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3 years ago

What is the discount on a stethoscope that is marked down from $300 to $250?

1 answer:

3 0

To find this answer you simply divide 250$ by 300$ you would then get 83% that is not the answer though you then subtract 83 from 100 and get 17 and that is the discount

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Does 17 divide each of these numbers?<br> a) 68<br> b) 84<br> c) 357<br> d) 1001

vova2212 [387]

Answer:

A and C divide by 7

Step-by-step explanation:

68÷17=4

357÷17=21

5 0

2 years ago

X=y which y=7xX what is the answer

77julia77 [94]

I think it is x=7/2.

8 0

4 years ago

How many tissues should the kimberly clark corporation package of kleenex contain? researchers determined that 60 tissues is the

Agata [3.3K]

Answer:

Step-by-step explanation:

For the null hypothesis,

µ = 60

For the alternative hypothesis,

h1: µ < 60

This is a left tailed test

Since the population standard deviation is not given, the distribution is a student's t.

Since n = 100,

Degrees of freedom, df = n - 1 = 100 - 1 = 99

t = (x - µ)/(s/√n)

Where

x = sample mean = 52

µ = population mean = 60

s = samples standard deviation = 22

t = (52 - 60)/(22/√100) = - 3.64

We would determine the p value using the t test calculator. It becomes

p = 0.00023

We would reject the null hypothesis if α = 0.05 > 0.00023

5 0

4 years ago

Rewrite the expression -2a(a+b-5)+3(-5a+2b)+b(6a+b-8)

Nimfa-mama [501]

First separately:
$-2a(a+b-5) = -2a^{2}-2ab+10a$
$3(-5a+2b) = -15a + 6b$
$b(6a+b+8) = 6ab+b^{2}+8b$

Then you add then all together and get:
$-2a^{2}-2ab+10a-15a + 6b+ 6ab+b^{2}+8b =$
$-2a^{2}-5a+4ab+14b+b^{2}$

5 0

3 years ago

Read 2 more answers

To estimate the number of people in Springfield, population 10,000, who have a swimming pool in their backyard, 250 people were

amid [387]

Multiply 119 by 40 to get 4760 people who have a pool.

5 0

3 years ago