Mathematics High School

Solye for x
7(x + 1) = 21

Answers

Answer 1

Answer:

x = 2

Step-by-step explanation:

Given

7(x + 1) = 21 ( divide both sides by 7 )

x + 1 = 3 ( subtract 1 from both sides )

x = 2

Answer 2

Answer:

x=2

Step-by-step explanation:

7×(x +1)=21

7x +7 =21

7x =21 - 7

7x =14

x=14 :7

x=2

7 ×(2 +1)=21

7 ×3 =21

21 =21

Related Questions

what expressions have a value of 16/81 ​

Answers

Answer:

(2/3)⁴, (4/9)² apply to 16/81

Step-by-step explanation:

16/81

8 * 2/27 * 3

4 * 2 * 2/9 * 3 * 3

2 * 2 * 2 * 2/3 * 3 * 3 * 3

Mark's computer has 24 GB of total storage space. A gigabyte (GB) of computer storage space is 230 bytes. How many bytes of total storage space does the computer have? Express the total number of bytes in exponential form.

Answers

Answer:

240gb

Step-by-step explanation:

Whats 1+1 ? I need help ASAP im rlly confused

Answers

Answer:

2

Step-by-step explanation:

hold one finger up, and add another, then count how many fingers you have

Answer:

2

Step-by-step explanation:

Charmaine is on the swim team. Each week she swims a total of 6,000 meters. How many kilometers does she swim each week?

Answers

Answer:

1000m = 1 km

:. 6000m=6000/1000 =6km ans

hope it helps

plz mark as brainliest.

6km ans i did this and got it correct

for rectangular prism rewrite the formula to find the length in terms of area, width, and height

Pls help T-T. Im offering 38 points for this question

Answers

The formula to find the volume is [ v = whl ]

v = volume

w = width

h = height

l = length

We need to solve for l.

v = wdl

Divide wd to both sides

v/wd = l

Best of Luck!

(+2) – (-6) what's the answer to this please write it out​

Answers

Answer:

8

Step-by-step explanation:

+2-(-6)=2+6

the two negatives cancel each other out

2+6=8

Answer:

8

Step-by-step explanation:

2- -6

change subtraction sign to addition

2+-6

change negative sign to positive

2+6

solve

8

Dylan buys 3.2 pounds of grapes for $2.56. What is the price per pound of the grape.

Answers

Answer:

$1.25

Step-by-step explanation:

3.2/2.56=1.25

Answer:

1.25

Step-by-step explanation:

3.2/2.56=1.25 i know because i am the future

What is the solution of the inequality ⅚ x - 3 < 2 ?

Answers

the answer to the inequality is..

Inequality Form: x < 6

Interval Notation: (-∞,6)

Find the missing term in the pattern. 2,8, 27, 85, 260, ___, 2365

Answers

Answer:

260 x 3 + 6 = 786

Step-by-step explanation:

2 x 3 + 2 = 8

8 x 3 + 3 = 27

27 x 3 + 4 = 85

85 x 3 + 5 = 260

and so on..........

r-85=114 what is the awnser

Answers

Answer:

[tex]r=199[/tex]

Step-by-step explanation:

hopefully that was the answer you were looking for

Answer:

1.34117647059

Step-by-step explanation:

114 divided by 85 =1.34117647059

hope this helps

Y = Mx + 5 what is the value of m

Answers

Answer:

Its the slope of the function

Step-by-step explanation:

Write an equation for the description
The sum of 13 and a number x is equal to 15.

Answers

I think it’s 13+x=15

Monkeys at a zoo eat 4 cups of food everyday elephants eat 76 times as much! Which equation and solution represent the number of cups of food each day?

Answers

Answer:

304

Step-by-step explanation:

4x76=304 mark as brainlist.

!!30 POINTS!!
Name the ray that is opposite RS

Answers

Answer:

RP is the correct amswer.

Step-by-step explanation:

please mark me as a brainlist...

Professor Slughorn has created and sold three different magical potions where if a person drinks them, he or she magically can fly, breathe underwater, or read minds. He sold ten more flying potions than mind reading potions. The number of breathing underwater potions he counted was two more than three times the number of mind reading potions. If he sold a total number of 102 potions, how many were for breathing underwater?

Answers

Answer:

56 underwater breathing potions

Explanation:

Create variables to represent the different potions

-  flying = f   underwater breathing = b   mind reading = m

Make equations to represent all of the information you've been given.

- The number of flying potions is ten more than the number of mind reading potions. f = r + 10

- The number of water breathing potions is two more than three times the number of mind reading potions. b = 3r + 2

- The total number of potions is 102. f+b+r = 102

Substitute the variable in your equation for the total number of potions.

102 = (r +10) + (3r + 2) + r = 102

Combine like terms.

102 = 5r + 12

Solve for r.

90 = 5r

18 = r

You have to find the number of underwater breathing potions, b. Go back the equation for b and substitute 18 for r.

b = 3r + 2

b = 3(18) + 2

b = 56

So, your total number of underwater breathing potions is 56.

Use the Distributive Property to simplify 8(y+3)

Answers

[tex]8y+24[/tex]. you multiply all of the values in the parentesys.

Answer:

[tex]\huge\boxed{\sf{8y+24}}[/tex]

Step-by-step explanation:

Hello.

Let's recall that the Distributive Property states that

a(b+c)=ab+ac

Using the formula, let's simplify:

8(y+3)

Multiply 8 times y and 8 times 3 and add the products:

8y

24

Add:

8y+24

And we're done!

I hope it helps & have an outstanding day!

~ST2710 :)

Which postulate does this diagram demonstrate?

Answers

Two lines intersect at one point

How does the outlier affect the standard deviation in the following set of data?
9 9 10 10 12 15 16 16 17 17 17 20 23 28
5.32
Removing the outlier lowers the standard deviation by 1.09
No outlier
4.23

Answers

Answer:

Removing the outlier lowers the standard deviation by 1.09

Step-by-step explanation:

Find the standard deviation of the data WITHOUT the outlier first.

If you don't know how to do standard deviation, here are the steps:

1. Find the mean

2. Subtract the mean by the data set values

3. Square the differences

4. Add the squared numbers together and divide by the number of data set values

5. What you have now is the variance, and all you have to do now is square the variance and you have the standard deviation

Repeat this, but WITH the outlier this time.

Final step, just subtract the smaller number (answer you got from the data with the outlier) by the greater number (answer you got from the data without the outlier) and you have your answer: 1.09!

Anna's pulse rate is 30% higher than its normal rate of 70bpm. What is her pulse rate?

Answers

Answer:

  91 bpm

Step-by-step explanation:

  (70 bpm)(1 +30%) = 70·1.30 bpm = 91 bpm

Anna's pulse rate is 91 bpm.

can anyone help me with the pictures below? Will mark brainliest!

Answers

Answer:

a is, A to c, B E to f, c is g to h I think? 2 a is no, cause it doesn't add up to 90, b is no for the same reason and c is no.

Step-by-step explanation:

i hope I helped I'm iffy on A)c

Answer:

In a. hypotenuse is AC

In b. hypotenuse is EF

In c. hypotenuse is HG

2.

a. is right triangle

b. is not right triangle

c. is right triangle

Step-by-step explanation:

in first question we have to find the hypotenuse and hypotenuse is always the side opposite to 90 degree angle

in second question we have to square each of the sides if sum of two squared side equal to the third one that triangle is right angle triangle

whats a+d+k+8? i need a answer ASAP

Answers

since the variables are just variables and the value of them is unknown, i’m pretty the answer is 8adk, because 8 is the only number in this problem and you can’t find the sum of a letter and a number

What happens to the aciditiy of soulutuns A and B after dry ice is added

Answers

The pH of solution A decreases, and the pH of solution B decreases.

Given that f(x) = 5x^2-3x+7 and f(g(x))=(5x^4)/9 + (17x^2)/3 + 21. Find all possible values for the sum of the coefficients in the quadratic function g(x).

Answers

steps

(x) = 5x^2-3x+7

refine

x=5x^2-3x+7

Switch sides

5x^2-3x+7-x=x-x

Subtract x from both sides

5x^2-4x+7=0

Solve with the quadratic formula

PLEASE HELP ASAP!!!!!

Answers

Answer:

D

Step-by-step explanation:

The correct answer will be D

BRUH SOMEONE HELP ME

also explain:)

Answers

Answer:

[tex]x=7[/tex]

Step-by-step explanation:

So we have the function:

[tex]w(x)=3x-7[/tex]

And we want to find x when w(x) is 14.

So, substitute 14 for w(x):

[tex]14=3x-7[/tex]

Add 7 to both sides. The right cancels:

[tex]21=3x[/tex]

Divide both sides by 3:

[tex]x=7[/tex]

So, the value of x is 7.

The correct answer is the first option.

I can't find the value of Y​

Answers

114 = 19y

This is true because they are vertical angles. Now, let's divide both sides by 19

6 = y

Answer:

The value of y° must be 6°

Step-by-step explanation:

19y° = 114°{being vertically opposite angle}

or, y° = 114°/19

or, y° = 6°

Gaston claims to eat 6 dozen eggs every morning. If the hens in his town lay 2 eggs per day, what is equation that represents the relationship between the total number of eggs Gaston eats each morning and the number of hens (h) needed to support his diet?

Answers

Answer:

72=2h

Step-by-step explanation:

6x12=72

are y=2/3x-3 y=-3/2x+2 perpendicular? I know they intersect but i need to know if they’re perpendicular to each other. Please help ASAP!!

Answers

Answer:

yes exact oposites almost

Step-by-step explanation:

Answer:

Yes.

Step-by-step explanation:

If a function has a counterpart with the numerator and denominator switched multiplied by -1, then it is perpendicular. Also, here's image proof.

HELO ME PLEASE I NEED THIS NOW

Answers

Answer:

172.05

Step-by-step explanation:

formula to find regular pentagon=1/4 root 5(5+2root5)a^2

Simplify the expression: 2( 5 t + J) + 3( 2t + 4 J )

Answers

Answer:

16t + 14J

Step-by-step explanation:

1) First, you have to multiply the numbers

New Expression: 10t + 2J + 6t + 12J

2) Now, you have to find the like terms and add them together

New Expression: 16t + 14J

Hope this helps!

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