7(5x + 7) = 399 can someone tell me what is x with steps please and thank you

Answers

Answer 1

Answer:

x = 10

Step-by-step explanation:

[tex]7(5x+7)=399\\\\35x+49=399\\\\35x+49-49=399-49\\\\35x=350\\\\\frac{35x=350}{35}\\\\ \boxed{x=10}[/tex]

Hope this helps.


Related Questions

Which decimal is equivalent to 1/3​

Answers

Answer:

0.3 with the 3 being repeated

Ed wants to bicycle at least 75 miles this week. The inequality 11 + 4b > 75 can be used to find the average number of miles he should bike on his remaining 4 bike rides this week.

Sorry for the inconvenience, but I need this done and I need help. This is the last question of this quiz. Please Help.​

Answers

Answer: Ed should bike at least more than 16 miles

Step-by-step explanation:

11 + 4b > 75

4b > 64

b > 16

Ed should bike 16 miles

pls help with math question !
thank you !!

Answers

Answer:

42 degrees

Step-by-step explanation:

All the interior angles in a triangle add up to 180 degrees. Knowing this, we can construct the following equation:

[tex]180=84+54+a\\180=138+a[/tex]

Subtract both sides by 138

[tex]180-138=138+a-138\\42=a[/tex]

I hope this helps!

Please help i dont know if this is right? ​

Answers

"just do it"- adidas

just yolo it

in these equations a represents the vertical stretch or compression. A -a inverts the graph. h represents the horizontal transformation x-h translates to the right, x+k translates to the left. K translates vertically + up - down. Your B & C answers are correct. You need to fix your A & D answers.

A rectangular parking lot measures 40 m x 30 m.
How much distance can you save by cutting
across the parking lot instead of walking all the
way around it from A to C?

This is Grade 8 Math Pythagorean theorem

Answers

I believe it’s 90 meters, but I don’t know what points are labeled A and C so I’m not sure.

10^6 times 10^5 as a power of ten - thanks !

Answers

Answer:

one hundred billion

Step-by-step explanation:

10^6 x 10^5 = 10^11

10^11 = 100,000,000,000 or  one hundred billion

I hope that's what you meant ^-^

PLZ HELP IF CORRECT ILL GIVE U BRAINLIEST

Answers

Answer:

32.25

Step-by-step explanation:

0/1 For positive integer n, n? = n! · (n − 1)! · … · 1! And n# = n? · (n − 1)? · … · 1?. What is the value of 4# · 3# · 2# · 1#?

Answers

Answer:

331776

Step-by-step explanation:

Since n? = n! · (n − 1)! · … · 1! And n# = n? · (n − 1)? · … · 1?

Then 4# = 4? · (4 − 1)? · (4 − 2)?· 1?

= 4? · 3? · 2?· 1?

Now, n? = n! · (n − 1)! · … · 1!

So, 4? = 4! · (4 − 1)! · (4 − 2)! · 1! = 4! · 3! · 2! · 1! = 288

Thus, 3? = 3! · (3 − 1)! · 1! = 3! · 2! · 1! = 12

Also, 2? = 2! · (2 − 1)! · 1! = 2! · 1! · 1! = 2

and 1? = 1! · (1 − 1)! · 1! = 1! · 0! · 1! = 1

So, 4# = 4? · 3? · 2?· 1? = 288 × 12 × 2 × 1 = 6912

We now find 3#

3# = 3? · (3 − 1)? · 1? = 3? · 2?· 1?

Now, n? = n! · (n − 1)! · … · 1!

So, 3? = 3! · (3 − 1)! · 1! = 3! · 2! · 1! = 12

Thus, 2? = 2! · (2 − 1)! · 1! = 2! · 1! · 1! = 2

and, 1? = 1! · (1 − 1)! · 1! = 1! · 0! · 1! = 1

So, 3# = 3? · 2?· 1? = 12 × 2 × 1 = 24

We now find 2#

2# = 2? · (2 − 1)? · 1? = 2? · 1?· 1?

Now, n? = n! · (n − 1)! · … · 1!

So, 2? = 2! · (2 − 1)! · 1! = 2! · 1! · 1! = 2

1? = 1! · (1 − 1)! · 1! = 1! · 0! · 1! = 1

So, 2# = 2?· 1? = 2 × 1 = 2

We now find 1#

1# = 1? · 1? = 1? · 1?

Now, n? = n! · (n − 1)! · … · 1!

So, 1? = 1! · (1 − 1)! · 1! = 1! · 0! · 1! = 1

And, 1# = 1? · 1? = 1 × 1 = 1

So,  4# · 3# · 2# · 1#? =  6912 · 24 · 2 · 1? = 331776

6
7
8
9
10
What is the simplified form of the following expression?
7(V2x) - 3(V16x)-3(Vox
0 -5(2x)
o 2x-6(K)
0 -(/2X) - 6(V)

Answers

Answer:

is there a pic u could show?

Step-by-step explanation:

Find the area of four walls of a room (Assume that there are no doors or windows) if its length 12 m., breadth 10 m. and height 7.5 m. ?​

Answers

Answer:

Refer to the attached file

Hope it helps..

Have a great day : )

Calculate the commission amount for the sale.

7% commission on a $2,560 sale​

Answers

Answer:

$179.2

Step-by-step explanation:

7% of 2,560 is 179.2


What is the perimeter of ABCD?
14 units
38 units
44 units
49 units
ANSWER: C) 44 units

Answers

It’s 38 u it’s bc Ik it is

f (x) =x2 + 10x + 24.

Answers

Answer:

(-5,-1)

explanation

A 8 foot length of 4 inch wide crown molding costs $15. How much will it cost to buy 38 feet of crown molding?

Answers

Answer:

$71.25

Step-by-step explanation:

cost of one feet of molding = $15/8 = $1.875

Cost of  38 feet of crown molding = $1.875 x 38 = $71.25

I’m giving 30 points please help

Answers

Answer:

Triangle A

Step-by-step explanation:

Because in the picture it shows the grid and if you look closely you can see the points on the x and y axis, (3,2) (4,7) and (5,6) are the three points formed to make triangle A.

ommon Unit Assessment (MC) I 4 of 12
Christopher determines the system of s(x) and (x) has only one solution. Which system is Christopher solving?
A
X +3
s(x) =
X-5
+1 and t(x) = x +3 +2
ОВ.
s(x) = x2
and t(x) = In(x +7)+4
C. s(x) = 2x42 -5 and t(x) = -x +31+2
OD. $(x) = (x +3 -1 and t(x) = 2x - 5

Answers

Answer:

D

Step-by-step explanation:

I had the same question and I got this right

Christopher is solving a system of equations that has one solution and can be seen in Option C.

What is a system of equations?

A system of equations is two or more equations that can be solved together to get a unique solution. In this situation, the power of the equation must be in one degree.

A quadratic equation is the second-order degree algebraic expression in a variable.

s(x) = 2x42 -5 and t(x) = -x +31+2

However, if their power is not in one degree, the quadratic equation produces two solutions.

From the given options, we can see that only option c is not a quadratic equation, Hence, it is the right answer.

Learn more about systems of equations here;

brainly.com/question/14323743

GIVING BRAINIEST IF CORRECT!!

Amanda slept for 1/3 of the day. She played with her friends for 1/5 of the day. She spent the rest of the day working on a school project. What fraction of the day did she spend working on her project?

Answers

Answer:

She spent 7/15 of the day working on her project.

Step-by-step explanation:

Well we cant get a clear answer with the fractions 1/3 and 1/5, so we are going to have to turn them into equivalent fractions.

3 and 5 both have 15 LCD so:

1/3 x 5/5 = 5/15

1/5 x 3/3 = 3/15

5/15 + 3/15 = 8/15

15/15 - 8/15 = 7/15

She spent 7/15 of the day working on her project.

Hopefully this helps :3 Sorry if wrong :( Plz mark brainiest if correct :D Your bootiful/handsome! Have a great day luv <3

-Bee~

the price of one gallon of gas was $2.59 in 2007. the average price of one gallon of gas this month is $3.69. what is the percent of change?

Answers

Answer:

42.471% increase

Step-by-step explanation:

In ΔGHI, the measure of ∠I=90°, the measure of ∠G=76°, and IG = 6.2 feet. Find the length of HI to the nearest tenth of a foot.

Answers

Answer: 24.9

Step-by-step explanation:

6.2 tan(76) = 24.86

Answer:

the answer is 24.9

Step-by-step explanation:

Find the discriminant. (Must Show Work)

-9m^2+m-7=0

Answers

Answer:

-251

Step-by-step explanation:

the discriminant .b^2-4ac

=1-4×(-9)×(-7)

=1-252=-251

What is the domain of y = log5^x
all real numbers less than 0
all real numbers greater than 0
all real numbers not equal to 0
all real numbers

Answers

Answer:

The answer is all real numbers

Answer:b

Step-by-step explanation:

find the value of given expression

[tex] \sqrt{230 - 5} [/tex]

Answers

Answer:

i think it is 345 but not sure

Step-by-step explanation:

Enter the value for that makes the given equation true.

20−5(6+4)=4−6

Answers

Answer:

hi, there is no variable

DUE ASAP PLS
HELP

5. Find BC.
5. In Triangle ABC, angle A is a right angle and angle B= 60. If AB= 20 ft, find BC. If necessary, round your answer to the
nearest tenth.
A) 10ft
B) 40ft
C) 20 √ 3 ft
D) 40 √ 3/3 ft

Answers

I think it’s 40 foot

Which of these is a Pythagorean Triple?
1,1 square root of 2.
1, square root of 3, 2
11, 50, 51
20, 21, 29​

Answers

Answer:

1, 1, sqrt of 2

Are the two flags similar? If so, which triangle similarity theorem did you use to make your conclusion?

Answers

Answer:

NO

Step-by-step explanation:

I THINK THE RIGHT ANSWER IS RHS THEOREM.

Neil has been running a tutoring business since 2005. He charges a monthly fee for weekly tutoring sessions and a phone help line. Each year, he has increased his fee by the same amount. The table shows what Neil charged each customer for two given years of his business:


Year Annual Tutoring Fee
2005 $1200
2008 $1350


A. What is the rate of change and initial value for Neil’s business? How do you know?
B. Write an equation in slope-intercept form to represent the fees that Neil charges each year.

Answers

Answer:

The answer is 2550

Step-by-step explanation:

Add 1200 and 1350 it'll give you 2550

Answer:

250

2550

Step-by-step explanation:

sorry if wrong but I think

A=250

B=2550

Fidel has a rare coin worth $550. Each decade, the coin's value increases by %10
Which kind of function best models the relationship between time and the coin's value?

Answers

Answer Answer Answer Answer

Answer: Exponential

Step-by-step explanation: I did it in khan

What is the distance between the points (-4,5) and (8,9)​

Answers

I hope this is what you were looking for.

18 entre 12 (división) Porfa respondan, mi ama me pega con la chancla si no lo hago,, es lo único que me faltam

Answers

Answer:

Step-by-step explanation:

18 dividido por 12 es 1.5 , esto se puede probar haciendo division larga o multiplicando 1.5 por 12

1.5 * 12 = 18

Espero que te haya ayudado la respuesta y que ahores el chancletazo.

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