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Alenkasestr [34]

3 years ago

15

True or false: When moving to a bigger unit we divide or move our decimal to the left.

1 answer:

Lerok [7]3 years ago

5 0

False because, If you have to move the decimal point to the right to get the original number, the exponent will be a positive number, if you have to move the decimal point to the left to get the original number, the exponent will be a negative number.

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Please help!!!!!!!!!!!!!!!!!!!!!!! I'm NOT about to write all that out again. THANK YOU!!!!

NikAS [45]

Answer:

I am not able to see yo pics. sorry

Step-by-step explanation:

4 0

3 years ago

_______________________<br> can someone help me solve this question? Thank you.

Zinaida [17]

Answer:

-60

Step-by-step explanation:

Factor the problem out using FOIL.

The end result is: −60 $x^{2}$ −84x+9

The value of coefficent a (the number in front of the x^2) is -60.

8 0

3 years ago

A sample of n = 9 college students is used to evaluate the effectiveness of a new Study Skills Workshop. Each student’s grade

forsale [732]

Answer:

B) μD = 0.60 ± 0.10(1.397)

Step-by-step explanation:

The confidence interval is given by:

$MD±t_{\alpha/2, n-1} \frac{s}{\sqrt{n} }$

Where

MD=60

n=9

df=n-1=8

$t_{\alpha/2, n-1}=1.397$

$s=\sqrt{0.09} =0.3$

Then the confidence interval is

μD=0.60±1.397*(0.3/√9)

μD=0.60±0.10*(1.397)

6 0

3 years ago

When n = 3, which of the expressions below will be greater than 50? Select all that apply. A) (8n2÷9)⋅7 B) 2n2⋅3 –4n C) 4n2–6n+1

True [87]

Answer:

<u><em>A</em></u>

Step-by-step explanation:

<u>a)</u>

<u></u> $(8(3)^{2} / 9) * 7$ <u></u>

<u>8(9) / 9 = 8 x 7 = 56</u>

b)

$2(3)^{2} * 3 - 4(3)$

2(9) * 3 - 12

18 * 3 = 54 - 12 = 42

c)

$4(3)^{2} - 6(3) + 12$

4(9) - 18 + 12

36 - 18 = 18 + 12 = 30

d)

$7(3) + (3 * 8)$

21 + 24 = 45

5 0

3 years ago

Simplify -x(4x^2 − 6x + 1)

12345 [234]

Answer:

$-4x^3+6x^2-x$

Step-by-step explanation:

1. Distribute the X across the equation: $-x(4x^2)=-4x^3\\$

2. $-x(-6x)=6x^2$

3. $-x(1)=-x$

3. $-4x^3+6x^2-x$

3 0

2 years ago