MATHEMATICS MIDDLE SCHOOL

9+7 x 5 solution please​

Answers

Answer 1
Answer:

Answer:

44

Step-by-step explanation:
Answer 2
Answer:

Answer:

the answer is 44

Step-by-step explanation:

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12 divided by the sum of h and 2

Write it in algebraic expression

Answers

12 divided by the sum of h and 2....

12 / (h + 2)
Since h and 2 together is a sum, and sum is what you get when you add two or more number/variables, add h and 2 for the expression h+2.
Since 12 is being divided by (h + 2), put the 12 above the h+2. This gives you the following expression:
(12)/(h+2)

25 PTS!!!!y = 3x + 3 y = x − 1 Explain how you will solve the pair of equations by substitution. Show all the steps and write the solution in (x, y) form

Answers

remember that you can do anything to an equaiton as long as you do it to both sides
ok so subsitution
basiclalyy you subsitute a known thing for an unknown thing so
y=3x+3 and y=x-1
they both equal y so
3x+3=y=x-1
3x+3=x-1
subtract x from both sides
2x+3=-1
subtract 3 from bot sides
2x=-4
divide both sides by 2
x=-2
subsitute
y=x-1
y=-2-1
y=-3

the solution is x=-2 y=-3 so
(x,y)
(-2,-3)

A grocery store receipt shows 5% state tax due on laundry detergent and a flower bouquet. Does it matter whether the tax is calculated on each separate item or the total cost? Explain.

Answers

Calculated on each separate item because, the 5% is PER ITEM for example here in Florida, there is a 7% tax but no tax on unprepared food, but if you go to Whole Foods and buy 4 burgers and a head of lettuce they tax for each burger because if it was for the total cost they would be taxing for the head of lettuce which is not what the state law says you can do.

Convert decimal to fraction

Answers

Converting decimals into fractions is simple, all you have to do is think about the number, for example .25, if you look at it you realize it's 1/4 of 1, so it's naturally 1/4, you do this with all of them
You have to Multiply the decimal by 100

Shari bought 2 1/2 yard of fabricfor $7.99 per yard. She used 3/4 of fabric to make decorative pillows. How much money could Shari have saved by only buying the amount of fabric that she used? Write your answer in dollars and round to the nearest tenth.

Answers

First, calculate how much Shari paid in total for 2.5 yards of fabric. Since each yard costs $7.99, you would multiply the number of yards Shari bought by the price per yard:
7.99×2.5=19.975, which rounds to $19.98

Then, calculate how much fabric Shari actually used:
(3/4)×2.5 yds= 1.875 yards

Next, calculate how much Shari would have paid if she only bought the amount of fabric that she used (1.875 yards):
7.99×1.875=14.98125, which rounds to $14.98

Lastly, to find the amount Shari could have saved, subtract $14.98 from the amount Shari actually paid, $19.98:
19.98-14.98=5. 
So, the final answer would be that Shari could have saved $5.

A Website sells MP3 downloads of music for $10 and Blu-ray discs of movies for $30. Fiona wants to buy some albums and some movies. She plans to spend a total of $150. Write and graph an equation to represent the situation.How do i work this out?

Answers

Answer:

Let x be the number of albums to be  bought and

let y be the number of movies  to be bought.

The amount to be spent on albums is 10x and

The amount to be spent on movies is 30y.

As per the given condition: The total amout to be spent must equal $ 150.

then, we have

10x+30y = 150              ......[1]

Now, find x-intercepts and y-intercepts of equation [1];

x-intercepts defined as the graph crosses the x-axis.

Substitute y= 0 in [1] to solve for x;

10x+30(0)=150

10x =150

Divide both sides by 10 we get;

(10x)/(10)=(150)/(10)

Simplify:

x = 15

y-intercepts defined as the graph crosses the y-axis.

Substitute value of x=0 in [1] to solve for y;

10(0)+30y = 150

30y =150

Divide both sides by 30 we get;

y =5

Now, plot these points (0, 5) and (15, 0) on graph and  connect them with a line as shown in the figure below;

Answer:

x + 3y = 15

The graph is attached below.

Step-by-step explanation:

Given the price of album = $10.

and the price of movies = $30.

Let's assume she buys "X" albums and "Y" movies.

Cost would be (10X + 30Y).

She plans to spend a total of $150, so cost would be same as total expenditure.

10X + 30Y = 150

X + 3Y = 15

we can graph this equation of line on a graph paper as given below:-
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