MATHEMATICS HIGH SCHOOL

Solve using the substitution method 2x+3y=1 and y=x-8

Answers

Answer 1
Answer: (5, -3) IS THE ANSWER. 
Answer 2
Answer: x=5
y=-3
thats what i got:) 

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HELP HELP HELP HELP HELP HELP WINNER GETS 8 points

Answers

do you know how to find the area of a normal shape?
You can split this shape into 2 rectangles if you draw a horizontal line between the bigger and smaller rectangle. 
The top half
LxW=A
5x7=35
The top half's area is 35.
The bottom Half
LxW=A
10x8=80
Now, add these 2 areas together and that is your answer.
Your answer is 115 cm^2

Please help and explain, I’m stuck on this on my homework

Answers

Answer:

THE ANSWER IS F. 23!

Step-by-step explanation:

THE ANSWER IS F. 23!

A DVD club charges nonmembers $20. 50 to purchase a DVD. With a $25 one-time membership fee, members pay $18 per DVD. For what number of DVDs is the cost the same for members and nonmembers on the first purchase? Write an equation that models the situation. Let d represent the number of DVDs. Solve the equation. For what number of DVDs is the cost the same for members and nonmembers’ first purchase from the DVD club?

Answers

A DVD club charges nonmembers $20. 50 to purchase a DVD. Members pay $18 per DVD for a one-time membership cost of $25. The cost is the same for members and nonmembers on the first purchase is 10.

Let's call the number of DVDs "d". For non-members, the cost of purchasing d DVDs is:

Cost for non-members = 20.50d

For members, the cost of purchasing d DVDs is:

Cost for members = 25 + 18d

We want to find the value of d for which the cost is the same for members and non-members. In other words, we want to find the value of d that satisfies the equation:

20.50d = 25 + 18d

To solve for d, we can start by subtracting 18d from both sides of the equation:

2.50d = 25

Then, we can divide both sides by 2.50:

d = 10

Therefore, the cost will be the same for members and non-members on the first purchase if the number of DVDs purchased is 10.

To learn more about cost, refer:-

brainly.com/question/28851110

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The locus of the equation xy + yz = 0 isA) a pair of perpendicular planes
B) a pair of parallel planes
C) a pair of straight lines
D) None of these

Answers

Answer:

it's A

Step-by-step explanation:

The locus represented by the equation xy+yz=0 is a pair of perpendicular planes

just graph it

Aubree is making pizzas for a pizza party. Each pizza requires 2/3 pound of cheese. How many pounds of cheese does she need to make 16 pizzas? Express your answer in simplest form.

Answers

Aubree need the amount of cheese  for 16 pizzas would be 10.6 pounds

What is a proportion?

A proportion is a fraction of a total amount, and the measures are related using a rule of three. The relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.

The given parameters are;

Pizza = 16

Proportion of cheese = 2/3

The amount of cheese is the proportion of cheese needed for the flower can be calculated as;

Cheese = Proportion x Pizza

So, we have:

Cheese = 2/3 x 16

Evaluate the product;

Cheese = 32/3

Cheese = 10.6

Hence, 10.6 pounds of cheese is needed for 16 pizzas.

Read more about proportions at:

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Answer:

10 2/3

Step-by-step explanation:

16 x 2/3

32/3 or 10 2/3

PLEASE HELP!!!!!!Which of the following experiments could be used to simulate an event in which the probability of success, P(success), is 0.65 and the number of successes out of 20 events is desired?

A, Use a spinner that is divided into five equal parts. Choose three colors for successful; the other two colors represent unsuccessful. Spin the spinner 20 times, once for each event.

B. Use a random number table consisting of the digits 0 through 9, with digits 0 through 3 representing successful and the remaining digits, 4 through 9, representing unsuccessful. Choose 20 digits, one for each event.

C. Roll a 10-sided die. Let 1 through 5 represent successful and the values 6 through 10 indicate unsuccessful. Roll the die 20 times, once for each event.

D. Count out 65 yellow beads and 35 pink beads. Select 20 of these beads at random. Let a yellow bead represent successful and a pink bead represent unsuccessful.

Answers

the following experiments could be used to simulate an event in which the probability of success, P(success), is 0.65 and the number of successes out of 20 events is:

D. Count out 65 yellow beads and 35 pink beads. Select 20 of these beads at random. Let a yellow bead represent successful and a pink bead represent unsuccessful.

65 + 35 = 100
65/100 = 0.65
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