MATHEMATICS HIGH SCHOOL

The value of y varies directly with x, and y=5 , when x=10. Find y when x=24

Answers

Answer 1
Answer:

Answer:

y=12

Step-by-step explanation:

5 is half of 10 so there for y is always half of x in this problem

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A lumberman stacks planks of wood, starting with 30 planks in a row. Each row he stacks has one less plank than the row below it. The last row he stacks has 15 planks. How many rows of planks has he stacked?12

15

16

18

Answers

I would say 15. If i am wrong i take full credit.

Solve the equation by completing the square x^2 - 7x - 4 = 0

A. 7.53, -0.53
B. -7.53, -0.53
C. -7.53, 0.53
D. 7.53, 0.53

Answers

the answer is A . 7.53 , -0.53

Answer:

a

Step-by-step explanation:

dog sled race extends 1049 miles, if a musher is twice as far from anchorage as from nome, how many miles has the musher completed,   round to the nearest whole number. can anyone help.

Answers

His distance from one end is ' D ', and his distance from the other end is ' 2D '.

The distance from one end to the other end is (D + 2D) = 3D .

3D = 1,049 miles

Divide each side by 3 :

D = 1,049 / 3 = 349 and 2/3 miles .

The question doesn't tell which end he started from, and where he's headed,
so I guess you have to know that this is the Iditerod race, it STARTS in Anchorage,
and it ENDS in Nome. 

He is ' 2D ' from Anchorage, so he has completed [ 2 x (349 and 2/3 miles) ] =
699 and 1/3 miles.

Rounded to the nearest mile, that's 699 miles.

Bob is 15 and susan is 21, find the ratio of his age to hers____________

Answers

Ratios can be expressed with a colon, fraction bar, or the word 'to' inbetween.

Bob's age:Susan's age
Bob's age/Susan's age
Bob's age to Susan's age

Of course we can substitute their ages here to get our ratio.

15:21, 15/21, or 15 to 21.

Just like a fraction, it can be simplified.
If you multiply/divide the top and bottom by the same number the ratio stays the same, just like how 1/2 = 2/4 = 3/6.

15 and 21 are both divisible by 3, so our ratio 15:21 can simplify to 5:7.
so ratio of bob to susan=bob:susan
bob=15
susan=21
bob:susan=15:21
these are like fractions or equal signs so
15:21=5:7

ratio is 5:7

How are rate of change and slope different?

Answers

Answer:

The vertical change between two points is called the rise, and the horizontal change is called the run. The slope equals the rise divided by the run: . ... If coordinates of any two points of a line are given, then the rate of change is the ratio of the change in the y-coordinates to the change in the x-coordinates.

Step-by-step explanation:

A university's freshman class has 5000 students. 80% of those students are majoringin Computer Science. How many students in the freshman class are Computer
Science majors?

Answers

Answer:

4000 students

Step-by-step explanation:

Number of computer science majors = 80% of 5000

                                                              = 0.8 * 5000

                                                              = 4000

Answer:

4000

Step-by-step explanation:

5000 * .8 is 4000
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