Mathematics High School

Pleaseee help!

Marie was trying to show her friend why -3 × -8 equals a positive product. This is what she wrote:

-3 × 0 = 0
-3 × (?) = 0
-3(8) + -3(-8) = 0


-24 + 24 = 0

What should Marie write in place of the question mark?
A. 8 + 8
B. -8 + (-8)
C. 8 + (-8)
D. -8 + 0

Answers

Answer 1

Answer:

C

Step-by-step explanation:

C is the only one that works,.

Answer 2

Answer:

the correct answer is c

Related Questions

What is the length of AE

Answers

It is 17 because my brain is huge

Helppp!
Three sides of a triangle are 35 cm , 42 cm, and 70 cm . What is the ratio of the sides of the triangle?
A. 5:6
B. 70:84:140
C. 5:6:10
D. 7:6:42

Answers

C. 5:6:10 Explanation: since they all have a common dividend of 7, u just have to divide all of them by 7 :)
The answer to this question is C.5:6:10

Given: AC = 40. Fill in the reason that justifies each step.
(4x+4)+(5x)=(40)
9x + 4 = 40
9x = 36
x = 4
Will give brainliest

Answers

Answer:

True, every step that was done is correct.

Step-by-step explanation:

Since that whole line of AC equals 40, and that (4x+4)+(5x) also equals the whole line, you can just do it this way: (4x+4)+(5x)=40  Solve for x and x will equal 4.  I even used an algebra calculator to solve for x and the calculator indeed said that x=4 (the image is shown below on the calculator I used to solve for x).

Hope this helped! :)

What’s the slope of the line that passes through (-8, -5) and (-2, 5).

Answers

Look at the attachment for work

1/2 x = 14
What is x

Answers

Answer:28

Source:trust me bro

Answer:

1/2 x 28 =14       X=28

Step-by-step explanation:

Rachel packed supplies for the sixth grade picnic. For every 11 forks she packed, she packed 8 spoons. Rachel packed a total of 110 forks. How many spoons did she pack?

Answers

Answer:

80

Step-by-step explanation:

The ratio is 11:8 multiply it by 10 it turns into 110:80

Answer:

80

Step-by-step explanation:

because that's the answer

A change jar contains nickels and quarters. The number
of nickels is 4 less than twice the number of quarters. If
the sum is $2.25, find how many quarters are in the jar

Answers

Answer:The answer is 7

Step-by-step explanation:

A company has to buy computers and printers. Each computer costs $550 and each printer costs $390. If
the company spends $8160 and buys a total of 16 machines, how many of each did it buy?
a. Let Statements:
b. Write the system:

Answers

Answer:

Answer:the company bought 12 computers and 4 printers.

Step-by-step explanation:

Step-by-step explanation:

Let x represent the number of computers that the company bought.

Let y represent the number of printers that the company bought.

The company buys a total of 16 machines. It means that

x + y = 16

Each computer costs $550 and each printer costs $390. If the company spends $8160 for all the computers and printers that was bought, it means that

550x + 390y = 8160 - - - - - - - - - - 1

Substituting x = 16 - y into equation 1, it becomes

550(16 - y) + 390y = 8160

8800 - 550y + 390y = 8160

- 550y + 390y = 8160 - 8800

- 160y = - 640

y = - 640/ - 160

y = 4

Substituting y = 4 into x = 16 - y, it becomes

x = 16 - 4

x = 12

Answer:

The company bought 12 computers and 4 printers.

Step-by-step explanation:

Let x represent the number of computers that the company bought.

Let y represent the number of printers that the company bought.

The company buys a total of 16 machines. It means that

x + y = 16

Each computer costs $550 and each printer costs $390. If the company spends $8160 for all the computers and printers that was bought, it means that

550x + 390y = 8160 - - - - - - - - - - 1

Substituting x = 16 - y into equation 1, it becomes

550(16 - y) + 390y = 8160

8800 - 550y + 390y = 8160

- 550y + 390y = 8160 - 8800

- 160y = - 640

y = - 640/ - 160

y = 4

Substituting y = 4 into x = 16 - y, it becomes

x = 16 - 4

x = 12

A pair of designer sneakers was purchased for $100. Since they were purchased, their price has increased by 15%. What is the new price?

Answers

Answer:

115

Step-by-step explanation:

is the following equation true or false 12 3/8=12+3/8

Answers

Answer:

Its true

Step-by-step explanation:

Answer:

Uh yes it is true

Step-by-step explanation

I honestly don't know if you are trolling me or really have a confusion

Consider the situation where 12 people at a picnic want to select an activity for the afternoon. Which activity would win a plurality election

Answers

Answer is soccer because it has more numbers in the picture

6. Which of the following lines is perpendicular to the line **
4y = -- 24 and passes through the point (6 - 2)
(A) y a 4x 22
(B) yax - 22
(C) y = 22
(D) y - 4x-22
(E) = 4x+18

Answers

B because you just work it out

Answer:b

Step-by-step explanation:

Its correct

(4x-1) /2=x+7
4x-1 all over 2 = x +7​

Answers

Answer:

x = [tex]\frac{15}{2}[/tex]

Step-by-step explanation:

Given

[tex]\frac{4x-1}{2}[/tex] = x + 7 ( multiply both sides by 2 to clear the fraction )

4x - 1 = 2(x + 7) ← distribute

4x - 1 = 2x + 14 ( subtract 2x from both sides )

2x - 1 = 14 ( add 1 to both sides )

2x = 15 ( divide both sides by 2 )

x = [tex]\frac{15}{2}[/tex]

What is the value of x in the equation 3x - 1/9y = 18, when y = 27?

Answers

Answer:

x=7

Step-by-step explanation:

I WILL PUT MANY POINTS ANSWER PROPERLY OR ELSE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Zoe took a total of 28 quizzes over the course of 4 weeks. After attending 6 weeks of school this quarter, how many quizzes will Zoe have taken in total? Assume the relationship is directly proportional.

? quizzes
I HAVE MORE QUESTIONS SO DONT ANSWER AND LEAVE

Answers

Answer:

42

Step-by-step explanation:

can i get some help

Answers

Answer:x = -0.1290322581

Step-by-step explanation:

Simplifying

9x + -4(1 + 10x) = 0

9x + (1 * -4 + 10x * -4) = 0

9x + (-4 + -40x) = 0

Reorder the terms:

-4 + 9x + -40x = 0

Combine like terms: 9x + -40x = -31x

-4 + -31x = 0

Solving

-4 + -31x = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '4' to each side of the equation.

-4 + 4 + -31x = 0 + 4

Combine like terms: -4 + 4 = 0

0 + -31x = 0 + 4

-31x = 0 + 4

Combine like terms: 0 + 4 = 4

-31x = 4

Divide each side by '-31'.

x = -0.1290322581

Simplifying

A function f(x) is defined to be f(x) = X^2 -3x +21 .

What are the solutions to the equation f(x)=0?

Answers

Answer:

Step-by-step explanation:

Find the slope of the line passing through the points (-7, -4) and (8,8).

Answers

Answer:

Hope its work for you

Step-by-step explanation:

As we know that,

slope=m=(Y2-Y1)/(X2-X1)

As given values

take,   (X1,Y1)=(-7,-4)

           (X2-Y2)=(8,8)

hence   X1=-7  ,  Y1= -4   ,  X2=8  , Y2= 8

putt the values in the above equation of slope we get ,

m=(8-(-4))/(8-(-7)

m=12/15    Ans

Answer:

0.8

Step-by-step explanation:

Slope=(y2-y1) (8--4) (12)

(x2-x1)= (8--7)= (15)= 0.8

Why did Texans prefer low tariffs over protective tariffs? help plz

Answers

Answer:

they felt it only benefited the industrialized north, increased the cost of British textiles.

Step-by-step explanation:

learned during U.S history so i think its right

Answer:

Tariffs hurt Southerners?

Step-by-step explanation:

In 1828, Congress passed a high protective tariff that infuriated the southern states because they felt it only benefited the industrialized north. For example, a high tariff on imports increased the cost of British textiles. This tariff benefited American producers of cloth — mostly in the north.


In order for Josh to graph the solution to the inequality 4x - 2y > 6, which of the following steps does he need to use? Select all that apply.

Shade above the line.
Solve the inequality as y < 2x-3.
Draw the line y=2x-3 as a solid line.
Draw the line y=2x-3 as a dashed line.
Shade below the line.
Solve the inequality as y> 2x-3.

Answers

Solve the inequality as y < 2x-3.

Draw the line y=2x-3 as a dashed line.

Shade below the line.

Josh needs to follow the steps to draw the required inequality graph.

Solve the inequality y < 2x - 3 by solving for the x and y-interceptDraw the straight line y < 2x - 3 as a dashed line (since we have less than sign )Shade below the line. (Below the line are shaded for inequality sign that is "less than")

Inequality expressions are expressions that are not separated by an equal sign.

Given the inequality expression 4x - 2y > 6,

Dividing through by 2 will give:

4x/2 - 2y/2 > 6/2

2x - y > 3

Make y the subject of the formula

-y > -2x + 3

y < 2x -3

For Josh to plot the inequality graph of y < 2x - 3, he needs to follow the process;

Solve the inequality y < 2x - 3 by solving for the x and y-interceptDraw the straight line y < 2x - 3 as a dashed line (since we have less than sign )Shade below the line. (Below the line are shaded for inequality sign that is "less than")

Learn more here: https://brainly.com/question/6874464

Can you measure 4 gallons of water using a 3 gallon jar and a 6 gallon jar?

Answers

Answer:

yes just fill up the 6 gallon jar up to the 4 galon mark

Step-by-step explanation:

Yes you can divide the 6 gallon jar in 6 levels. You can see how much water it is where witch level the water is

A department store buys 300 shirts for a total cost of $7,200 and sells them for $30 each. Find the percent markup.

Answers

Answer:

80%

Step-by-step explanation:

because 7200 / 300 equals 24 and 24 / 30 equals .8 so its 80% and if you want to check the answer you take 30 * .8 OR 80% and it gives you 24

The percent markup is 25%.

What is percent markup?

Markup percentage is calculated by dividing the gross profit of a unit (its sales price minus it's cost to make or purchase for resale) by the cost of that unit.

Given that, A department store buys 300 shirts for a total cost of $7,200 and sells them for $30 each.

Cost of one shirt = 7200 / 300 = $24

And they sold at $30 each,

Percent markup = 30-24 / 24 × 100

= 25%

Hence, the percent markup is 25%.

Learn more about Markup percentage, click;

https://brainly.com/question/28945726

#SPJ5

We want to find the zeros of this polynomial:
p(2) = (2x - 1)(x+3)(x + 1)(x - 2)
Plot all the zeros (x-intercepts) of the polynomial in the interactive graph.

Answers

Answer:

How do you find the zeros of a polynomial graphically?

Step-by-step explanation:

If we graph this polynomial as y = p(x), then you can see that these are the values of x where y = 0. In other words, they are the x-intercepts of the graph. The zeros of a polynomial can be found by finding where the graph of the polynomial crosses or touches the x-axis.

a car is traveling at 35 miles per hour. what is the car's speed per second?


please help :(

Answers

It may be **0.009821**?

But I’m not 100% sure

Sorry

Can someone please help with this question please I need help?!

Answers

Answer: B

Step-by-step explanation:

Each month, the person seems to grow taller. So, there IS a positive association between height and age.

I’m pretty sure the answer would be b! Good luck!! :3

The sum of a number and two is equal to negative seven. Translate this sentence to an equation and then find the number.

5
9
-9
-5

Answers

x + 2 = -7
your answer to this equation is x=-9

Answer:

its C

Step-by-step explanation:

12 people in line at an ice-cream shop 8 ordered cones with 2 scoops of ice cream the rest ordered cones with 1 scoop what is the ratio

Answers

Answer:

2:1

Step-by-step explanation:

39 is 150% of what number?

Answers

Answer:

26.

Step-by-step explanation:

Pretty self-explanatory.

Can I conclude ? (Please don’t be wrong I’ll give brainlist)

Answers

Yes, by SAS theorem.

Answer:

yes because of the side-angle-side theorem

Step-by-step explanation:

What percent of $0.32 = $0.08

Answers

Answer:

1/4 or 25%

Step-by-step explanation:

because we know the whole is .32 so that means that for  0.08 is 1/4 or 25% of 0.32

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