Mean- 12

What is an equation of the line that passes through the point (8,0) and is parallel to
the line 2 -4y = 20

The topic of this is parallel and perpendicular through points!!

Answers

Answer:

i think y=0

Step-by-step explanation:

Meg places a tomato plant in her garden She adds a pepper plant 6 feet to the left of the
tomato plant. Then she adds a pumpkin plant 5 feet to the right of the tomato plant. How
many feet apart are the pepper plant and pumpkin plant? Show an absolute value
expression that can be used to find your answer.

Answers

Answer:

what is the opinions for the question

Please give me 1 Integer, 1 negative fraction, 1 positive fraction, 1 negative decimal, and 1 positive decimal between -1 and 1.

Please answer ASAP. Need the answers quickly. Whoever answers correctly will get Brainliest.

Answers

Answer:

Step-by-step explanation:

Integer=8

negative fraction= -1/2

positive fraction= 1/9

negative decimal=-0.4

positive decimal= 0.8

You measure 22 watermelons' weights, and find they have a mean weight of 36 ounces. Assume the population standard deviation is 6.9 ounces. Based on this, construct a 95% confidence interval for the true population mean watermelon weight. Give your answers as decimals, to two places

Answers

Answer:

Step-by-step explanation:

Confidence interval formula is expressed as;

CI = xbar ±(z*s/√n)

xbar is the mean = 36

z is the z score at 95% CI = 1.96

s is the standard deviation = 6.9

n is the sample size = 22

Substitute

CI = 36 ±(1.96*6.9/√22)

CI = 36 ±(1.96*6.9/4.6904)

CI = 36 ±(1.96*1.4711)

CI = 36 ± 2.8833

CI = (36 - 2.8833, 36 + 2.8833)

CI = (33.1167, 38.8833)

Hence the 95% CI for the true population mean is 33.12<x<38.88

The mean income for people in a certain city (in thousands of dollars) is 37 with standard deviation 80 (thousands of dollars). A pollster draws a sample of 45 people to interview.
A. What is the probability that the mean income of the sample people is more than 24 (thousands of dollars)?
B. What is the probability that the sample mean income is between 41 and 45?
C) Find the 80th percentile of the sample mean.
D) Would it be unusual for the sample mean to be less than 38?
E) Do you think it would be unusual for an individual to have an income of less than 38? Explain.

Answers

Answer:

Step-by-step explanation:

The mean income for people in a certain city (in thousands of dollars) is 37 with standard deviation 80 (thousands of dollars). A pollster draws a sample of 45 people to interview.

A. What is the probability that the mean income of the sample people is more than 24 (thousands of dollars)?

B. What is the probability that the sample mean income is between 41 and 45?

C) Find the 80th percentile of the sample mean.

D) Would it be unusual for the sample mean to be less than 38?

E) Do you think it would be unusual for an individual to have an income of less than 38? Explain.

joseph is shopping for school supplies he can buy a box of 24 pens for $4.32 or a box of 36 pens for $5.76. which is a better buy

Answers

I would say it’s better to buy the 36 box pens. 24\4.32=5.6 on the other hand the box of 36 is 36/5.76=6.25

which image shows the opposite of the opposite of `2/3` on a vertical number line

Answers

Answer:

Step-by-step explanation:

only one with negative 1

What is the sum of F(X) and G(x) if F(x) = 8x ^ 3 + 7x ^ 2 - 11x + 20 and G(x) = - 5x ^ 3 - 4x ^ 2 - 17

Answers

Answer:

[tex]3x^{3}+3x^{2}-11x+3[/tex]

Step-by-step explanation:

f(x) + g(x) = [tex]8x^{3}+7x^{2}-11x+20-5x^{3}-4x^{2}-17[/tex]

To make this equation a little less long, we combine like terms

[tex](8-5)x^{3}+(7-4)x^{2}-11x+(20-17)[/tex]

or just

[tex]3x^{3}+3x^{2}-11x+3[/tex]

-6n + 3= 45
how do you solve this

Answers

Answer:

n= -7

Step-by-step explanation:

subtract 3 from both sides,-6n=42,divide both sides by -6

Answer:

[tex]\boxed{n = - 7}[/tex]

Step-by-step explanation:

[tex] \boxed{you \: solve \: by \: making \to n :} \\ the \: subjet \: of \: the \: equation \to \: \\ it \: means \: making \: \to \: n : to \: stand \: on \: its \: own \to \\ - 6n + 3 = 45 \\ - 6n = 45 - 3 \\ - 6 n= 42 \\ \frac{ - 6}{ - 6} n = - \frac{42}{6} \\ \boxed{n = - 7}[/tex]

Solve the inequalities

Answers

Answer:

x=3

Step-by-step explanation:

[tex]-15x+32=13\\-15x=13-32\\-15x=-45\\x=-45/-15\\x=3[/tex]

Step-by-step explanation:

To Solve This Equation You will need to

follow this;

Original Equation;

-15x+32=-13

•(Firstly you will Group Like Terms)

-15x=-13-32

•(After Grouping you will go ahead and simplify)

-15x=-13-32

(You will have to add the two negative numbers and note that negative plus negative is still negative even though there is no addition sign there but you'll add them because when there is two negatives without a multiplication or division or any other sign you have to add)

-15x=-13-32

-15x=-45

(Then you proceed to divide both sides by -15)

x=3

This is because -45 divided by -15 is positive 3

Positive 3 because the negative signs cancel each other out.

answer choices are
A B C D
if you could, please add an explanation.

Answers

Answer:

Step-by-step explanation:

Find an expression which represents the difference when (2 + 4y) is subtracted
from ( 8x + 3y) in simplest terms.

Answers

Answer:

Simplifying 6x * 3y * 9x2y4 Reorder the terms for easier multiplication: 6 * 3 * 9x * y * x2y4 ... When you enter an expression into the calculator, the calculator will simplify the ... For addition and subtraction, use the standard + and - symbols respectively.

Step-by-step explanation:

Please help me ! Today 11/6/2020 :(

Answers

i believe the answer is c, TSR

what is the sum of the first 30 multiplies of 3?
A.1200
B.1395
C.1500
D.1490

Answers

Answer:

Letter D. 1490

I hope you helped☜☆☞

fellow point stealers/hustlers rise up

Answers

Answer: I will help ppl if I know the answers but besides that I look for questions like this.

Step-by-step explanation:

which is greater [-3.25] or [4.25]

Answers

which is greater [-3.25] or [4.25]

Answer:

4.25

Step-by-step explanation:

The number is bigger in absolute form

Nine less than six times a number -15

Answers

Answer:

9-(6×X)=15

Step-by-step explanation:

hope this helsp

Answer:

x= -7.66

Step-by-step explanation:

Let the number be x

According to the question

9(6×x )= -15

9(6x)= -15

54×9x= -15

9x= -15-54

9x =-69

x= -69/9

x = -7.66

Enter the product. Use expanded form to help.
5 X 64
=

Answers

Answer:

Step-by-step explanation:

Multiplying In Expanded form;

We are multiplying ×64 in expanded form is;

In multiplying in expanded form you multiply them separately;

60 multiplied by 5 which is going to be; 300

4multiplied by 5 is going to be; 20

Then you add the products from multiplying the separate numbers which is;

300+20

=320

Which entry describes electromagnetic energy?

Answers

Answer:

energy D

Step-by-step explanation:

Find the measure of angle LMN
please help me!!

Answers

Its 125
It cant be 25 or 29 because the angle is clearly obtuse
And
Angle MPQ is the same as LMN
If you take 125 and subtract 50 from it (because you need to add 50 to 3x) you get 75
After that you need to divide 75 by 3 because 3 is multiplied by x
You should get 25
Therefore X=25
If X=25 then 5x is 125

Which value, when placed in the box, would result in a system of equations with infinitely many solutions? y = 2x – 5 2y – 4x =

Answers

Answer:

-10

Step-by-step explanation:

Answer:-10

Step-by-step explanation: trust

A group of friends were working on a student film. They spent $712 on costumes, which was 89% of their total budget. What was the total budget for their student film?

Answers

Answer:

800

Step-by-step explanation:

you divide 712 by .89

how do i work this out.
write 600 as the product of prime factors. Give your answer in index form

Answers

You can do it as 2•2•2•3•5•5 or you can do 2 to the third power, times three to the first power, times five to the second power.

1 pound of blueberries cost $2.75 yes or no

Answers

Answer:

Step-by-step explanation:

cause I don't really know

Dillon is packing equal quantities of pretzels and crackers for snacks. Dillon bags the pretzels in groups of 5 and the crackers in groups of 11. What is the smallest number of crackers that he can pack?

Answers

He can pack 2. In each group with 1 left over

In ΔHIJ, i = 53 cm, ∠I=120° and ∠J=30°. Find the length of j, to the nearest 10th of a centimeter.

Answers

Answer:

30.6

Step-by-step explanation:

The sine rule of trigonometry helps us to equate the side of the triangles to the angles of the triangles. The length of the side j is 30.6 cm.

What is Sine rule?

The sine rule of trigonometry helps us to equate the side of the triangles to the angles of the triangles. It is given by the formula,

[tex]\dfrac{Sin\ A}{\alpha} =\dfrac{Sin\ A}{\beta} =\dfrac{Sin\ A}{\gamma}[/tex]

where Sin A is the angle and α is the length of the side of the triangle opposite to angle A,

Sin B is the angle and β is the length of the side of the triangle opposite to angle B,

Sin C is the angle and γ is the length of the side of the triangle opposite to angle C.

Given the length of i is 53 cm, while the measure of the ∠I is 120°. Also, the measure of ∠J is 30°. Therefore, the length of the side j is,

[tex]\dfrac{Sin\ A}{\alpha} =\dfrac{Sin\ A}{\beta} =\dfrac{Sin\ A}{\gamma}\\\\\dfrac{Sin\ I}{i} =\dfrac{Sin\ J}{j} \\\\\dfrac{Sin\ 120^o}{53} =\dfrac{Sin\ 30^o}{j} \\\\j = \dfrac{Sin\ 30^o \times 53}{Sin\ 120^o}\\\\j = 30.5995 \approx 30.6\rm\ cm[/tex]

Hence, the length of the side j is 30.6 cm.

Learn more about Sine Rule:

https://brainly.com/question/17289163

#SPJ2

A right triangle has side 9 and hypotenuse 15. Use the Pythagorean Theorem to find the length of the third side.
Provide your answer below:

Answers

Answer:

Step-by-step explanation:

Pythogorean Theorem:

a squared + b squared = c squared

9 squared or 81 + ? squared = 15 squared or 225

Inverse Pythagorean Theorem:

c squared - a squared = b squared

225 - 81 = 144

sqrt (144) = 12

12 = b

Hope this helps! Good luck!

Other Questions

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Solve: 2x + 15 = -3x Please help me out! I need to solve for X

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Solve: 2x + 15 = -3x
Please help me out! I need to solve for X