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3 years ago

15 points I think i need help

Mathematics

1 answer:

Aleksandr-060686 [28]3 years ago

7 0

Answer:

There are 104.5 centiliters of paint in the mixture.

Step-by-step explanation:

Since you have a total of .50 liters of paint you would just look at the measurement and split it in half which would give you 100 centiliters and then you would add the 4.5 centiliters to the 100 and you would get 104.5 centiliters of paint.

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All of the following are ways to write 25 percent of N EXCEPT

malfutka [58]

The answer is a
hope this help

8 0

3 years ago

Data for the estimated number of HIV cases worldwide between 1988 and 1996 suggests exponential growth in the number of cases ov

Eduardwww [97]

Answer:

d. 52.5 million cases

Step-by-step explanation:

from the data output in the question, we have the regression equation to be

log y = -151.281 + 0.076577x

y is the number of hiv cases which is in millions

x is the year of the hiv case

x = 1998

we put the value of x in the regression equation

log y = -151.281 + 0.076577(1998)

log y = -151.281 + 153.000846

log y = 1.719846

since the result is in log form,

$y=10^{1.791846}$

y = 52.5 million cases

3 0

3 years ago

The annual salaries of all employees at a financial company are normally distributed with a mean of $34,000 and a standard devia

lora16 [44]

z-score of a company is 5.

What is z- test?

A z-test is a statistical test used to determine whether two population means are different when the variances are known and the sample size is large.

The annual salaries of all employees at a financial company are normally distributed with a mean of $34,000 and a standard deviation of $4,000.

Now, using z- score

z= (x- $\mu$ )/ $\sigma$

z= 54000- 34000/ 4000

z= 20000/4000

z=5.

Hence, z-score of a company is 5.

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8 0

2 years ago

Help with math work

Dennis_Churaev [7]

Answers for different section are given below;

<h3>What is Function?</h3>

The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.

Here, given function;

f(x) = -x² - 4x + 6

1. If we take -1 common from the given function, we get

f(x) = -1 (x² + 4x - 6)

f(x) = -1 (x² + 4x) + 6

Thus, first block contains -1 and second block contains 4.

2. Then we add half of the coefficient of x², (b/2)², inside the bracket and subtract it outside a times, a(b/2)².

f(x) = -1 ( x² + 2. 2x + 2²) +2² + 6

f(x) = -1 ( x² + 4x + 2²) +4 + 6

Thus, first block contains -1, second block contains 4, third block contains 4, and fourth block contains 4.

3. Then we factorize the bracket and simplify outside the bracket;

f(x) = -1 (x + 2)² + 10

Thus, first block contains -1, second block contains 2 and third block contains 10.

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5 0

2 years ago

HELP!!!!!!!!!!!!!!!!¡!!!!

Gala2k [10]

Answer:3rd choice

Step-by-step explanation:

eliminate choices with a=2+b and o=3+b because those say two more apples than bananas, and 3 more oranges than bananas.

eliminate choice with b=2a because that says twice as many bananas as apples.

3 0

3 years ago