MATHEMATICS HIGH SCHOOL

If x = -3, then x 2-7x + 10 equals

Answers

Answer 1

Answer:

Answer: 40

Step-by-step explanation: x=−3

(−3)2−(7)(−3)+10

=40

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In a particular class of 23 students, 11 are men. What fraction of the students in the class are women?

Answers

if 11/23 are men, then the women are (23 - 11)/23 = 12/23

£9.00 is shared between Amanda, Anita and Claire in the ratio of 8:5:2Amanda receives........
Anita receives........
Claire receives........

Answers

well, since the ratio is 8:5:2 you need 8 bits, then 5 bits then 2 bits. So 8+5+2=15, 9.00÷15=0.60, so 0.60=1 bit.
So for Amanda 0.60×8=4.80; for Anita 0.60×5=3.00 and for Claire 0.60×2=1.20
Amanda gets £4.80; Anita gets £3.00 and Claire gets £1.20.

To check your answer you add the money that was given to each individual together and if it equals the initial £9.00, then your answer is correct, you can also check this by seeing who has the most money, the person with the highest number should have the highest amount of money.

£9.00 is shared between Amanda, Anita and Claire in the ratio of 8:5:2
Amanda receives 9*(8/(8+5+2)) = 9*8/15 = £4.8
Anita receives 9*(5/(8+5+2)) = 9*5/15 = £3
Claire receives 9*(2/(8+5+2)) = 9*2/15 = £1.2

The surface area of this sphere is 1,519.76 square feet. What is the volume of this sphere?Use ग ≈ 3.14 and round your answer to the nearest hundredth.

Answers

Answer: 5572.45 cubic feet

Work Shown:

Use the surface area to determine the radius.

SA = 4*pi*r^2

1519.76 = 4*3.14*r^2

1519.76 = 12.56*r^2

r^2 = 1519.76/12.56

r^2 = 121

r = sqrt(121)

r = 11

The radius of the sphere is 11 feet.

Now we can determine the volume of the sphere.

V = (4/3)*pi*r^3

V = (4/3)*3.14*11^3

V = 5572.45333333333

V = 5572.45

The volume of the sphere is approximately 5572.45 cubic feet.

The result is approximate because pi = 3.14 is approximate.

If it takes 3 teaspoons of salt to make 15 muffins, then how much salt is needed to make 50 muffins?

Answers

When you look at this problem you have to think, how many teaspoons do you need for 1 cupcake so you would divide 3 by 15 and get .....

There are three questions, and three choices of answers (A,B and C) for each question. Given that only one of the possible choices (A,B and C) is correct for each question, state the probability that the student guesses:Q1: 1 correct answer. Q2: 2 correct answer
Q3: 3 correct answer. Q4: 0 correct answer

Please use tree diagram to explain.

Answers

q2—_-___-_-__—-__-_-_-___—-__-__—-__-_

What is the surface area of a rectangular prism that has a height of 5 cm, a width of 10 cm, and a depth of 4 cm?5 cm
4 cm
10 cm
[Not drawn to scale]
120 square centimeters
180 square centimeters
220 square centimeters
270 square cemtimeters

Answers

Answer:

180 squared centimetres

Step-by-step explanation:

5 x 10 = 50 x 2 = 100

5 x 4 = 20 x 4 = 80

100 + 80 = 180

Answer:

180

Step-by-step explanation:

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