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ElenaW [278]
2 years ago
9

• A certain test consists of multiple-choice questions

Mathematics
1 answer:
Elodia [21]2 years ago
3 0

Answer: 21

Step-by-step explanation:

My teacher just did it

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Solve for b, i already solved for A <br> will give brainliest
larisa86 [58]

Answer:

b=23 degrees

Step-by-step explanation:

a was 66 degrees so b=23 degrees   180-90-66=23

6 0
3 years ago
−9x (5x+4 ) +10 (x+3) can someone please solve his for me thank u step by step please i really need to find out how to do it
Ivahew [28]

Answer:

-45x^{2}-26x+30

Step-by-step explanation:

So first you let's divide this equation into three parts.

Part one -9x(5x+4)

  1. Step one: you have to distribute the -9x to the numbers in the parentheses. That would leave us with a -9x*5x = -45x^{2} and -9x*4 = -36x
  2. Step two: Put the answers together. That would leave us with -45x^{2}-36x.

Part two 10(x+3)

  1. Step one: you have to distribute the 10 to the numbers in the parentheses. That would leave us with a 10*x = 10x and 10*3 = 30
  2. Step two: Put the answers together. That would leave us with 10x+30

Part three solve

  1. Step one: combine and put together what you have solved for. That would leave us with a -45x^{2}-36x+ 10x+30
  2. Step two: combine like terms. The like terms here are -36x and 10x. When you combine them you would get -26x.
  3. Step three: Write the equation in standard form. Therefore the answer is -45x^{2}-26x+30.

Let me know if anything is confusing!

5 0
2 years ago
Identify the vertex of the graph. Tell whether it is a minimum or maximum.
Olegator [25]

Answer:3333333333333333Step-by-step explanation:

4 0
3 years ago
Write a mathematical sentence that expresses the information given below. Use t as your variable name. If necessary:Susanne chec
Feliz [49]

Answer:

t+8>82^{\circ}

Explanation:

We were given that:

Let "temperature" be represented by "t"

Suzan checks the temperature at 11:00. If the temperature rises by 8 more degrees, it will break the record high temperature for the day which is 82 degrees

This information is mathematically represented as:

t+8>82^{\circ}

7 0
1 year ago
What is the product of 13 and 15
White raven [17]

Answer:

195

Step-by-step explanation:

13 * 15 = 195

4 0
3 years ago
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