MATHEMATICS HIGH SCHOOL

Which equation below is a direct variation?a. 0.005x=y
b. x 2 = y
c. y 2/3 = x
d. y = 2x 6

Answers

Answer 1
Answer: direct variation mean kx = y 

so from this result that the first one choice a. is right ,correct sure 

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Find two consecutive number which add up to 89.
What are the steps.

Answers

let the first number be x
the second number is (x + 1)
according to the condition,
x+(x+1)=89
or, 2x+1=89
or, 2x=89-1
or, 2x=88
or, x=88/2
or, x = 44

therefore,
first number = 44
second number = 45
irst lets represent
x as first number and x+1 as ne t consecutive number

x+x+1=89
2x=88
x=44

therefore the consecutive numbers are 44 and 45

A store buys shoes for $40, then sells them to customers for $160. What is the percent mark-up for the price of the shoes?

Answers

Answer:

its 120 your supposed to divide 120 ÷ 100% and ur answer will be 120

In an experiment using 30 mice, the sample proportion of the mice that gained weight after a drug injection is 0.65. What is the 99.7% confidence interval for the actual proportion in the population?a)between 0.602 and 0.697

b)between 0.563 and 0.737

c)between 0.476 and 0.824

d)between 0.389 and 0.911

Answers

The answer is B.) between 0.563 and 0.737

Jaida has $200 to spend on flowers for a school celebration. She decides that the only flowers that she wants to buy are roses and carnations. Roses cost $1.45 each and carnations cost $0.65 each. Jaida buys enough roses so that each of the 75 people attending the event can take home at least one rose. Write an inequality to represent the cost constraint.

Answers

Answer:

1.45x+0.65y\leq 200

Here, x denotes the number of roses used for a school celebration and y denotes the number of carnations used for a school celebration.

Step-by-step explanation:

Let x denotes the number of roses used for a school celebration and y denotes the number of carnations used for a school celebration.

Cost of 1 rose = $1.45

Cost of x roses = \$1.45x

Cost of 1 carnation = $0.65

Cost of y roses = \$0.65y

Total cost spend on flowers = 1.45x+0.65y

Total amount with Jaida = $200

So,

the inequality to represent the cost constraint is 1.45x+0.65y\leq 200

Mn-rs=x +2p solve for p

Answers

Answer:

p = (mn-rs - x)/(2)

Step-by-step explanation:

if \: mn-rs=x +2p \n x +2p = mn-rs \n 2p = mn-rs - x \n p = (mn-rs - x)/(2)

A six sided die, with sides numbered 1,2,3,4,5, and 6, is tossed. What is the probability of tossing a number less than 3

Answers

ok so probablit is
(desired outcomes)/(total possible outcomes)
ok so total possible is 6 since 6 numbers
less than 3 means all numbers less than 3 not including 3
there are 2 (1 and 2 are less than 3)
2=desired outcomes
6=total possible
2/6=1/3

probability is 1/3
2/6 reduced to simplest terms.... being 1/3 so your answer would be 1/3 hope i helped(1 and 2 are the only numbers less then 3 and since there are 6 sides the possibility is 2/6 but it probably wants it reduced, so the answer is 1/3... whenever you can reduce to simplest terms ALWAYS reduce...)
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