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3 years ago

HELP PLEASE i give brainlist

Mathematics

1 answer:

brilliants [131]3 years ago

5 0

The simplest form of the ratio is 1:4.

I hope this helps you.

Brainliest answer is always appreciated. <span />

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I have to find the mean and range of this data set and show work.

mart [117]

Answer:

61 is the mean and the range is 19

Step-by-step explanation:

trust

7 0

3 years ago

Susie divided a 9-pound bag of apples into 5 equal piles. How many pounds of apples are in each pile? A. 1/5 Lb. B. 5/9 C. 1 4/5

amid [387]

D.5/4
<span>pounds of apples are in each pile</span>

3 0

3 years ago

Problem PageQuestion Calcium levels in people are normally distributed with a mean of mg/dL and a standard deviation of mg/dL. I

SIZIF [17.4K]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The calcium level that is the borderline between low calcium levels and those not considered low is $c = 8.68$

Step-by-step explanation:

From the question we are told that

The mean is $\mu = 9.5\ mg/dL$

The standard deviation $\sigma = 0.5 \ mg/dL$

The proportion of the population with low calcium level is $p =$ 5% = 0.05

Let X be a X random calcium level

Now the P(X < c) = 0.05

Here P denotes probability

c is population with calcium level at the borderline

Since the calcium level is normally distributed the z-value is evaluated as

$P(Z < \frac{c - \mu}{\sigma } ) = 0.05$

The critical value for 0.05 from the standard normal distribution table is

$t_{0.05} = -1.645$

=> $\frac{c - \mu}{\sigma } = -1.645$

substituting values

$\frac{c - 9.5}{0.5 } = -1.645$

=> $c - 9.5 = -0.8225$

=> $c = 8.68$

6 0

4 years ago

A student solved this problem by making a table. Andy has $150. Marta has $120. In how many years will they both have the same a

SpyIntel [72]

Assuming that I am properly understand your question, all you have to do is get the initial values for each individual and add their savings monthly.

Starting
Josie: 80
Addie: 60

One month
Josie: 110
Addie: 100

Two months
Josie: 140
Addie: 140

So two months would be the answer.

You could also do...
x = months

80 + 30x = 60 + 40x
20 + 30x = 40x
20 = 10x (Divide by ten on both sides)
2 = x

2 Months

3 0

3 years ago

A 16 -oz iced tea at a certain restaurant has 80 calories. How many calories are there in a 24-oz iced tea?

kozerog [31]

Answer: 120-oz

80/16=5

5x24=120

3 0

3 years ago

Read 2 more answers