9 students volunteer for a committee. how many different 2-person committees can be chosen?

Answers

Answer 1

Answer: The answer is C9,2 = 9.8/2 =36

Answer 2

Answer:

Answer: 36 is your answer

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What is 3x+3=-27 what is x
The floor of a rectangular deck has an area of 600 square feet. The floor is 20 feet wide. How long is the floor? A. 30 ft. B. 20 ft. C. 15 ft. D. 45 ft.
If 25 is 40% of a value, what is that value?
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A ten-foot-long board is cut into three pieces. The second piece is half as long as the first. The third piece is 4 feet longer than the second. How long is the first piece?

Answers

Let's say the second piece is x ft long
The first piece is 2x ft long
The third piece is x+4 ft long
All of the pieces should add up to 10ft
x+2x+x+4=10
4x= 6
x=1.5ft
The first piece is 2x ft long=3 ft long

24% of 1,321 is how much?

Answers

Percentage that needs to be determined = 24%
The quantity from which the percentage has to be determined = 1321
Then
24% of 1321 = (24/100) * 1321
= 31704/100
= 317.04
So from the above deduction we can easily say that 24% of the number 1321 is 317.04. I hope the procedure is not very complicated for you to understand. You can use this method for solving similar type of problems in future without requiring any help from anyone. Only be careful while calculating. Other than the calculation part, there is nothing tough about the problem.

Can someone help me please?1. Refer to the triangle below. If a = 3 and b = 3,
A. Find the exact length of c in unsimplified radical form
B. Find the exact length of c in simplified radical form
C. Find c to the nearest hundredth
**I put the pic down below**

2. Consider the numbers 4/13 and 3/10 .
A. Compare the numbers.
B. Find a rational number between the two given numbers.

3. Use the Babylonian method to approximate √19 to the nearest hundredth.

Answers

For 1) Use the pythagorean theorem and the formula for it is a^2+b^2=c2
so that will be 3^2+3^2=c^2
9+9=c^2
18=c2
then
$√(18) which is √(9(2)) √(9) √(2) the finally 3 √(2) ---- is the unsimplified formsimplified form is$ ≈4.2426
and the nearest hundredth 4.24

The correct answers are:

#1: A) c = √18

B) c = 3√2

C) c = 4.24

#2: A) 4/13 > 3/10

B) 79/260

#3: 4.36

Explanation:

#1: A) We use the Pythagorean Theorem to solve this:

a² + b² = c²

3² + 3² = c²

9 + 9 = c²

18 = c²

Taking the square root of each side:

√18 = √c²

√18 = c

B) To simplify √18, we first find the prime factorization of 18:

18 = 9*2

9 = 3*3

This gives us

18 = 3*3*2

When we take the square root, we are looking for pairs. We have a pair of 3's; this means we take a 3 out:

3√2

C) In the calculator, we see that 3√2 = 4.24.

#2: A) First, we find a common denominator. The first thing that both 13 and 10 will divide into is 130:

(4*10)/130; (3*13)/130

40/130; 39/130

Since 40 > 39, this means that 4/13 > 3/10.

B) There is not enough space between the two fractions to use 130 as the denominator; we will double that to 260:

(40*2)/260; (39*2)/260

80/260; 78/260

The fraction between these two would be 79/260.

#3: Using the Babylonian method, we first make a guess. Since 9 is nearly half of 19, we will start there.

Next, we divide 19 by our guess:

19/9 = 2.111

We average this quotient with our guess:

(9 + 2.111)/2 = 11.111/2 = 5.5555

This is our new guess. Now divide 19 by this guess:

19/5.5555 = 3.4200342

Average this with our guess:

(5.5555+3.4200342)/2 = 4.4877671

This is our new guess. Divide 19 by this guess:

19/4.4877671 = 4.233731291

Average this with our new guess:

(4.4877671+4.233731291)/2 = 4.360749196

This is our new guess. Divide 19 by this guess:

19/4.360749196 = 4.357049476

Average this with our new guess:

(4.360749196+4.357049476)/2 = 4.358899

Make this our new guess. Divide 19 by this guess:

19/4.358899 = 4.3588988

Average this with our guess:

(4.358899+4.3588988)/2 = 4.3588989

Since the hundredths place has been the same the last few lines, we round to that: 4.36.

13 over 16 minus 3 over 8

Answers

Answer:

$(7)/(16)$

Step-by-step explanation:

=> $(13)/(16)-(3)/(8)$

LCM = 16

=> $(13-6)/(16)$

=> $(7)/(16)$

Answer:

7/16

Step-by-step explanation:

13/16 - 3/8

Lowest common multiple is 16.

= 13/16 - 6/16

Subtract the fractions.

= (13-6)/16

= 7/16

Solve for the variable in 7 ∕28 = 25∕ x A. 20 B. 100 C. 4 D. 5

Answers

The solution to the equation 7/28 = 25/x is x = 100.

What is the solution to the equation?

Given the equation in the question:

7/28 = 25/x

To solve for the variable x in the equation 7/28 = 25/x, first, we cross multiply.

7/28 = 25/x

Cross-multiplying, i.e multiplying the numerator of the first fraction with the denominator of the second fraction and vice versa:

Hence:

7 × x = 28 × 25

7x = 700

Now, isolate x by dividing both sides by 7:

7x/7 = 700/7

x = 700/7

x = 100

Therefore, x has a value of 100.

Option B) 100 is the correct answer.

Learn more about equations here: brainly.com/question/14686792

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$(7)/(28)$ =25 over x

OK what can go in to 25?

5

25/5=5/25/7/28/x=5
X= 5

At camp last summer the ratio of boys to girls was 3:5 if there was a total of 160 campers how many girls were there

Answers

I believe there is 100 girls or something close to that.

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