MATHEMATICS MIDDLE SCHOOL

What is -7/9 x 3/5
PLEASE HELP

Answers

Answer 1
Answer: Your answer would be -7/15
Answer 2
Answer: -7/15
Reduce the 9 to 3 and the 3 to 1. Next, multiply straight across. Negative times positive = negative. Therefore, -7/9 x 3/5 = -7/15

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I'm confused. I don't get it.
Missy counts 48 crayons inside her box. One sixth of the crayons have never been used. What is the ratio of the crayons in the box which have been used to the crayons which have never been used? Write you answer, in lowest terms, three different ways.
Help? I’m not really understanding this.
What's the answer to v+9/3=8
A rectangular swimming pool is 19 meters long, 14 1 2 meters wide, and 4 1 2 meters deep. What is its volume?

What is the length of a side of a cube with a volume of 216 in3

Answers

\sf volume~of~a~cube = side^3\n\nv = 216\n\ns^3 = 216\n\ns^3 = 6* 6* 6\n\ns^3 = 6^3\n\n\boxed{s = 6}

s = 6 in
i hope you have a wonderful day    a≈6in
 

What is the firts step into converting a percent into a fraction​

Answers

Step-by-step explanation:

Step 1. Find a number you can multiply the bottom of the fraction by to get 100.

Step 2. Multiply both top and bottom of the fraction by that number

Step 3. Then write down just the top number with the "%" sign

HOPE IT HELPS YOU

Elisa has 6 1/4 pounds of flour. She would like to divide the flour equally into 5 bags.How much flour will be in each bag?

Drag and drop the correct answer to complete the statement.
Each bag will have exactly________pounds of flour

Answers

1&1/4 POUNDS IN EACH BAG....
convert to improprer
6 and 1/4=6+1/4=24/4+1/4=25/4
x divided by y is teh same as x times 1/y
6 and 1/4 divided into 5 is the same as 6 and 1/4 times 1/5 whichis the same as
25/4 times 1/5=25/20=5/4=1 and 1/4
each bag has 1 and 1/4 lb of flour

Angle QPS is supplementary to angle psr. Also QPS=(2x+12) and PSR is x. Find the value of x. Can you help

Answers


What does 'supplementary' mean ?
It means the two angles add up to 180 degrees.
So ...
                                                    (2x + 12) + (x)  =  180

Eliminate parentheses:             2x + 12   +   x   =  180

Add up the 'x' terms:                  3x + 12             =  180

Subtract 12 from each side:     3x                      =  168

Divide each side by  3 :              x                      =   56 degrees

PLEASE SOMEONE HELP AND EXPLAIN THE FIRST ONE PLEASE SO THE HALF LIFE OF A RADIOACTIVE KIND OF POTASSIUM IS 12 HRS . HOW MUCH WILL BE LEFT AFTER 36 HRS, IF YOU START WITH 64 GRAMS OF IT? SO I DID A=64(1/2)^36 POWER IS THAT THE ACCURATE FORM PLEASE I NEED HELP ASAPBTW THIS IS EXPONENTIAL DECAY

Answers

Don't get carried away with the exponent.

The exponent is not the number of years or the number of hours.
The exponent is the number of half-lifes.

In this one, the half-life is 12 hours, and they want to know
how much is left after 36 hours.  36 hours is 3 half-lifes.
The formula that you did is beautiful and almost perfect.
Just change that ugly exponent to the number of half-lifes (3)
and the answer will jump out at you.
half life formula is
F=P(1/2)^(t/h)

F=furure or ending amount
P=present amount
t=time elapsed
h=time the half life is


F=64(1/2)^(36/12)
F=64(1/2)^(3)
F=64(1/8)
F=8 grams

Which algebraic expression is a polynomial?4x? - 3x + 2
6x2 + χ? - 5
8x2 + x
-2x +
Ο

Answers

\text{A polynomial must have multiple terms in its expression}\n\n\text{That means we could eliminate the last answer choice automatically}\n\n\text{There are different types of polynomials, in which you could see that}\n\text{there is a trinomial in one of the answer choices}\n\n\text{Your best answer choice would be the 2nd one:}\,\,6x^2+x+5\n\n\text{This is because there are different terms and there are multiple of them}
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