3 years ago

What is the answere answer because I want to know if I got it right

Mathematics

1 answer:

sattari [20]3 years ago

4 0

Okay please take another picture of it and repost it.

You might be interested in

Based on the model ân(11551155â,8989â) describing steerâ weights, what are the cutoff values for âa) the highestâ 10% of theâ we

cestrela7 [59]

I cant understand this

8 0

3 years ago

The ratio of cassette to compact disc is 10 to 3 and the number of cassettes is 10 less than 5 times the number of compact discs

OlgaM077 [116]

There are 20 cassettes.

Step-by-step explanation:

Given,

Ratio of cassette to compact disc = 10:3

Let,

the number of cassettes = 10x

Number of compact disc = 3x

According to given statement;

the number of cassettes is 10 less than 5 times the number of compact discs.

10x = 5(Number of CD) - 10

$10x=3(5x)-10 \\10x=15x-10\\10=15x-10x\\10=5x\\5x=10$

Dividing both sides by 5

$\frac{5x}{5}=\frac{10}{5}\\x=2$

Number of cassettes= 10x = 10(2) = 20

There are 20 cassettes.

Keywords: variable, ratio

Learn more about variables at:

#LearnwithBrainly

5 0

3 years ago

Assume that the mean length of a human pregnancy is 268 days with a standard deviation of 9 days. What percentage of human pregn

Ann [662]

Μ = 268 days, the population mean
σ = 9 days, the population standard deviation

For the random variable x = 272 days, the z-score is
z = (x-μ)/σ
= (272 - 268)/9
= 0.4444

From z-tables, obtain
P(z <= 0.6716) = 0.6716 = 67.2%

Answer: 67.2%

3 0

3 years ago

a box contains 4 red balls and 6 purple balls. Ezra takes out a ball, puts it back and then takes out another ball. what is the

ss7ja [257]

Answer:

16/100 = 4/25

Step-by-step explanation:

4/10 * 4/10 = 16/100

8 0

2 years ago

F(x) = 4x + 1 for x = 3

lina2011 [118]

F(x) = 4x + 1 ; x = 3

= 4(3) + 1

= 12 + 1

= 13

So the answer will be F(x) = 13.

7 0

3 years ago