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Bad White [126]
3 years ago
5

We use the normal distribution to make estimates about population true or false

Mathematics
1 answer:
Ugo [173]3 years ago
6 0

Answer:

true

Step-by-step explanation:

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A chemist needs to mix a 40% hydrochloric acid with a 70% hydrochloric acid to create a 20 oz mixture that is 55% hydrochloric a
nikdorinn [45]

Answer:

y=10

Step-by-step explanation:

5 0
3 years ago
Larry won an award because he wrote 40 popular songs. However, he also wrote 32 songs that weren't popular. How many songs did L
Vsevolod [243]
Add 40 plus 32, it equals 72 because he wrote 40 popular songs and 32 songs.
8 0
3 years ago
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Your job pays $8 per hour. (a) Write an algebraic expression for your pay in dollars for working h hours. (b) What is your pay i
Korvikt [17]
P = 8h.....where P stands for pay

if u work 36 hrs...
P = 8(36)
P = 288 <==
4 0
3 years ago
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Solve the following equation algebraically:
Gre4nikov [31]

Answer:

\boxed{\sf \ \ \ answer \ b. \ \ +5 \ \ \ }

Step-by-step explanation:

Hello

let's assume that we are looking for x >=0

4x^2=100  \dfrac{4x^2}{4}=x^2=\dfrac{100}{4}=25\\\sqrt{x^2}=25\\ |x| = 5  x = 5 \ or \ x=-5

Let's assume that we are looking for x>=0

so the correct answer is 5

8 0
3 years ago
45% of a number is 180. Find the number
KonstantinChe [14]

Answer:

81

Step-by-step explanation:

The term "of" can be translated to multiplication in problems like this.

So it's essentially saying multiply 45% to 180 and give me the result.

45% can be written as 45/100 in fractions (45 percent, where cent means 100 and per means division). 45/100 can be written as 0.45 in decimal form.

Now the problem reads 0.45 X 180. Using a calculator, we can solve this and the result comes out to be 81

4 0
3 years ago
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