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3 years ago

Simplify 90/105. show work.

1 answer:

6 0

90/105... divide the top and bottom by 5 so you get 18/21 then divide by 3 so you get 6/7 or just divide by 15 at the beginning and get 6/7. The answer is 6/7

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A research study was performed to determine if more than 30% of first-grade students at one school have entered Piaget’s concret

suter [353]

Answer:

Type I error

Step-by-step explanation:

A type I error occurs if the null hypothesis is rejected when it is actually true.

Type I Type II

Reject null when true Fail to reject null when not true

Null hypothesis: ∪ = 30%

Alternative hypothesis: ∪ > 30%

The researchers concluded that more than 30% of first-grade students at this school have entered the concrete operational stage of development and they rejected the null hypothesis.

However, a census actually found that in the population of all first graders at this school, only 28% have entered the concrete operational stage.

A type I error has been made because in actuality the null hypothesis was true but was rejected.

7 0

3 years ago

Find the measurements of the other seven angles

Nesterboy [21]

1 = 32
2 = 148
3 = 32
4 = 148
5 = 32
6 = 148
7 = 32
8 = 148

4 0

3 years ago

Pleaseeeeeeee help me

nika2105 [10]

I think the answer is C good luck

7 0

3 years ago

Read 2 more answers

Did the Mier y Teran Report or the Fredonian Rebellion declare Texas settlers free from Mexican rule?

Vsevolod [243]

That's no math so you don't need an answer

3 0

3 years ago

NO LINKS!! Jacob just won $32000 on the new game show, "The Wall,". He invested his winnings at an interest rate of 4.5%, compou

mixer [17]

Answers:

a) See the table below

b) The equation is $y = 32000(1.01125)^x$

c) $40,024.02

d) See the graph below

=========================================================

Explanations:

Start with part (b) where I detail how to get the equation.

Once the equation is found, plug in x = 0 to get

$y = 32000(1.01125)^x\\\\y = 32000(1.01125)^0\\\\y = 32000\\\\$

Repeat for x = 1

$y = 32000(1.01125)^x\\\\y = 32000(1.01125)^1\\\\y = 32360\\\\$

Repeat for x = 2, x = 3, x = 4 and x = 20 to get the table shown below.

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The template for any exponential equation is $y = a(b)^x$

a = starting amount = 32000

b = growth factor

The annual interest rate is 4.5%

We compound quarterly, so the quarterly rate is (4.5%)/4 = 1.125% which converts to the decimal form 0.01125; adding one to this leads to the growth factor of b = 1.01125

We go from $y = a(b)^x$ to $y = 32000(1.01125)^x$

-----------------------

Plug in x = 20 to represent 20 quarters have elapsed (aka 20/4 = 5 years)

$y = 32000(1.01125)^x\\\\y = 32000(1.01125)^{20}\\\\y \approx 32000(1.25075052084381)\\\\y \approx 40024.016667002\\\\y \approx 40024.02\\\\$

The investment would be worth $40,024.02 after five years, aka twenty quarters.

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See below for the graph. I'm using GeoGebra to make the graph. Another option is Desmos. It's preferable to use technology than to graph by hand. If you wanted to graph by hand, then you'd plot each of the points found in the table. Then draw a curve through all those points.

8 0

2 years ago