Mathematics High School

I need help I don’t understand

Answers

Answer 1

Answer:

x=50

Step-by-step explanation:

A= 30+2x

B= x

Supplementary angles are angles that always add up to 180 degrees.

therefore, A + B=180 degrees

30 + 2x + x = 180: Now we solve

30 + 3x =180

subtract 30 from both sides

3x=150

divide by 3

3x/3 = 150/3

x= 50

Related Questions

PLEASE HELP
Let f(x) = 4x + 3 and g(x) = -2x + 5. Find.(f.g)(5)
a. 23
b. -17
c. -41
d. -5

Answers

Answer:

After solving we get (f.g)(5)=-115

But the correct option is not given in the question.

Step-by-step explanation:

We are given:

[tex]f(x) = 4x+3\\g(x)=-2x+5[/tex]

We need to find (f.g)(5)

First we will multiply f and g to find (f.g) i.e

[tex](f.g)(x)= f(x) \times g(x)\\(f.g)(x) = (4x + 3)(-2x + 5)\\(f.g)(x)=4x(-2x+5)+3(-2x+5)\\(f.g)(x)=-8x^2+20x-6x+15\\(f.g)(x)=-8x^2+14x+15\\[/tex]

Now putting x=5

[tex](f.g)(x)=-8x^2+14x+15\\Put \ x=5\\(f.g)(5)=-8(5)^2+14(5)+15\\(f.g)(5)=-8(25)+70+15\\(f.g)(5)=-200+70+15\\(f.g)(5)=-115[/tex]

So, after solving we get (f.g)(5)=-115

But the correct option is not given in the question.

X - 150 = y
x - y = 50
x + y = 180
x = y + 60
what is x?

Answers

It is y=x-150 because x−150+150=y+150

solve for y -3y+12= -48
Please show work tysmmm

Answers

Answer:

y=20

Step-by-step explanation:

-3y+12=-48

-12 -12

________________

-3y=-60

÷-3 ÷-3

___________________

y=20

I hope this helps :D

PLEASE HELP MY SOULLLLL

please answer these (please show a little work not alot is needed just some but, feel free to put more) plz put the question number next to the answer if you put it as text if you just edit the pictures then ignore then don't mind it

Answers

Answer:

I will help ur soul

Step-by-step explanation:

Do u need the work as well?

Ben earns $12,800 a year. About 15% is taken out for taxes.How much is taken out for taxes?

Answers

Answer:

10,200

Step-by-step explanation:

Subtract 15% using a calculator.

12,800-15%

Which expression(s) have a value that is greater than 6?

Select all the correct answers.

A. 6×23

B. 6×218

C. 6÷34

D. 6−15

F. 6−120

Answers

Answer:

A B F

Step-by-step explanation:

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In a fish tank there are 5 star fish for every 4 piranhas. Write 3 equivalent ratios.

Thank you

Answers

Answer:

10:8 (starfish:piranhas)

20:16 (starfish:piranhas)

15:12 (starfish:piranhas)

Step-by-step explanation:

What is the best estimate of the area of the figure if each square has an area of 4 cm2? On a coordinate plane, a figure contains 30 squares. 30 cm2 46 cm2 92 cm2 118 cm2

Answers

Answer: its not 30cm2

Step-by-step explanation:

The best estimate of the area of the figure is 120 cm², which is closest to option D.

How to calculate the area?

From the image, we can see that the figure contains 30 squares, and each square has an area of 4 cm².

Therefore, the total area of the figure can be estimated by multiplying the number of squares by the area of each square:

Total area = Number of squares × Area of each square

Total area = 30 squares × 4 cm²/square

Total area = 120 cm²

So, the best estimate of the area of the figure is 120 cm², which is closest to option D.

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What is the solution to the equation 1/4x - 1/8 = 7/8 + 1/2

Answers

the answer is

[tex]x = - 4[/tex]

46% of what is 13?
A)6
B)28.3
C)598
D)25

Answers

Answer:

5.98

Step-by-step explanation:

A rectangle has a width of 9 units and a length of 40 units. What is the length of a diagonal? 31 units 39 units 41 units 49 units

Answers

Answer: 41 units

Step-by-step explanation: took the quiz

The length of the diagonal is 41 units.

To find the length of a diagonal.

What is rectangle?

A Rectangle is a four sided-polygon, having all the internal angles equal to 90 degrees.

Let a right triangle with legs length 9 units and 40 units and hypotenuse is the diagonal length c.

[tex]a^{2} +b^{2} =c^{2}[/tex]

[tex]9^{2} +40^{2} =c^{2}[/tex]

[tex]81+1600=c^2\\1681=c^2[/tex]

sqrt both sides

41=c

So, the length of the diagonal is 41 units.

Learn more about rectangle here:

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Think of a real-life application where fractions and decimals could be used. Find 3 pictures related to this real-life scenario and put them on one Google Slide. Write down 5 examples of how fractions or decimals are related to this.

Answers

Answer:

1. Cooking

2. Construction

3. On a computer

Step-by-step explanation:

A rectangular garden has a length of 5a + 17 feet and a width of 4a feet. Which expression represents the area of the garden in square feet?

Answers

Answer:

(5a + 17) x 4a

Step-by-step explanation:

I NEED HELP ASAP, WILL GIVE BRAINLIEST

Which shows the series 0 + 2 + 6 + 12 written in sigma notation? Which shows the series 0+2+6+ 12 written in sigma notation? a. 4 (2n - 2) n=1 b. 4 (n-1) (n − 2) n=1 C. 4 (n2 - 1) n=1 d. 4 An(n-1) n=1

Answers

Answer:

Step-by-step explanation:

Use POE to eliminate answers that are not correct. Plug 1,2,3,4 into n for each of the sums, and see if they give you 0+2+6+12. Only D does this.

Last month, Jess received $13,087, of which $7,594 were one-time donations. If she earns $3 for each monthly subscription, which equation represents this situation, where x represents the number of monthly subscriptions to her channel?

Answers

Answer:

13,087 = 3x + 7,594

Step-by-step explanation:

have a good day

Which expression is equivalent to 9x2+24x+16?

(3x+8)(3x+8)

(3x+4)(3x+4)

(3x+4)(3x−4)

(3x+8)(3x−8)

Answers

Answer:

B. (3x + 4)(3x + 4)

The equivalent value of the expression is A = ( 3x + 4 ) ( 3x + 4 )

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

A = 9x² + 24x + 16

On factorizing the equation , we get

A = ( 3x + 4 )²

On simplifying , we get

A = ( 3x + 4 ) ( 3x + 4 )

A = 3x ( 3x + 4 ) + 4 ( 3x + 4 )

A = 9x² + 12x + 12x + 16

On further simplification , we get

A = 9x² + 24x + 16

Hence , the value of the expression is A = 9x² + 24x + 16

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What are some things to be aware of that can lead to higher than expected total when making a purchase or checking out?

Answers

Answer:

Taxes and shipping if checkout is online.

Step-by-step explanation:

I think the advertisements and sales can trick you or be false when you are shopping.

I am not really sure but I hope this helps!

(ANSWER ASAP) Solve the inequality.

Answers

Answer:

a>6

Step-by-step explanation:

add 2 to both sides

Answer:

a>6

Step-by-step explanation:

First, you would add 2 to each side to cancel out the -2 after the a. Now, you have a>6.

which expression has the same value as -5 - (-9)?

Answers

Answer: the answer is 4 your welcome

Step-by-step explanation:

7x – 11x = 20
(Multi- step equations)
please help
math test <3

Answers

Answer:

The answer is x= -5

Step-by-step explanation:

hope this helps

Solutions:

7x – 11x = 20

-4x=20

To find the x divide both side by -4

-4x/-4=20/-4

x= -5

Answer:

7x-11x=20

-4x=20

x=20/-4

x= -5

3. Sum of digits of a two digit number is 14. When 18 is added to the original number, then the new number is obtained by exchanging the digits of the original number. Express the statements in equation.

Answers

Answer:

let the numbers be xy

general form of the number =10x+y

sum of digits of a number =14

x+y=14………[1]

if 18 is added to the number, then digits are interchanged

10x+y+18=10y +x

9x-9y=-18

X-y=-2………[2]

the linear equations are 1) x+y=14

2) X-y=-2

adding [1],[2]

2x=12

x=6

x+y=14

y=14-x

y=14-6

y=8

there fore the number =10*6+8

=68

check:-

1)6+8=14

2)68+18=86

I hope this helped!

Step-by-step explanation:

Part A: Determine the average rate of change over the interval [B, C] .
O 6
O 24
O 96
O 384
Part B: Determine the average rate of change over the interval [D, E] .
O 6
O 24
O 96
O 384
Part C: The average rate of change is
O larger over the interval [D,E] than [B,C].
O smaller over the interval [D,E] than [B,C].
O the same over the interval [D,E] than [B,C].

Answers

Answer:

Part A: 24

Part b: 384

Part c: larger over the interval

Step-by-step explanation:

8x+4(4x- 3) = 4(6x +4)-4

Answers

There’s no value of x that make the equation true. (No solution)

a. 3x - 7+9 - 2x = x+2
Simplify equation

Answers

Answer:

No solution

Step-by-step explanation:

3x - 7+9 - 2x = x+2

3x-2x-x=2+7-9

0=0

No solution

Ben is going to rotate a figure in Quadrant IV 90 counterclockwise. In which Quadrant should be image be

Answers

The answer would be quadrant 1.

14. A family travels to Bryce Canyon for three days. On the first day they drove 150 miles. On the second day
they drove 190 miles. If their average number of miles per day was at least 180 miles, what is the number of
miles they will have to drive on the third day?
Write an inequality to show this problem.

Answers

Answer:

I'm guessing 170 miles.

Sry if i'm wrong, I tried my best.

It'll also make me happy if you would subscribe to my channel Yaya Playz 23, and my friends BonheurPlaysGames!!! and Sagesse Games, there small YTers as well. Thank you!

Can you please find the missing angle? Thanks!

Answers

I’m guessing that the missing angle (x) is 44 because the full degree of a triangle is 180 and one side is 68 and the parallel side must also be 68 so if you add that up, you get 136 and if you subtract 180 from 136 you get 44

Alberto is heating a solution in his chemistry lab. The temperature of the solution starts at 17°C. He turns on the burner and finds that the solution's temperature increases by 5°C every minute. This graph shows the temperature change.

Answers

Answer:

Step-by-step explanation:

If you look closely at the graph you will see only B could be the answer.

A doesn't work

B works

C is close

D could never work

In 1990 Detroit, Michigan, had an estimated population of 1,027,974. By 2000 the population had decreased 7 1/2%. What was the estimated population in 2000 for Detroit, Michigan? Find the answer to the nearest whole number.

Answers

Answer:

950876

Step-by-step explanation:

- the population had gone down 7.5%, that means 92.5% of the population remained [ 100 - 7.5 = 92.5 ]

- 92.5% of the original population is

( 92.5/100 ) * 1,027,974

- calculate and you'll get = 950875.95

- rounded up, its 950876

what does this mean? Could I be lectured on this? will give 50 points and brainliest to the fastest responder

Answers

Answer:

Nonproportional

Step-by-step explanation:

A line that is proportional will always pass through the origin (0, 0). If it does pass through the origin, then x and y have a proportional relationship.

Best of Luck!

Answer:

Step-by-step explanation:

if you look at the graph you see that

i don't know how to do it so

I think the answer is 60.

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