Mathematics High School


Find the sum.
(- 8x – 12) + (9x + 4)

Answers

Answer 1

Answer:

x-8

......................

Answer 2

Step-by-step explanation:

-8x-12+9x+4

-8x+9x-12+4

x-8

x-8=0

x=8

Related Questions

Please help if you can!!!

Answers

Answer:

Step-by-step explanation:

y = ax² + bx + c

Plug in the three given points, then solve for a, b, c

(-3,0): 0 = 9a - 3b + c

(4,0): 0 = 16a + 4a + c

(0,-12): -12 = c

9a - 3b = 12

3a - b = 4

16a + 4b = 12

4a + b = 3

a = 1

b = -1

y = x² - x - 12

• How much do customers have to spend in order to raise $1,000 for the pet rescue program? Amount Spent (dollars) 120 Amount Donated (dollars) 1000

Answers

Complete question :

a pet store had a special offer this weekend. for every $120 that customers spend, $3 is donated to a pet rescue program. How much do customers have to spend in order to raise $1000 for the pet rescue program?

Answer:

$40000

Step-by-step explanation:

Offer :

For every $120 spent ; $3 is donated

In other to raise $1000 ; $x would have to be spent ; we can obtain the value of x using cross multiplication ;

$120 = $3

$x = $1000

Cross multiply

$(120 * 1000) = $3 * x

$120000 = $3x

x = 120000 / 3

x = 40,000

Hence, in other to raise $1000 ; $40000 would have to be spent by customers.

Anne claims that a store-brand fertilizer works better than homemade compost as a soil enhancement when growing tomatoes. To test her theory, she plants two tomato plants in each of five planters. One plant in each planter is grown in soil with storebrand fertilizer and the other plant is grown in soil with homemade compost, with the choice of soil determined at random. In three months, she will harvest and weigh the tomatoes from each plant. What is the correct confidence interval Anne should use to analyze these data

Answers

Answer: Paired t interval for μdiff

Step-by-step explanation:

The confidence interval suitable for analysing the data described in the scenario above is the paired t test which is employed when there are two different sets of measured reading or observation for each subject. In the scenario above, the subjects are of of the different planters employed whereby the pair of measurement are the weight of tomatoes obtained for each of the two different fertilizer types applied to each of the two plants in a planter. With these data, we can measure the difference in the effectiveness of each of the store brand and homegrown compost.

Please help I don’t get it will give brainliest

Answers

Answer:

7x-7+8x9=23

Step-by-step explanation:

7x-7+8x9=23

how many lines of symmetry does the eight capital letter of the english alphabet have? PLEASE HELP

Answers

Answer:

2

Step-by-step explanation:

Horizontally and vertically wise

An electrician charges $100 per visit plus $75/h for house calls. Write an algebraic expression that describes the service charges for one household visit. Use your expressions to find the total service charge for a 2.5 –h repair job.

Answers

Answer:

100(2.5)+75=$325

Step-by-step explanation:

What’s the missing term ?

Answers

if the pattern continues, I believe it would be 2x.

what is 7 as a mixed number in the simplest form?

Answers

Answer:

7 is the simplest form. A mixed number needs a fraction

Step-by-step explanation:

Answer:

7/1

7

Step-by-step explanation:

Angle measures and segment lengths - find x do not round

Answers

Answer: 12

Step-by-step explanation:

Answer:

12

Step-by-step explanation:

HELP PLZ!!!
A chord is a diameter.

-always
-sometimes
-never

Answers

Answer:

always hope this helps :)

Step-by-step explanation:

Step-by-step explanation:

sometimes would be your answer<3

The answer is sometimes, but this is only when the chord passes through the centermost point on the circle.

ASAP NEED HELP DUE TMR

Answers

The mean is 58 the median is 15.5

Joe has 12 fewer books than Moe. If Joe has 30 books, how many books does Moe have? Match the equation and solve for Moe's books (use the variable M for Moe

Answers

Answer: 42 books

Step-by-step explanation:

30+12=M

Joe has 12 fewer books than Moe and he has 30 books. That means Moe has 12 more books. Which is 30+12=42

Subtract the expressions

(4x + 6) - (2x + 3)

options:

2x + 9


6x + 9


2x + 3


6x + 3

Answers

The answer is 2x+3 !!

Answer:

Yap, the answer is definitely 2x + 3, I got it right lol.

Step-by-step explanation: OOOOOOOOFFFFFF

Which diagram matches the equation or description.

Answers

I believe the answer to this diagram should be Diagram B

What is the probability that Nathan scores three goals if he take six shots in the game .

Answers

He has a 50/50 chance, so three

.

Answer:

waaa waaa

Step-by-step explanation:

i wont to play fortnite but i can because i have home work :(

PLEASE ANSWER HONESTLY (PLEASE BE HELPFULL I HAVE BEEN STUCK ON THIS PROBLEM) WILL MARK BRANIEST IF CORRECT. (no links my computer is slow and no ctrl c ctrol v if possible

Answers

Answer:

a^2+b^2=c^2 look below

Step-by-step explanation:

Count the squares so

3^2+4^2=5^2

3*3=9

4*4=16

5*5=25

9+16=25 and it does check out

this should help if u need more explanation ill be more then happy to explain to you

The area of a right triangle is 39.6cm2 , and the base of the triangle is 12in . Which of the following values is the height of the triangle?

Answers

Answer:

2.598cm

Step-by-step explanation:

Area of a triangle =1/2 * base * Height

Given

ARea = 39.6cm^2

Base= 12in = 2.54 * 12

Base = 30.48cm

Required

Height

Substitute

39.6 = 1/2 * 30.48 * H

39.6 = 15.24 * H

H = 39.6/15.24

H = 2.598cm

Hence the height of the triangle is 2.598cm

What is the value of the expression
-15 - (-7) + (-1) + 7 - 6?

Answers

Here is the answer hope this helps!

Natalia is making a model of a statue using a scale in which 7 centimeter equals 4 feet. If the model is 3.5 centimeters wide, what is the actual width of the statue, in feet? Your answer can be exact or rounded to two decimal places,​

Answers

Answer:

2 ft

Step-by-step explanation:

[tex] \dfrac{7}{4} = \dfrac{3.5}{x} [/tex]

[tex] 7x = 4 \times 3.5 [/tex]

[tex] x = 2 [/tex]

Answer: 2 ft

are a trapezoid and a parallelogram sometimes, always, or never similar?

Answers

No, a trapezoid is not a parallelogram. They both are quadrilaterals which have 4 sides each. Parallelogram has opposite sides equal and parallel, but trapezoid has one set of sides parallel but not equal. Parallelogram has opposite angles equal.

The scale of a map says that 6 cm represents 15 km,
What is the actual number of kilometers that is represented by 16 cm on the map

Answers

The answer is 40 km I think

whats 1x500 plsssssssssssssssssss

Answers

Its 500

because anything that is getting multiplied by one is the same number.

Answer:

500

Step-by-step explanation:

1 x whatever number is always gonna be the number you multiply.

what is the area of the figure

Answers

Answer:

24 cm

Step-by-step explanation:

4x5=20 for the rectangle and 2x2=4for the square at the right
then add them up gives you 24

20 POINTS Please Will MARK AS A BRAINLEST

Answers

Answer:

tanA = [tex]\frac{12}{5}[/tex]

Step-by-step explanation:

tanA = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{BC}{AB}[/tex] = [tex]\frac{24}{10}[/tex] = [tex]\frac{12}{5}[/tex]

Answer:

67.38

Step-by-step explanation:

Tan =opposite/adjacent

=24/10

=2.4

Tan 2.4=67.38, when used on a calculator, i.e,shift tan 2.4

Match the following three dimensional figures to the appropiate nets below.

Answers

In my opinion it’s F

Miguel and three of his friends went to the
movies. They originally had a total of $40. Each boy had the same amount
of money and spent $7.50 on a ticket. How much money did each boy
have left after buying his ticket? Write and solve an equation that represents the situation. Explain how you solved your equation. Compare the arithmetic solution and algebraic solution.

Answers

Answer:

either 17.5 or 10

Step-by-step explanation:

if you minus 40 3 times you get 17.5

Enter the slope of the line through the points (-9, -6) and (3, -9)

Answers

Answer:

-1/4 slope

Step-by-step explanation:

y2 -y1 = -9 - (-6) = -3

x2-x1= 3 -9 = 12

-3/12 = - 1/4

With equation does not represent a proportional relationship
A y=5x
B y= 1 = 1/2 x
C y= x + 5
D 2y =5x

Answers

Answer:

x (weeks). 0. 1. 2. 3. 4 y (savings in dollars). 25. 30. 35. 40. 45. The relationship is linear but ... 5. 6 slope = unit rate = 2 words/min slope = unit rate = 0.4 ft/s y = 1_. 2 x. Unit 2. 182 ... Write an equation that represents the proportional relationship shown in ... does not charge a fixed rate but charges $1.00 per mile.

Step-by-step explanation

slope: 2 y-intercept_-_Equation: y=2x-1 4.slope: 13 y-intercept_l Equatio ... Mo Parallel to y= -5x+8 __y=-5x+1) (same slope) m= -5. No slope ... (no y value, only x-value) denominator 0 ... The amount y (in cups) of flour is proportional to the number x of eggs in a recipe. ... Write an equation that represents the situation.

If your running a race and you passed the person in second place what place would you be in now?

Answers

Answer:

the answer is first place

Answer:

Second place

Step-by-step explanation:

Because that person was in SECOND PLACE and you were behind them, you two switched because you got ahead of them,  but you are NOT in FIRST place, because there is still one person in front of you. Good luck!

Luke was packing up his old toys. He managed to squeeze eight toys into a box. If Luke filled up seven boxes, how many toys did he pack total?

Answers

Answer:

56????

Step-by-step explanation:

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