3+z=-19 true, false, or open

Answers

Answer 1
Answer:

subtract 3 from both sides to get 3+z=-19 3+z-3=-19-3 z = -22 So it's only true when z = -22. This means that it's neither 100% true nor 100% false. So it's an open statement or sentence

Answer 2
Answer:

First thing you would do is subtract 3 from both sides to get 3+z=-19 3+z-3=-19-3 z = -22 So it's only true when z = -22. This means that it's neither 100% true nor 100% false. So it's an open statement or sentence


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What is the y-intercept of the graph?

Ignore the answer l put

Answers

Answer:

5/+5

it is where the red line crosses the vertical line and the number it crosses

What is the value of the expression?

(–2)5

Answers

The answer of -10

what is expression?

An expression in math is a sentence with a minimum of two numbers/variables and at least one math operation in it. Let us understand how to write expressions. A number is 6 more than half the other number, and the other number is x. This statement is written as x/2 + 6 in a mathematical expression. Mathematical expressions are used to solve complicated puzzles.

An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division. The terms involved in an expression in math are:

  • Constant: A constant is a fixed numerical value.
  • Variable: A variable is a symbol that doesn't have a fixed value.
  • Term: A term can be a single constant, a single variable, or a combination of a variable and a constant combined with multiplication or division.
  • Coefficient: A coefficient is a number that is multiplied by a variable in an expression.

Given:

(–2)5

Using integer (-)*(+)= (-)

=-2*5

=-10

Hence, the expression is -10.

Learn more about expression here:

brainly.com/question/14083225

#SPJ2

(-2)5 = (-1 *2)5 = -1(2* 5) = -1(10) = \boxed{-10}

You make 72 cookies for a bake sale.this is 20%of the cookies at the bake sale.how many cookies are at the bake sale?

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number of cookies at the bake sale = 72 * 100 / 20 = 360 cookies

Round to the nearest whole number 8.36

Answers

we know that

To Round a number

a) Decide which is the last digit to keep

b) Leave it the same if the next digit is less than 5 (this is called rounding down)

c) But increase it by  1 if the next digit is  5 or more (this is called rounding up)

In this problem we have

8.36

We want to keep the digit 8

The next digit is 3 which is less than 5, so no change is needed to 8

therefore

the answer is

8


The answer is 8, because 3 is less than 5 and we are rounding it to the nearest whole number. 

9 is 12 percent of what number? ( show your work)

Answers

For this question, we want to find out what 9 / 12 equals as a percentor x / 100. Therefore, we have a proportion here and can say:9/12 = x/100Now, at this point, we can cross multiply to get:900 = 12xNow, divide both sides by 12 to get x alone and find that:x = 75 <==== FINAL ANSWER
so 9 is 12% of 75!
I hope that helps you out! Please let me know if you have any other questions!

PLEASE HELP!!!Graph the system of inequalities presented here on your own paper, and then use your graph to answer the following questions:

Y>3x+10.
Y<-3/4x-1

PART A: Describe the graph of the system, including shading and the types of lines graphed. Provide a description of the solution area.

PART B: Is the point (8,10) included in the solution area for the system? Justify your answer mathematically.

Answers

Part A:
I have attached the graph of this system of inequalities.

Part B:
Plug in (8,10) into both equations

10 > 3(8) + 10
10 > 24 + 10
10 > 34

This is false!

10 < (-3/4)(8) - 1
10 < (-3)(2) - 1
10 < -6 - 1
10 < -7

This is also false!

So, (8,10) is not included in the solution area for the system.