7x + 15 - 9x = 5 plz help

Answers

Answer 1

Answer:

x =5

Step-by-step explanation:

[tex]7x + 15 - 9x = 5\\\\\mathrm{Group\:like\:terms}\\7x-9x+15=5\\\\\mathrm{Add\:similar\:elements:}\:7x-9x=-2x\\-2x+15=5\\\\\mathrm{Subtract\:}15\mathrm{\:from\:both\:sides}\\-2x+15-15=5-15\\\\Simplify\\-2x=-10\\\\\mathrm{Divide\:both\:sides\:by\:}-2\\\frac{-2x}{-2}=\frac{-10}{-2}\\\\Simplify\\x = 5[/tex]


Related Questions

The largest perfect square factor of 252 is _____

Answers

Answer:

18

Step-by-step explanation:

252 is a composite number. The exponents in the prime factorization are 2, 2, and 1. Adding one to each and multiplying we get (2 + 1)(2 + 1)(1 + 1) = 3 x 3 x 2 = 18. Therefore 252 has 18 factors.

3x + 2(4x - 4) = 3
What’s the answer?

Answers

3x+2(4x-4)=3 - remove parentheses
3x+ 8x-8=3 - collect like terms
11x- 8 =3 - move the constant to the right
11x=3+8 - calculate
11x = 11 - divide both sides by 11
x= 1

which value is a solution to the inequality 9-y>12?

Answers

Hey there!

[tex]Answer:\boxed{y<-3}[/tex]

[tex]Explanation:[/tex]

[tex]9-y>12[/tex] Inequality

Let's start by simplifying both sides of the inequality.

[tex]-y+9>12[/tex]

Now subtract 9 from both sides.

[tex]-y+9-9>12-9\\-y>3[/tex]

Now divide both sides by -1.

[tex]\frac{-y}{-1}>\frac{3}{-1}[/tex]

[tex]y<-3[/tex]

Hope this helps!

What is the value of the 3 in 513

Answers

Answer:

3

Step-by-step explanation:

513 = 500 + 10 + 3

The 5 is worth 500.

The 1 is worth 10.

And the 3 is worth 3 !

Answer:

The value of 3 in 513 is the ones place.

Step-by-step explanation:

On a number line, show all points whose coordinates satisfy the following inequalities: |x−20|<5

Answers

Answer:

On the number line integers from 16 to 24 is the answer.

Answer:

Step-by-step explanation:

The frequency (f) of the note produced by striking a pipe of length (L) and radius (r) is given by f = 2r + c over 2L where c is the speed of sound, which is mately 13,500 in./sec. The following table shows some frequencies and related pipe lengths for PVC pipe with a radius of 1 in. What length pipe should be used in order to create the lowest note on an 88-key piano (an A), which has a frequency of 27.5 hertz?​

Answers

Now the aim of the above discussion is to internalize the mathematical relationships for open-end air columns in order to perform calculations predicting the length of air column required to produce a given natural frequency. And conversely, calculations can be performed to predict the natural frequencies produced by a known length of air column. Each of these calculations requires knowledge of the speed of a wave in air (which is approximately 340 m/s at room temperatures). The graphic below depicts the relationships between the key variables in such calculations. These relationships will be used to assist in the solution to problems involving standing waves in musical instruments.

Need help on this question

Answers

Answer:

angle 4

Step-by-step explanation:

Simplify the following expression.
(38x+61y)-(3x-11y)


the answer is 35x+72y for plato im only putting this question up to help people with the same problem i had, ill give brainliest out to the first person who works this out and gives a intelligent response.

Answers

Answer:

35x+72y

Step-by-step explanation:

well you are subtracting the terms 3x and -11y from the terms 38x and 61y. so to start you multiply 3x and -11 by negative one to get rid of the parentheses. you then you combine like terms.

Catherine wants to pass year for Ms. Ford's class and all she has left is to take the final Spring Final. If she earned a 60 on Semester 1, a 62 on RC3 and a 53 on RC4 what is the minimum score she would need to earn on the final to pass for the year? RC3 and RC4 are averaged together for 90% of the semester 2 grade. The Spring final is 10% of the semester 2 grade. The final grade is the average of the Semester 1 and Semester 2 grade. A 70% is passing.

Answers

Step-by-step explanation:

The final grade is the average of the two semesters.

70 = ½ (60 + x)

x = 80

So Catherine needs a Semester 2 grade of 80%.

The average of RC3 and RC4 is ½ (62 + 53) = 57.5.  This accounts for 90% of the Semester 2 grade.  The other 10% is the Spring final.

80 = 0.90 (57.5) + 0.10 (x)

x = 282.5

Catherine would have to score 282.5% on the Spring final in order to pass.

Find the equation of the line with slope 3/5 and y-intercept (0,4)

Answers

Answer:

10,5

Step-by-step explanation:

Answer:

y=3/5x+4

Step-by-step explanation:

slope intercept form is y=mx+b

m=3/5

b=4

In a paint store you’re mixing paint for a larger order. Paint requires mixture of 75% base 25% color. How many gallons of base should you mix for 4 gallons of color ?

Answers

12 gallons of base are needed

What is the greatest common factor of 80 and 16?

Answers

Answer:

16

Step-by-step explanation:

did the calculation

Answer:

Therefore the highest common factor of 80 and 16 = 8

Зr + 4 = 12 = Зr
What is the answer

Answers

Answer:

r = 8

Step-by-step explanation:

Solve for r:

r + 4 = 12

Subtract 4 from both sides:

r + (4 - 4) = 12 - 4

4 - 4 = 0:

r = 12 - 4

12 - 4 = 8:

Answer: r = 8

Is -(5/12) equal to 5/-12

Answers

Answer:

Yes it is.

Step-by-step explanation:

-(5/12) = -*5/12 = -5/12

5/-12 = -5/12

Best of Luck!

Answer: yes

Explanation:

40 fewer than a number t
0 40-t
Ot+40
O -400
O t-40

Answers

Should be the last one t-40

Answer:

The answer is the last one - t-40

Which quadrant is (-13, -12) located?

Answers

Answer:

Third quadrant

Step-by-step explanation:

Answer:

Quadrant III

Step-by-step explanation:

(-13, -12) is located in quadrant III because both the x values and y values are negative in the ordered pair, therefore they will be graphed on the part of the coordinate plane where the x and y values are also both negative simultaneously.

I included a photo so it is easier to visualize.

What is the expanded form of 648,870,030,096.994

Answers

600,000,000,000+40,000,000,000+8,000,000,000+800,000,000+70,000,000+30,000+90+6+.9+.09+.004

If f(x) = 2x + 4 and 9 (20) = x - 3, find f (g(x)).

Answers

Answer: D

Step-by-step explanation:

To find f(g(x)), you want to take g(x) and plug that into f(x). Since we are given f(x) and g(x), we can go ahead and do that.

f(g(x))=2(x-3)+4                  [distribute]

f(g(x))=2x-6+4                     [combine like terms]

f(g(x))=2x-2

Now, we know that f(g(x))=2x-2.

Write the equation represents the situation?

“Bill has 16 missing math assignments. If he
completes 2 in class and 3 each day how
long will it take him to make up his missing
work?”

Answers

Answer: X= days.        Equation: 16-2-3X=X

Step-by-step explanation:

there is none, it’s pretty straight forward.

But if you want to solve for how many days then it’s, 3 1/2 days

help um. Order the set of numbers from least to greatest

Answers

5/2 , √5 , 2¾ , 2.71 (bar)

am not really sure but i guess that is what I know.

Answer:

 [tex]2\frac{3}{4}, 2.71, \sqrt{5}, \frac{5}{2}[/tex]

Step-by-step explanation:

Just convert them all to a decimal, I'm too lazy to write it all out...

PLZZZ HELP WILL GIVE BRAINLIST

Answers

Answer:

2. C-40 3. A-1/85

Step-by-step explanation:

hope it helps

help plz I GIVE OUT BRAINIEST!

Answers

He ran 100 meters in 9.63 seconds, so we can set up the equation below and do these steps...

100 meters = 9.63 seconds

10.384 meters = 1 second (divide both sides by 9.63)

37382.4 meters = 3600 seconds (multiply both sides by 3600)

37382.4 meters = 1 hour

His speed is roughly 37382.4 meters per hour, which is less than 40234 meters/hr = 25 mi/hr

Answer: his speed is less than the speed limit 25 mph

I NEED AN ANSWER NOW ASAP

Answers

Answer:

Apparently i cant see the photo im am so sorry but do need pints.

Step-by-step explanation:

Answer:

option b & option c & option d

Step-by-step explanation:

option a: The left side   − 0.475  is not less than the right side  − 0.5 , which means that the given statement is false.

option b: The left side  − 0.3  is less than the right side  0.1 , which means that the given statement is always true.

option c: The left side  9.05  is greater than the right side  − 9.72 , which means that the given statement is always true.

option d: The left side  1.5  is equal to the right side  1.5 , which means that the given statement is always true.

If m<2 =47°, then what is m<6? How do you know?

Answers

is it supplementary or complementary ?

solve integer
25+(-13)

Answers

Answer:

i think thats 12

Step-by-step explanation:

25+(-13)
the answer is 12

ASAP FASTER THAN THAT ITS DUE IN LIKE 30 OR LESS MINuTES
Rectangle A measures 9 inches by 3 inches. Rectangle B is a scaled copy of Rectangle A.

Select ALL of the measurement pairs that could be the dimensions of Rectangle B.

A. 4.5 inches by 1.5 inches
Could or could not(thats the question for all of them)
B. 8 inches by 2 inches
could or could not
C. 10 inches by 4 inches
could or could not

D. 13.5 inches by 4.5 inches
could or could not
E. 90 inches by 30 inches
could or could not

Answers

Answer:

a,d,e could

Step-by-step explanation:

a-is 1/2 of rec a so yes

b-no

c-no

d-could it 1.5 of rec a

e-could it 10 times rec a

p(q ÷ 3 - p ); use p = -6, and q= -3

Answers

Answer:

Step-by-step explanation:

p(q ÷ 3 - p )

p = -6

q= -3

-6(-3/3 - (-6))

-6(-1 + 6)

-6(+5)

-30

F=kr Solve for k I'm lost please help

Answers

Answer:

F /r = k

Step-by-step explanation:

F=kr

Divide each side by r

F/r=kr/r

F /r = k

please help me answer this question​

Answers

Answer:

false

Step-by-step explanation:

Answer:

False

Step-by-step explanation:

In order for two triangles to be congruent, they must have the exact same side lengths and angle measures. In this case, you know that the angles of the triangles are equal, but you are not given side lengths. In math, you can never assume that the lengths are equal just because they look like it. Therefore, the answer is B. False because you do not know a single side length. In the future, review the rules of congruent triangles: SAS, ASA, SSS, AAS, HL where S = side, A = angle, H = hypotenuse, L = leg.

what is the value of x? enter your answer in the box.​

Answers

Answer:

84

Step-by-step explanation:

The interior sum of a pentagon is 540 degrees. If you add up all the given angles together, then it will add up to be 456. subtract 456 from 540, and you'll get your answer, which is 84.

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