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Answer: tgA=12/5

Step-by-step explanation:

[tex]\displaystyle\\0^0 < B < 90^0\\sin^2B+cos^2B=1\\sin^2B+cos^2B-sin^2B=1-sin^2B\\cos^2B=1-sin^2B\\cos^2B=1-(\frac{5}{13})^2\\\\cos^2B=1-\frac{5^2}{13^2} \\\\cos^2B=1-\frac{25}{169} \\\\cos^2B=\frac{1*169-25}{169} \\\\cos^2B=\frac{144}{169}\\\\\sqrt{cos^2B} =\sqrt{\frac{144}{169} } \\\\cosB=б\sqrt{\frac{12^2}{13^2} } \\\\cosB=б\sqrt{(\frac{12}{13})^2 } \\\\cosB=б\frac{12}{13} \\\\As,\ 0^0 < B < 90^0\\\\cosB=\frac{12}{13} \\\\[/tex]

[tex]\displaystyle\\tgB=\frac{sinB}{cosB}\\\\ tgB=\frac{\frac{5}{13} }{\frac{12}{13} } \\\\tgB=\frac{5}{12} \\\\tgA=tg(90^0-tgB)\\\\tgA=ctgB\\\\tgA=\frac{1}{tgB} \\\\tgA=\frac{1}{\frac{5}{12} }\\\\ tgA=\frac{12}{5}[/tex]

The statements are:

a) False

b) True

c) True

d) False.

e) True.

Here we have the two sets:

A = {2, 5, 6, 7, 9, 10) and B = {2, 5, 6}

The first statement is:

a) 3 E A

That says "the number 3 belongs to set A". That clearly is false, as the set A does not contain the element 3.

b) B C A

The statement says:

Set B is included in set A. This is true, as all the elements of set B also belong to set A.

c) A n B = {2,5,6}

This is true, that is the intersection between A and B (the intersection between two sets is the set of common elements)

d) AU B = {7,9,10}

This is false, U refers to the union between the two sets, here we should have

A U B = A = {2, 5, 6, 7, 9, 10}

e) Anø=Ø

This is true, trivially all the sets contain the element {∅}

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Answer:

For [tex]\sqrt{25}[/tex] it will be plus or minus [tex]\sqrt{5}[/tex]

For [tex]\sqrt{-25}[/tex] it will be plus or minus [tex]\sqrt{5i}[/tex]

Step-by-step explanation:

Well for [tex]\sqrt{-25}[/tex] it will be 5i

Because i = -1  

Answer:

h = sqrt (4w/P)

Step-by-step explanation:

P = 4w/h^2

h^2 = 4w/P

h = sqrt (4w/P)

Answer: 10 ounces for $2.40

Step-by-step explanation: The trick behind these problems, always divide. 2.40/10ounces is $0.24. 2.08/8ounces is $0.26. Better deal, therefore smaller answer of the 2, because it's cheaper.

Answer:

Choice C 1.8 Million

Step-by-step explanation:

Average rate is also known as the slope.

Since the slope formula is m=rise/run, we can set up the equation:

m= (101-11)/(2000-1950)

 = 90/50

 = 1.8

Answer:

{13}

Step-by-step explanation:

A ∩ B ∩ C = the set of all elements that are in sets A and B and C

This is indicated in the Venn diagram by the region that is common to all three circles which is the darkly shaded region. There is only one element that is included in this region and that is 13

In roster form we write it as {13}

Answer:

9) x = 62 10) x = 61 11) x = 7

Step-by-step explanation:

9) x + 118 = 180

- 118. - 118

x = 62

10) 2x + 3 + x - 6 = 18

Add like terms

x = 61

11) x + 16 = 4x - 5

x = 7

Rebounds did Mark have is x = 21

The Option C is correct.

Mark and Gary had a basketball game Saturday.

and, Mark had three times as many rebounds as Gary.

Together they had 28 rebounds.

To find the how many rebounds did Mark have?

Now, According to the question:

Based on the given conditions:

Let x be the rebounds mark

Mark had three times rebounds as Gary

then, formulate ;

x × (1 + 3)÷ 3 = 28

Solve the equation:
[x × (1 + 3)] / 3 = 28

(x × 4) / 3 = 28

x = 28 × [tex]\frac{3}{4}[/tex]

x = 21

Hence, Rebounds did Mark have is x = 21

The Option C is correct.

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Answer:

87/100

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

f(x)-g(x)=2x²+4x-6-[2x²+2x+8]=2x²+4x-6-2x²-2x-8=2x-14

Answer:

0.05

Step-by-step explanation:

Answer:I'm pretty sure it would be C but that might be wrong

Step-by-step explanation:

Answer:

Seaver Books and Ethical Practice

Yes.  Seaver Books acted ethically in reinstating the debt of The Learning Center and not that of the Academy of Basic Education.

Step-by-step explanation:

Writing off a doubtful debt or account is a determination that is done on a case-by-case basis.  When a customer's ability to repay a debt is in doubt, the reasonable act will be to write off the debt from the balance to ensure prudent accounting.  When the customer's ability to settle the debt is reassessed to be favorable, the debt can be reinstated accordingly.  However, it is better to restate the debt after the customer has settled the account and not before.  The good news is that customers are not usually informed that their accounts have been written off as doubtful and need not be informed of the reinstatement.

Answer:

1.5 hrs

Step-by-step explanation:

Answer:

width=10m

length=15m

Step-by-step explanation:

Let the width be k.

LXW=Area

5 m+ k x k=150m²

5 m x k²/5 m=150 m x m/5 m

k²=√100m

k=10 m

Answer:

3 7/12

Step-by-step explanation:

There are 12 inches in 1 feet. So 43 inches would be 43/12=3 7/12 feet.

This question is based on the given solving an equation. Therefore, the value of n for (9n) (8n+8) is 0 and -1.

Given:

(9n) (8n+8)

We need to determined the value of n.

According to the question,

It is given that, expression (9n) (8n+8).

For finding the value of n, we would be equate the given expression is equal to zero.

⇒ (9n) (8n+8) = 0

Now, calculating the value of n. We get,

⇒ (9n) (8n)+(9n) (8)

Then, solving above expression further. We get,

⇒ [tex]\bold{72 n^2+ 72n = 0}[/tex]

Now, taking common 72 n. We get,

⇒ 72n (n + 1) = 0

⇒ 72 n = 0 and (n+1) = 0

We get,

n = 0 , -1

Therefore, the value of n for (9n) (8n+8) is 0 and -1.

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Answer: Maybe it's the third one I'm not completely sure. don't take my word for it.

Step-by-step explanation:

Answer:

I hope that's help you.

m = -7

t = 2

n = 10

Answer:

The answer is -15.3

Step-by-step explanation:

all u had to do was subtract -12.6 from 2.7

Answer:

y = 16

(3, 16)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Step-by-step explanation:

Step 1: Define

y = 5x + 1

x = 3

Step 2: Evaluate

Answer:a

Step-by-step explanation:

Answer:

7+4

Step-by-step explanation:

Answer:

7 + 2x

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

i just know I took the test and I choose 90 and got it wrong