3 years ago

Right answer gets Brainlist

Mathematics

1 answer:

ad-work [718]3 years ago

3 0

Answer:

3,-3,5,-3, the second and fourth are the same

Step-by-step explanation:

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By selling old CDs, Sarah has a store credit for $153. A new CD costs $18. What are the possible numbers of new CDs Sarah can bu

Viktor [21]

To calculate this we simply need to devide 153 by 18.
153/18=8.5
which means that Sarah can buy 8 new CDs and will have
153 - 8*18=9 dollars spare.
Sarah has extra cash because with that spare money she can't buy whole new CD.

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4 years ago

The mean cost of a 5 pound bag of shrimp is $50 with the standard deviation of six dollars. If a sample of 40 bags of shrimp is

Lemur [1.5K]

SOLUTION

We will use the formula

$\begin{gathered} Z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}} \\ where\text{ } \\ x=51.3,\mu=50,\sigma=6,n=40 \end{gathered}$

Applying we have

$\begin{gathered} Z=\frac{51.3-50}{\frac{6}{\sqrt{40}}} \\ Z=\frac{1.3}{\frac{6}{\sqrt{40}}} \\ Z=1.37032 \end{gathered}$

Now using a Zscore calculator for 1.370320, we have

P(xHence the answer is 0.9147

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1 year ago

Simplify the expression if possible by combining like terms 9(X+5)+7(X-3)

IceJOKER [234]

So you do
distribute
a(b+c)=ab+ac
9(x+5)=9x+9 times 5=9x+45

7(x-3)=7x+7 times -3=7x-21

so now we have
9x+45+7x-21
group like terms
9x+7x+45-21
add
16x+24

simplified is 16x+24

7 0

4 years ago

What is -100x and what is x

Zielflug [23.3K]

Answer:

-100x=-100

x=1

Step-by-step explanation:

(simplifying the equation)

-100x-100=0

-100x=-100 they subtracted -100 from both sides

x=1 then divided by -100

:) ur welcome

4 0

3 years ago

Read 2 more answers

Write the vector in component form.

Alex_Xolod [135]

Answer:

8i+3j

Step-by-step explanation:

let point P2(0,3)

point P1(-8,0)

vector P1P2= Position vector of P2- position vector of P1

vector= (0,3)-(-8,0)

vector= (8,3)

vector=8i+3j

7 0

3 years ago