Solve the equation 6x+7x−3x=13+7. Be sure to check your proposed solution by substituting it for the variable in the original equation.

Answers

Answer 1

Answer:

x=2

Step-by-step explanation:

6x+7x−3x=13+7

10x=20

x=20/10

x=2


Related Questions

A triangle with vertices at point A(-2,1), B(1,5), and C(2,3) calculate the coordinates of the mid point of AB​

Answers

Answer:  (-0.5, 3)

=======================================================

Explanation:

Add up the x coordinates of A and B

-2+1 = -1

Then cut that result in half

-1/2 = -0.5

This is the x coordinate of the midpoint.

Repeat these steps for the y coordinates: (1+5)/2 = 6/2 = 3

The midpoint of segment AB is located at (-0.5, 3)

James was watching Cartoon Cartoon's! He watch 7 each day. If he keeps this up for 10 days how many Cartoon Cartoon's will he watch in all?

Answers

Answer:

70

Step-by-step explanation:

7 x 10 = 70

integration of sin3xsinx

Answers

Recall that

cos(x + y) = cos(x) cos(y) - sin(x) sin(y)

cos(x - y) = cos(x) cos(y) + sin(x) sin(y)

If you subtract the first equation from the second one, you end up with

cos(x - y) - cos(x + y) = 2 sin(x) sin(y)

so that

sin(3x) sin(x) = 1/2 (cos(3x - x) - cos(3x + x)) = 1/2 (cos(2x) - cos(4x))

Then in the integral,

[tex]\displaystyle \int \sin(3x)\sin(x)\,\mathrm dx = \frac12 \int(\cos(2x)-\cos(4x))\,\mathrm dx \\\\ = \frac12 \left(\frac12 \sin(2x) - \frac14 \sin(4x)\right) + C \\\\ = \boxed{\frac14 \sin(2x) - \frac18 \sin(4x) + C}[/tex]

what is 6 1/4 divided by 5 evenly

Answers

Answer:

1 1/4

Step-by-step explanation:

here is the exact form if your looking for that. :)

5/4

and heres the decimal form if you are looking for that :>

1.25

What two numbers can be used for the denominators of 5/8 and five/4

Answers

equal denominators can be 8, 16, 24, etc

but for this one, you can use 8.

A bag contains 7 red marbles, 6 white marbles, and 8 blue marbles. You draw 4 marbles out at random,
without replacement. Find the following probabilities and round to 4 decimal places.
a. The probability that all the marbles are red is
b. The probability that none of the marbles are red is

Answers

The answer should be b

Suppose your statistics professor reports test grades as​ z-scores, and you got a score of 2.25 on an exam.
​a) Write a sentence explaining what that means.
​b) Your friend got a​ z-score of −1. If the grades satisfy the Nearly Normal​ Condition, about what percent of the class scored lower than your​ friend?

Answers

This a similar question. So go through and answer your please.

What number should go in the space?
Multiplying by 1.75 is the same as increasing by _____%.

Answers

Answer:75%

Step-by-step explanation:

Is "369" from ( Digit or Number or Numeral) ?? ​

Answers

Answer:

Number

Step-by-step explanation:

Answer:

Digit is single number

so answer is numeral

Step-by-step explanation:

If you like my answer than please mark me brainliest thanks

What is the complementary angle of 60°.

Answers

Answer:

30°

Step-by-step explanation:

The complementary angle of 60° is 30° complementary angles are angles whose measures sum to 90�,

so complementary angles of 60�is 30�

Answer:

30°

Step-by-step explanation:

90-60=30 the complementary angle of 60° is 30°

what is 2 times negative 4/5

Answers

Answer: -8/5

Explanation:
2 can be changed as 2/1
2/1 x -4/5
Multiply 2 first number and then 2 second numbers.

2 x -4 = -8
1 x 5 = 5

-8/5

PLEASE MARK BRAINIEST :))

Write the slope-intercept form of the equation of each line.​

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

The given equation can be written as :

[tex]x - 2y = 2[/tex]

[tex] - 2y = 2 - x[/tex]

[tex] - y = \dfrac{2 - x}{2} [/tex]

[tex]y = - \bigg( \dfrac{2 - x}{2} \bigg)[/tex]

[tex]y = \dfrac{x - 2}{2} [/tex]

[tex]y = \dfrac{x}{2} - 1[/tex]

Therefore , the slope intercept form for above equation is :

[tex]\boxed{ \boxed{y = \frac{x}{2} - 1 }}[/tex]

pls help me adwadawd

Answers

9514 1404 393

Answer:

  15.5 lb

Step-by-step explanation:

The average weight of the top 5 fish was 12.9 lb:

  (? +14.4 +12.8 +11.6 +10.2)/5 = 12.9

  ? +49 = 64.5 . . . . . . multiply by 5

  ? = 15.5 . . . . . . . . subtract 49

The weight of the heaviest fish was 15.5 lb.

how do I add odd number fractions for example 5/9 and 3/5?​

Answers

you need to find the least common multiple of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add and simplify. so the answer to your question would be 52/45.
i hope this helps!

Arnold Ackerman deposits $870 in a savings account at Home City Bank. The account pays an annual interest rate of 7 percent. He makes no other deposits or withdrawals. After three months the interest is calculated. How much simple interest does his money earn?

Answers

Answer: $15.23

Step-by-step explanation:

$870 x ((7% / 12 months)  x 3 months)

= $870 x 0.005833 x 3

= $15.23

Multiply (-2) (-2)(9)

Answers

Answer:

-2×(-2)×9

= 4×9

= 36

Step-by-step explanation:

lf you like my answer than please mark me brainliest thanks

Answer:

OPTION ( A) 36

Step-by-step explanation:

(-2) (-2)(9)=36

HOPE IT HELPS

How do you factor by grouping if the question is 2p^3+5p^2+6p+15?​

Answers

Answer:

(2p + 5)(p² + 3)

Step-by-step explanation:

2p³ + 5p² + 6p + 15

take out factor p²

p² × (2p + 5) + 6p + 15

p² × (2p + 5) + 3 (2p + 5)

= (2p + 5)(p² + 3)

Find the coordinates of the point.

The point is seven units to the left of the y-axis and two units below the x-axis.

Answers

Answer:

(-7, -2)

Step-by-step explanation:

If you look on a graph and travel 7 units to the left of the y axis, you are traveling in the x direction (along the x axis). Since you are 7 units to the left, you are at -7 in the x direction.

If you look on a graph and travel 2 units down below the x axis, you are traveling in the y direction (along the y axis). Since you are 2 units down, you are at -2 in the y direction.

Coordinates are listed in (x,y) format, so it would be (-7, -2)

21 less than tree-fifths of a number

Answers

(3/5)x - 21

hope this helps :)

PLZ HELP 10 POINTS!!

Answers

Answer:

i think its not equivalent but NOT sure

Step-by-step explanation:

Please answer question c

Answers

Answer:

the mean number of magazine readers is 200

The answer to (C) in 200

What is the 5th term of the sequence defined by f(n) = 3(n-3)

Answers

Answer:

f(n) = 3(n-3).

f(5)=3(5-3)

f(5)=6

The number 51 is decreased to 26. What is the percentage by which the number was decreased, to the nearest tenth of a percent?

Answers

It was decreased by 49%. pls mark me as brainliest!

Answer:

49.02%

Step-by-step explanation:

Difference:

= 51-26

= 25

Decreased percentage

= 25/51 * 100%

= 49.02

In question 12 write a valid conclusion for the given set of premises or indicate that no conclusion is possible.

12. If it doesn't rain, then Kristen will go swimming this weekend.
Kristen does not go swimming this weekend.

Answers

Answer: It rained.

Step-by-step explanation: Based off the information given, you can safely assume the reason she didn’t go swimming was because it was raining.

Some people advise that in very cold weather you should keep the gas tank in your car more than half full Louis car had 6.9 gallons in a 15 gallon tank on the coldest day of the year blue filled the tank with gas that cost 3.90 per gallon how much did we spend on gas

Answers

15-6.9=8.1
8.1 x 3.9= 31.59
$31.59 is your answer
hope this helps :)

The sum of two nunbers is 80

Answers

Answer:

x + (80-x) = 80

Hope this helps

Let f (x) = log2(x) + 2 and g(x) = log2(x3) – 4.

Part A: If h(x) = f (x) + g(x), solve for h(x) in simplest form. (4 points)

Part B: Determine the solution to the system of nonlinear equations. (6 points)

Answers

The function h(x) in its simplest form is [tex]h(x) = 4log_2(x)- 2[/tex]

The functions are given as:

[tex]f(x) = log_2(x) + 2[/tex]

[tex]g(x) = log_2(x^3) - 4[/tex]

(a) Function h(x)

This is given as:

[tex]h(x) = f(x) + g(x)[/tex]

So, we have:

[tex]h(x) = log_2(x) + 2 + log_2(x^3) - 4[/tex]

Collect like terns

[tex]h(x) = log_2(x) + log_2(x^3)+ 2 - 4[/tex]

[tex]h(x) = log_2(x) + log_2(x^3)- 2[/tex]

Apply law of logarithm

[tex]h(x) = log_2(x \times x^3)- 2[/tex]

[tex]h(x) = log_2(x^4)- 2[/tex]

Apply law of logarithm

[tex]h(x) = 4log_2(x)- 2[/tex]

Hence, function h(x) in its simplest form is [tex]h(x) = 4log_2(x)- 2[/tex]

(b) System of nonlinear equations

The equations are not given.

So, the question cannot be solved

Read more about composite functions at:

https://brainly.com/question/10687170

Help help please help help me help help please please let me know please please help help please help me help help please help help me help help

Answers

Answer:

1) A=XB

2) (A-C)/B

Step-by-step explanation:

1) to keep A alone convert B to the other side with multiplication A=XB

2) To keep X alone. First C goes to the other side be minus A-C=BX

then B goes the other side with division (A-C)/B=X

The number of girls int the choir is 4 times the number of boys in the choir. The total number of students in the choir is 60. How many girls are in the choir?

Answers

Answer:

15 boys in the choir

Step-by-step explanation:

60/4

4 x 15 = 60

Answer:

48

Step-by-step explanation:

First, make up some variables to represent the number of Girls and Boys in the choir.  

B = number of boys

G = number of girls

You know that there are 4 times as many girls in the choir as boys.  Therefore, the equation you can write is:

If you cross-multiply, then you get the simplified equation:

G = 4B

Intuitively this makes sense since if you multiplied the number of boys in the class by 4, that would be equal to the number of girls you have.

Now, we know that the total class size is 60. So girls plus boys equals 60:

G+B = 60

To solve the equation, replace the G in this equation with the replacement you found before, 4B.

G + B = 60 -->

4B + B = 60 -->

5B = 60 -->

B = 12

However, you are trying to find the number of girls, so plug the answer back into your equation.

G + B = 60 -->

G + 12 = 60 -->

G + 12 -12 = 60 - 12 -->

G = 48

The number of girls you have is 48.

Tell whether each equation is True or False.
-4+ (-7) = 11
True
Wha
first
False
a.
b. 5 + (-4) = -5 +4
True
False
True
False
C.
-10 + 7 = 7 - 10
True
False
d. 14+ (-3) = 10 + 1
5 Aduck is sitting on a ledge that is 11 feet above the

Answers

Answer:

false, false, true. This is my answer for the three questions.

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