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2 years ago

Reposting because nobody will help me..

Mathematics

1 answer:

Llana [10]2 years ago

5 0

Answer:

Step-by-step explanation:

18 = 2 * 3 * 3 = 2 *3²

$18*3^{(n+2)} = 2*3^{2}*3^{n+2}\\\\$

$= 2*3^{2+n+2}\\\\= 2*3^{n+4}\\\\= 2(3)^{n+4}$

Hint:

$a^{m}*a^{n} = a^{m+n}$

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Factor 4a^2b^4-25x^6y^4

jeka57 [31]

4a²b⁴ - 25x⁶y⁴

(2ab²)² - (5x³y²)²

= (2ab² + 5x³y²)(<span>2ab² - 5x³y²) By difference of two squares</span>

4 0

2 years ago

a store buys CDs with $1 for each and sells them for 1.5 each how many CDs should they sell to earn $100

abruzzese [7]

67 CDS

100/1.5=^
Hope this helps!

6 0

3 years ago

Read 2 more answers

5÷5+6÷6÷6÷6÷6÷6÷6÷6÷6÷6×6×7+7+8+9+3+5*6*6

Reil [10]

Answer:

208.00015

Step-by-step explanation:

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4 0

2 years ago

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A study on the latest fad diet claimed that the amounts of weight lost by all people on this diet had a mean of 23.2 pounds and

erica [24]

Answer:

The standard deviation of the sampling distribution of sample means would be 0.8186.

Step-by-step explanation:

We are given that

Mean of population=23.2 pounds

Standard deviation of population=6.6 pounds

n=65

We have to find the standard deviation of the sampling distribution of sample means.

We know that standard deviation of the sampling distribution of sample means

= $\frac{\sigma}{\sqrt{n}}$

Using the formula

The standard deviation of the sampling distribution of sample means

= $\frac{6.6}{\sqrt{65}}$

$=0.8186$

Hence, the standard deviation of the sampling distribution of sample means would be 0.8186.

3 0

3 years ago

Grayson went to the grocery store and bought bottles of soda and bottles of juice. Each bottle of soda has 35 grams of sugar and

Illusion [34]

The number of bottles of soda purchased is 10 and the number of bottles of juice purchased is 4.

<u>Step-by-step explanation:</u>

Let us consider the soda bottles as x and juice bottles as y.

From the given data we can derive 2 equations,

35x+15y= 410. .....(1)

x=y+6. ....(2)

Substitute equation (2) in (1),

35(y+6)+15y=410.

35y+ 210+15y=410.

50y+210=410.

50y=410-210.

50y=200.

y=4.

Substitute y value in equation (2),

x=4+6.

x=10.

The number of bottles of soda purchased is 10 and the number of bottles of juice purchased is 4.

4 0

2 years ago