MATHEMATICS HIGH SCHOOL

Mr. Smith went to buy a refrigerator. He had $346. The refrigerator cost $783.Part A
About how much more money does Mr. Smith need in order to buy the refrigerator?
Round your answer to the nearest hundred dollars.
Part B
After visiting the bank ,Mr.Smith paid $800 for the refrigerator.How much change did he receive Mr.Smith receive in change ?

Answers

Answer 1

Answer:

Answer:

Part A- $400

Part B- $17

Step-by-step explanation:

Answer 2

Answer:

Answer:

A- 400.00 more dollars.

B- 17 dollars in change.

Step-by-step explanation:

783-346 and then round up.

800-783 for change

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7kg of soybean oil which costs $4/kg was combined with 14kg of canola which costs $1/kg. Find the cost per kg of mixture.

Answers

(7*4 + 14*1)/(7+14) = 42/21 = $2/ kg of mixture;

Solve the equation. If necessary, round your answer to the nearest tenth.x2 = 256

A.
128

B.
16

C.
16, –16

D.
128, –128

Answers

there was to solutions
x=16
x=-16

Answer:

16, -16

Step-by-step explanation:

x^2 = 256

x = $√(256)$

x = $√(4 * 64)$

x = $√(4)$ * $√(64)$

x = 2 * 8

x = 16

Hopes this helps >.<

Show how the greateat common factor of the number 10 and 15 can be used to reduce the fraction 10/15

Answers

The greatest common factor of 10 and 15 is 5. To find that answer, start by listing the factors of both numbers.

10: 1, 2, 5, 10
15: 1, 3, 5, 15

The GCF is 5. Using this, we can divide both numbers by 5 to get 2/3, which is the simplified version of 10/15.

The length of a rectangle is 3 inches more than its width. The area of . the rectangle is 40 square inches. What is the length, in inches, of the . rectangle?. (1) 5 (2) 8 (3) 8.5 (4) 11.6

Answers

Let's say W=the width of the rectangle

if width times length equals the area, then...

W x (3+W)=40
Length = 8
Width = 5
I started by factorising 40:
2, 2, 2, 5.
Then you just find a way to arrange those numbers that works

Area of a rectangle=lenght x width.
width=x
length=x+3
we can suggest this equation:
x(x+3)=40
x²+3x=40
x²+3x-40=0
we solve this square equation:
x=[-3⁺₋√(9+160)] / 2
x=(-3⁺₋13)/2
we have two solutions:
x₁=(-3-13)/2=-8 this solution isn´t valid.
x₂=(-3+13)/2=5

lenght=x+3=5+3=8

Answer: the lenght, in inches, of the rectangle is 8 .
(2) 8

A share of stock in the Lofty Cheese Company is quoted at 25 1/4. Suppose you hold 30 shares of that stock, which you bought at 20 1/4. If you sell your stock at 25 1/4, which one of the following statements would be true? A: you'll suffer a loss of $15
B: you'll make a profit of $15
C: you'll make a profit of $150
D: you'll suffer a lose if $150

Answers

Since each share was purchased when it was still quoted at 20 1/4, then when the stock value increases, it gains (25 1/4 - 20 1/4) = $5.00 for each stock.Since you're to sell 30 shares of your stock, that means you'll be making a profit of (30 x 5 ) = $150.00.Thus, the answer is C.

The true statement is that you'll make a profit of $150 which is option C.

Given that,

A share of stock in the Lofty Cheese Company is quoted at 25 1/4.

Suppose you hold 30 shares of that stock, which you bought at 20 1/4.

If you sell your stock at 25 1/4, we have to know if they suffer profit or loss and by what amount.

Cost of the stock which you bought is,

Cost = 30 × 20 1/4

= 30 × 20.25

= 607.5

If you sell your stock at 25 1/4,

Selling price = 30 × 25 1/4

= 30 × 25.25