Can someone please help me with the problems that aren't done please ASAP

Answers

Answer 1

Answer: I believe #8 would be 0.6, and #10 would be 65%.

Answer 2

Answer: Number 2. You first need to conver those two fractions to decimals to so 3/5 is 0.60 and 1/4 is 0.25 so this is the order: 1/4 , 0.4 , 0.55 ,3/5

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a lab technician mixed a 690 ml solution of water and alcohol, if 3% of the solution is alcohol, how many milliliters of alcohol were used and how many milliliters of water were used?

Answers

To get the milliliters of alcohol used, we must multiply 690 by 0.03. If we do this, we will get 20.70, which means that 20.70 milliliters of alcohol were used. On the other hand, we can get the milliliters of water used through two ways: the first one is by simply subtracting 20.70 from 690, which will give us the answer 669.30. Another would be by multiplying 690 by 0.97, which will also yield the answer 669.30. The number of milliliters of water used was 669.30.

To solve a three-variable system of equations, you can use a combination of the elimination and substitution mehtods.True or False ...?

Answers

It is true that in order to solve a three-variable system of equations, you can use a combination of the elimination and substitution methods.
This is the best way to solve these kinds of equations, as you get rid of the unnecessary variables.

Use a factor tree to find the prime factorization of 164

Answers

On the first hand, 164 is not a prime number. Prime numbers are numbers that can only be divided by 1 or itself which is also greater than 1 thus;
Prime divisor of 164= 2,2,41 or 2^2 x 41
Here is the factor tree of 164:
164
/     \
2     82
/       \
2      41
Prime factorization of a number determines the set of prime integers multiplied together to make the original number.

Answer:

2 * 2 * 41

Step-by-step explanation:

If four times a number plus 3 is 11, what is the number?A. 4
B. 5
C. 16
D. 2

Answers

It is very important to readthe question very minutely before going for solving the problem.
Let us assume the unknown number to be = x
Then
4x + = 11
4x = 11 -3
4x = 8
x = 8/4
= 2
So we can see from the above deduction that the unknown number is 2. The correct option among all the options given in the question is option "D". I hope the procedure is clear enough for you to understand.

Use the domain and range of each of the following relations to determine which is a function. A.) {(3, -3), (9, -6), (0, -9)}
B.) {(3, -3), (9, -6), (3, -9)}
C.) {(3, -3), (9, -6), (9, 2), (0, -9)}
D.) {3,9,0,-4}

Answers

Answer:

The function is expressed by answer A

Step-by-step explanation:

A function is a mathematical expression in which, for an independent variable , usually called x, we obtain one and only one value after applying the function, usually known as the dependent variable y.

D is not a function as we do not have two corresponding values or coordinate pairs. We only have a list of numbers

In C, B and A we have pairs of coordinate values expressed as (x,y) the independent and dependent variable.

In expression B, we see that the for the value of x=3 in ponts 1 (3.-3) and (3.-9) , the value 3 has two resulting values of y , -3 and -9, so this coordinates do not represent a function.

In option C, occurs something similar in this case with x =9. x=9 has two values in y : y=-6 and y= 2 so these points do not define a function

In A each x value (3.9.0) has a unique avlue of y (-3,-6,-9) so this is a function.

the answer js A. the first one

10 is 60% of what number please help