3 years ago

Find the product. y ^4 · y ^3

Mathematics

1 answer:

Flura [38]3 years ago

7 0

Its y^7
Hope it helps

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Two trains, Train A and Train B, weigh a total of 407 tons. Train A is heavier than Train B. The difference of their weight is 2

alexira [117]

Answer:

A = 328 tons, B = 79 tons.

Step-by-step explanation:

A + B = 407

A - B = 249

Cancel b out of the equation, then add the rest.

2A = 656, A=328 tons

A + B = 407, B = 407-328

B = 79 tons

5 0

4 years ago

Ben has three times as many guppies as fish if he has a total of 20 fish how many Guppies does he have

GalinKa [24]

20x3 would 60
Just mutiply the number fishes with 3

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4 years ago

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In a random sample of 60 dog owners enrolled in obedience training, it was determined that the mean amount of money spent per ow

Anton [14]

Answer: $(\$106.29,\ \$112.37)$

Step-by-step explanation:

Given : Sample size : $n=60$

The mean amount of money spent per owner = $\$109.33\text{ per class}$

Standard deviation : $\sigma=\$12$

Significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

We know that the confidence interval for population mean is given by :-

$\mu\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

$109.33\pm(1.96)\dfrac{12}{\sqrt{60}}\\\\\approx109.33\ \pm\ 3.04\\\\\approx(109.33-3.04,\ 109.33+3.04)\\\\(106.29,\ 112.37)$

Hence, the 95% confidence interval for the mean amount spent per owner for an obedience class will be $(\$106.29,\ \$112.37)$

6 0

3 years ago

2(5m-8)+3(m+2)=12+4(2m-1)

FrozenT [24]

Answer:

3.6

Step-by-step explanation:

2(5m-8)+3(m+2)=12+4(2m-1)

10m - 16 + 3m + 6 = 12 + 8m -4

13m - 10 = 8 + 8m

13m = 18 + 8m

5m = 18

m = 3.6

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3 years ago

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Greg has $250 to spend. He wants to buy a new gaming system that is usually $380 but he knows it is on sale. If there is an 8% s

Vadim26 [7]

The correct answer is 38%

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3 years ago