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4 years ago

Algebra help what’s the answer??

Mathematics

1 answer:

marishachu [46]4 years ago

6 0

I think it’s the last one or d

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Simplify each expression [18-(-1-7)^2]+16÷2^4

vivado [14]

Answer: -15/8

Step-by-step explanation:

Using PEMDAS:

[18-(-8)^2] + 16 / 2^4

(18-64)+16 / 16

-46+16 / 16

-30/16

(Simplified) -15/8

3 0

3 years ago

Suppose 300 nursing students took a certification test that is worth 100 points.

Alja [10]

Answer:

225 students scored 65 or better and 75 students scored 88 or better.

Step-by-step explanation:

We are given that The five-number summary for the scores of 300 nursing students are given :

Minimum = 40

$Q_1 = 65$

Median = 82

$Q_3 = 88$

Maximum = 100

$Q_1$ is the first quartile and is the median of the lower half of the data set. 25% of the numbers in the data set lie below $Q_1$ and about 75% lie above $Q_1$ .

$Q_3$ is the third quartile and is the median of the upper half of the data set. 75% of the numbers in the data set lie below $Q_3$ and about 25% lie above $Q_3$

i) .About how many students scored 65 or better?

$Q_1 = 65$

Since we know that 75% lie above $Q_1$ .

So, Number of students scored 65 or better = $75\% \times 300 = \frac{75}{100} \times 300 =225$

ii)About how many students scored 88 or better?

$Q_3 = 88$

Since we know that 25% lie above $Q_3$

So, Number of students scored 88 or better = $25\% \times 300 = \frac{25}{100} \times 300 =75$

Hence 225 students scored 65 or better and 75 students scored 88 or better.

7 0

4 years ago

I need help with thus assignment ASAP

Crazy boy [7]

Your answer should be 10.5

7 0

3 years ago

Read 2 more answers

A line on a graph shows a proportional relationship between the amount of almonds, x, in grams and the total calories y. Two poi

Klio2033 [76]

287.5 / 50 = 5.75 calories per gram

3 0

3 years ago

You invested $27,200 and started a business selling vases. Supplies cost $11 per

AleksAgata [21]

1,600 vases must be produced and sold to break even.

x($28-$11)=$27,200
Simplify to 17x=27,200
Divide 17x by 17 so it cancels out.
What you do to one side of the equation you have to do to the other.
27,200/17=1,600
x=1,600

6 0

3 years ago