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2 years ago

PLEASE HELP!! ONLY RIGHT ANSWERS PLEASE!!!

Mathematics

1 answer:

weeeeeb [17]2 years ago

6 0

Answer:

Step-by-step explanation:

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Use the following sequence to:

Leona [35]

Step-by-step explanation:

A) d = a2-a1 = 5-9 = - 4

_________________

4 0

3 years ago

Combine like terms. What is a simpler form of the expression

pickupchik [31]

First, distrbute -3 to both -4y and 3

-3(-4y) = 12y -> note that two negatives multiplied = one positive answer

-3(3) = -9 -> note that one negative and one positive = one negative answer

12y - 9 + 7y -> combine like terms

12y + 7y - 9

19y - 9 -> answer

Your answer is 19y - 9

hope this helps

~Crystal

3 0

3 years ago

What is the first step to simplify the expression 64^42-[2(4-6)2]?

Marat540 [252]

Simplify what's in brackets first, then move to what's in the parenthesis

3 0

2 years ago

What is the slope of the line whose equation is -48 = 2x - 8y?<br> Enter your answer in the box.

aleksandr82 [10.1K]

Answer:

The slope is $\frac{2}{8}$

Step-by-step explanation:

Take the general equation of a straight line $y = mx+c$

Here $m$ is the slope of the line.

So let's get the equation of the line in the question in the same form.

$-48 = 2x-8y$

Add $8y$ to both sides: $8y - 48 = 2x$

Add $48$ to both sides: $8y = 2x + 48$

Divide by $8$ to get it into the general equation: $y = \frac{2}{8} x + 6$

Now compare it to the general equation to find the value of $m$ . The value of $m$ is the coefficient of $x$ which we can see is $\frac{2}{8}$

3 0

2 years ago

Based on past experience, a telemarketing firm has found that calls to prospective customers take an average of 2.0 minutes, wit

xenn [34]

Answer: Our required probability would be 0.9641.

Step-by-step explanation:

Since we have given that

Number of hours he works a day = 8

So, Number of minutes he worked in a day = $8\times 60=480\ minutes$

Number of calls = 220

So, Average $=\bar{x}=\dfrac{480}{220}=2.18\ minutes$

Standard deviation $=s=\dfrac{\sigma}{\sqrt{n}}=\dfrac{1.5}{\sqrt{220}}=0.10$

Mean = μ = 2.0 minutes

Standard deviation = σ = 1.5 minutes

Using the normal distribution, we get that

$z=\dfrac{\bar{x}-\mu}{s}\\\\z=\dfrac{2.18-2.0}{0.10}\\\\z=1.8$

So, the probability that Albert will meet or exceed his quota would be

$P(X\leq 2.18)=P(z\leq 1.8)=0.9641$

Hence, our required probability would be 0.9641.

6 0

3 years ago