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3 years ago

A SOLUTION CONTAINS 60% WATER, 15% BLEACH AND THE

Mathematics

1 answer:

Allushta [10]3 years ago

6 0

Answer:

20 ounces of cleaner

Step-by-step explanation:

Water 48 oz is 60% of unknown total. 60% = 3/5. Create equation and solve

48= 3x/5. 240= 3x. 80 = x

Total of water, bleach and cleaner is 80 ounces

60% + 15% = 75%

100% - 75%= 25% cleaner

.25 × 80 = 20 ounces

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Find the slope of the line 7x-4y=10

Harman [31]

Answer:

The slope is $m=(7/4)$

Step-by-step explanation:

we know that

The equation of the line into slope intercept form is equal to

$y=mx+b$

where

m is the slope

b is the y-coordinate of the y-intercept

In this problem we have

$7x-4y=10$

Convert to slope intercept form

Isolate the variable y

$4y=7x-10$

$y=(7/4)x-(10/4)$

$y=(7/4)x-(5/2)$

The slope is $m=(7/4)$

5 0

3 years ago

PLEASE HELP I WILL MARK BRILLIANT WHOEVER CAN ANSWER this question And I will only accept if you explain with a well answer Than

Sveta_85 [38]

Move it to the right 1 unit and up 3 units

3 0

3 years ago

The proportion of left handed people in the population is about 0.10. Suppose a random sample of 300 people is observed. (a) Wha

pantera1 [17]

Answer: $(\hat{p})\sim N(0.10,\ 0.017)$

Step-by-step explanation:

Sampling distribution of the sample proportion $(\hat{p})$ :

$(\hat{p})\sim N(p,\ \sqrt{\dfrac{p(1-p)}{n}})$

The sampling distribution of the sample proportion $(\hat{p})$ has mean = $\mu_{\hat{p}}=p$ and standard deviation = $\sigma_{\hat{p}}=\sqrt{\dfrac{p(1-p)}{n}}$ .

Given : The proportion of left handed people in the population is about 0.10.

i.e. p=0.10

sample size : n= 300

Then , the sampling distribution of the sample proportion $(\hat{p})$ will be :-

$(\hat{p})\sim N(0.10,\ \sqrt{\dfrac{0.10(1-0.10)}{300}})$

$(\hat{p})\sim N(0.10,\ \sqrt{0.0003})$

$(\hat{p})\sim N(0.10,\ 0.017)$ (approx)

Hence, the sampling distribution of the sample proportion $(\hat{p})$ is $(\hat{p})\sim N(0.10,\ 0.017)$

8 0

3 years ago

A math class has 7 girls and 3 boys in the seventh grade and 3 girls and 9 boys in the eighth grade. The teacher randomly select

Bumek [7]

7th grade has 3 boy out of 10 students

probability of picking a boy is 3/10

8th grade has 9 boys out of 12 students are boys

probability of picking a boy is 9/12 reduced to 3/4

3/10 x 3/4 = 9/40 probability of picking 2 boys

4 0

3 years ago

What does x=<br> What does x=

tiny-mole [99]

Answer:

Step-by-step explanation:

the angles of a triangle all add up to 180

thus, we can combine every term given and set them equal to 180 and solve for x

$9x + 72 = 180 \\ 180 - 72 = 108 \\ 108 \div 9 = 12$

4 0

3 years ago