MATHEMATICS HIGH SCHOOL

What two numbers add up to -53 and multiply to -24

Answers

Answer 1
Answer: assume the numbers are x , y
x+y =-53
x*y =-24
from equation 1 we get y = -53-x
sub in eqn.2
x* (-53 -x ) = -24
then x^2 + 53x -24 =0
and by solving the equation and substitute we get
the two numbers are
0.449 & -53.452

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Which decimal number is equivalent to 6/25?
A.0.6
B.0.12
C.0.06
D.0.24

Answers

D if you take 6/25 = 24/100 then change to a decimal and get 0.24

Gabriela buys a basket of coconuts on sale for $22 before tax. the sales tax is 12%.

Answers

After tax, it would be: 22 + 22*12/100 = 22+2.64 = $24.64

A retailer buys a radio from the wholesaler for $75.00. He then marks up the price by 1/3 and sells it at a discount of 20 %. What was his profit on the radio (to the nearest cent)?

Answers

He sells it at $80 which gives him a profit of $5!

The area of a trapezoid is 150 in squared if the height is 8 in. And the longer base is 23 in. What is the length of the shorter base ?

Answers

A=150in^2\n\nh=8in;\ a=23in;\ b=?\n\nA=(a+b)/(2)\cdot h\n\n(23+b)/(2)\cdot8=150\n\n(23+b)\cdot4=150\ \ \ \ /:4\n\n23+b=37.5\ \ \ \ /-23\n\nb=14.5\ (in)\leftarrow answer

21/7+3/7(3x−5)=−4Drag and drop the statement that shows the solution to the equation into the box.

Answers

i know this is really late but its for people here now (like me) the answer would be x= -3 1/9
21/7 + 3/7(3x - 5) = -4
21/7 + 9/7x - 15/7 = -4.....multiply everything by 7
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A recipe calls for 16 fluid ounces for light whipp cream. If Anthony has 1pint of whipping cream in his refrigerator does he have enough for the recipe

Answers

Answer:

Given: A recipe calls for 16 fluid ounces for light whipp cream.

Using:  1 fluid oz = 0.0625 pints

Ratio defined as a relationship between two numbers indicating how many times the first number contains the second.

i.e, a to b or a: b

By using ratio:

(pints)/(Fluid oz) =(0.0625)/(1)

As we need 16 fluid ounces

Multiply by 1  in the form of i,e (16)/(16)

⇒ (16)/(16) * (0.0625)/(1)= (16 * 0.0625)/(16)=(1 pints)/(16 fluid oz)

Therefore, for 16 fluid ounces we need 1 containers of 1 pints each
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