I need some help I rlly appreciate it!!!!

Simplify the expressions.1 a. –2 t + 5 t – 2 – t

masha68 [24]

Answer:

1 a.) 2t – 2

1 b.) –9z + 4

2 a.) –2v + 3

2 b.) –13k – 9

3 a.) 7w − 2

3 b.) 10s

4 a.) 5

4 b.) –3p + 11

5 a.) –29x + 9

b.) 15v – 60x – 2

a.) 25n + 2

b.) –15n

a.) –71x + 4

b.) –15b

Step-by-step explanation:

<em>NOTE: I am kind of confused about the way this question is formatted, so I tried to answer everything I could decipher.</em>

1 a.) –2t + 5t – 2 – t → 2t – 2

1 b.) –5z + 4 – 4z → –9z + 4

2 a.) 8v + 3 – 10v → –2v + 3

2 b.) –6 – 6k – 3 – 7k → –13k – 9

3 a.) –6 – 3w + 4 + 10w → 7w − 2

3 b.) 9s + s → 10s

4 a.) 6 + 8b – 1 – 8b → 5

4 b.) 1p + 6 + 5 – 4p → –3p + 11

5 a.) 4x – 3x + 9 – 6x 5 → –29x + 9

b.) 9v + 6v – 2 – 10x 6 → 15v – 60x – 2

a.) n + 2 – (–4)n 6 → 25n + 2

b.) 6n – 3n 7 → –15n

a.) –4x – 4x + 4 – 9x 7 → –71x + 4

b.) –9b + (–6)b → –15b

7 0

2 years ago

What is 9 kilometers per hour converted into feet per minute? about 45.7 feet per minute about 492 feet per minute about 29,520

zalisa [80]

About 492 feet per minute

9 • 54.68066 = 492.126

Rounding to the nearest whole number gets you 492

7 0

2 years ago

Read 2 more answers

A dog breeder would like to know how many Dalmatian puppies are typically born in a litter. He conducts some research and select

podryga [215]

Answer:

c. 6.2 ± 2.626(0.21)

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 101 - 1 = 100

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 100 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.99}{2} = 0.995$ . So we have T = 2.626

The confidence interval is:

$\overline{x} \pm M$

In which $\overline{x}$ is the sample mean while M is the margin of error.

The distribution of the number of puppies born per litter was skewed left with a mean of 6.2 puppies born per litter.

This means that $\overline{x} = 6.2$

The margin of error is:

$M = T\frac{s}{\sqrt{n}} = 2.626\frac{2.1}{\sqrt{101}} = 2.626(0.21)$

In which s is the standard deviation of the sample and n is the size of the sample.

Thus, the confidence interval is:

$\overline{x} \pm M = 6.2 \pm 2.626(0.21)$

And the correct answer is given by option c.

5 0

3 years ago

Which equation is equal up to one-hundredth of 36? Is it 0.3*0.12 or 0.36÷0.12 or 0.3*1.2

Mumz [18]

Its 360 beacuse u multiply all of those numbers

3 0

3 years ago

Read 2 more answers

If x=-4 and y=6, then xy-3=

Anna11 [10]

Answer:

-12

Step-by-step explanation:

We start with the equation: $xy-3x$

Substitute the variables: $(-4)(6)-3(-4)$

Solve using order of operations (start with multiplication): $(-24)-(-12)$

And then addition/subtration: $(-24)-(-12)=-12$

3 0

3 years ago