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3 years ago

What are the like terms?? 4t4-9t3-7t4+10t3 PLEASE HELP!!!

Mathematics

1 answer:

lys-0071 [83]3 years ago

5 0

Answer:

-3t4+t3

Step-by-step explanation:

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1) y=-3x + 4 y = 3x - 2 (1,1)

puteri [66]

Answer:

y=3x-2

Step-by-step explanation:

your question didn't have any instructions so this might not be what you're looking for

set them equal to each other

-3x+4=3x-2

-3x-3x=-2-4

-6x=-6

x=1

plug in x=1

y=3(1)+4 =7

y=3(1)-2 =1

so, when x=1, y=1 in the expression y=3x-2

7 0

3 years ago

What are the values of m and 0 in the diagram below?

Sliva [168]

Answer:

<h3>The correct answer is</h3>

hope it helps

3 0

3 years ago

The population standard deviation for the heights of dogs, in inches, in a city is 3.7 inches. If we want to be 95% confident th

Aleks04 [339]

Answer:

The minimum sample size that can be taken is of 14 dogs.

Step-by-step explanation:

The formula for calculating the minimum sample size to estimate a population mean is given by:

$n=\frac{z^{2}\sigma^{2}}{e^{2}}$

The <u>first step</u> is obtaining the values we're going to use to replace in the formula.

Since we want to be 95% confident, $1-\alpha=0.95 \Rightarrow \alpha=0.05$ .

Therefore we look for the critical value $z_{\alpha/2}=1.96$ .

Then we calculate the variance:

$\sigma = 3.7 \Rightarrow \sigma^{2}=13.69$

And we have that:

$e=2 \Rightarrow e^{2}=4$

<u>Now</u> we replace in the formula with the values we've just obtained:

$n=\frac{1.96^{2}*13.69}{4}=13.1479\approx 14$

Therefore the minimum sample size that can be taken to guarantee that the sample mean is within 2 inches of the population mean is of 14 dogs.

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3 years ago

jamal works in a city and sometimes takes a taxi to work. the taxicab charge $1.50 for the first 1/5 miles and $0.25 for each ad

Llana [10]

One and one-fifth mile

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3 years ago

You served food to a group at a restaurant. The total cost of the food was $42.00. The sales tax is 8% of the cost of food. The

Inessa05 [86]

Answer:3 and 9 over 25

Step-by-step explanation:

5 0

3 years ago

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