MATHEMATICS HIGH SCHOOL

Which statement is true for the equation 2x - 2x - 7 = -7?a. It has infinitely many solutions
b. It has two solutions
c. It has one solution
d. it has no solution

Answers

Answer 1
Answer:

Answer: Option 'a' is correct.

Step-by-step explanation:

Since we have given that

2x-2x-7=-7

We need to solve it first as follows:

2x-2x-7=-7\n\n2x-2x=-7+7\n\n0=0

Since L.H.S. = R.H.S.

So, it satisfies the equation for all x.

So, there will be infinitely many solutions.

Hence, Option 'a' is correct.
Answer 2
Answer: 2x-2x-7=-7 \n (2-2)x-7=-7 \n 0x-7=-7 \n-7=-7 \n true

The equation is satisfied for every x, so it has infinitely many solutions.
The answer is A.

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If a number is divisible by both 2 and 3 then we can say the number is divisible by A. 5. B. 2. C. 4. D. 6.

Answers

i believe it is d 6. you can divide 6 by both 3 and 2.
D. 6 because if one number is divisible by another number's factors, then the first number is divisible by the second number. for example, take the numbers 18 and 6.  the factors of 6 are 2 and 3. 18 is divisible by both 2 and 3, therefore it has to be divisible by 6.

How do i do problems that have fractions and a negative or a zero exponent with it?

Answers

Remember these:
\left((a)/(b)\right)^(-c)=\left((b)/(a)\right)^(c)\n\na^0=1

A square has a perimeter of 100cm What is the length of each side?

Answers

Answer:

each side of the square is 25cm

Step-by-step explanation:

this is because of two things:

1. a square has equal sides

2. the perimeter is all the sides added together.

so if you call the length of one side x, you can make this equation:

x + x + x + x = 100

combine like terms

4x = 100

divide both sides by 4

x = 100/4

x = 25

Answer:

25 cm

I hope this helps!

Find the surface area of a rectangular prism that is 16 inches long, 12 inches wide, and 5 inches high.
a. 960 in.2
b. 689 in.2
c. 714 in.2
d. 664 in.2

Answers

Okay so this would be length times width times height. So 16 times 12 is 192. 192 times 5 is 960. so your answer is 960 in^2 (960in2)
It is a. 960
All you do is multiply it all together

Justin won 20 games, tied 8 games & lost 14. What is Justin's ratio of total games to tied games? Please show how you get the answer as well.Thanks

Answers

Total games= 20+8+14 
                    =42 games
Fraction of tied games= 8/42
reduce the fraction so that it's 4/21
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Sam counted his heartbeats while resting. His heart beat 220 times in 4 minutes. Sam's heart beat at the same rate for the 4 minutes.

Answers

The equation for the number of beats per minute is 55 beats per minute

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the total number of beats be = A

Now , the value of A = 220 beats

The total time required for Sam to have 220 beats = 4 minutes

So , the number of beats of Sam in 1 minutes is calculated by

The equation will be

The number of beats of Sam in 1 minutes is = total number of beats  / total time required for Sam to have 220 beats

The number of beats of Sam in 1 minute is = 220 / 4

The number of beats of Sam in 1 minute is = 55 beats per minute

Therefore , Sam would have 55 beats every minute or 55 beats per minute

And for the period of 4 minutes , Sam would have

Number of beats for 4 minutes = number of beats of Sam in 1 minute x 4

Number of beats for 4 minutes = 55 x 4

Number of beats for 4 minutes = 220 beats in 4 minutes

Hence , The equation for the number of beats per minute is 55 beats per minute

To learn more about equations click :

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The equation is , 220 x 4 = 880 , if his heart beat the same time every minute than multiple how many times it beat time the minute !
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