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77julia77 [94]
3 years ago
7

This is timed please help

Mathematics
2 answers:
Naya [18.7K]3 years ago
7 0
B. All real numbers greater than -1
lana66690 [7]3 years ago
3 0

Answer:

B.) All Real numbers greater than -1

<em><u>Unit Test Answers: For a 92%</u></em>

<em>**Go to question number 18 for the answer!**</em>

( Marking me brainliest would be great)

1.) B -3/2

2.)A -9

3.) B- b>0 and b\neq 1

4.)A

5.) D all real numbers greater than 3

6.)D 110Db

7.)C 5

8.)D 80

9.)B 3 times louder

10.)D

11.)A y<0

12.)A

13.)B

14.)D x=95

15.)B

16.)C x=-4

17.)B x=4

18.)B - All real numbers greather than -1

19.)A - Approximately x=0.46

20.)C 1/4

21.)D - 4logx + 1/2 log12 (x^2-2)- 5log 12 (x+1)

22.) C 1.5

23.)A -1

24.)D Translate each point 3 units to the left

25.)D 1.796

<u>I got a total of 92% which is a total of 23/25 two are wrong.</u>

It's a great grade !

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Nataly [62]

4)

Non linear:

y = 6 -x^2

y = 2x^2 + 2

y = x^3

5)

Rate of change is also the slope

= (72 - 69) / (51 - 48)

= 3/3

= 1

Rate of change = 1

6)

First you need to find slope

(3,0) and (5,2)

Slope = (2 - 0)/(5-3) =2/2 = 1

Equation

y - 0 = 1(x - 3)

y = x - 3

Answer:

Tyler's function is correct as y = x - 3, it matched the above.

6 0
3 years ago
Use Use an element argument to prove the state (A-B)U(ANB) = A" is true. he statement "For all sets A and B,
lys-0071 [83]

Answer with Step-by-step explanation:

We have to prove that

(A-B)\cup (A\cap B)=A is true for all sets A and B

Let x\in(A-B)\cup (A\cap B)

Then x\in(A-B) or x\in(A\cap B)

x\in A and x\notin B or x\in A\;and\; x\in B

Hence, x\in A

Conversely ,Let x\in A

Then x belongs to A and x does not belongs to B then

x belongs to A- B

Or  x belongs to A and x belongs to B then x belongs to A \cap B

Hence, x\in( A-B)\cup (A\cap B)

Therefore, (A-B)\cup (A\cap B)=A

3 0
3 years ago
Read 2 more answers
Suppose that the probability that your mail is delivered before 2 pm. 90. What is the probability that your mail will be deliver
Nataliya [291]

Answer:

Step-by-step explanation:

1. The probability that your mail is delivered before 2 pm is 0.9, so the probability that the mail is delivered at 2 pm or after 2 pm (so not before 2 pm) is 1-0.9=0.1.

Remark: 0.9=9/10=90/100=90%, and 0.1 is 10%

2. Probability of the mail being delivered before 2 pm for 2 consecutive days is  

3. take a look at the picture attached, the tree diagram is another method we could use.

3 0
3 years ago
Read 2 more answers
In the right triangle shown, mZA = 45° and AB = 12. How long is BC?
iragen [17]

Answer:

I think BC is 45°÷2 Or 12÷2

Step-by-step explanation:

so the answer is 15° or 6

6 0
3 years ago
Frank is having the car pets in his house cleaned. The cost of the cleaning is calculated from the area of the carpets. C= the c
asambeis [7]

Answer:

Cost of the cleaning, C is the dependent variable

Area of the carpet, a is the independent variable

Step-by-step explanation:

cost of the cleaning is calculated from the area of the carpets

C= the cost of the cleaning a= the area of the carpets.

Cost of the cleaning, C is the dependent variable

Area of the carpet, a is the independent variable

A dependent variable is a variable which depends on other factors to exist. They take their values based on other factors. Their value is changed as a result of a change in independent variable

An independent variable is a variable which does not change as a result of the change in other factors. They take their values irrespective of external factors around them.

5 0
3 years ago
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