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3 years ago

Please take a look and help if you can!

Mathematics

1 answer:

alukav5142 [94]3 years ago

8 0

Answer:

see explanation

Step-by-step explanation:

The area of a rectangle = length × width

To find the width, divide the area by the length

width = $\frac{area}{length}$ = $\frac{3x^2+9x}{3x}$

To simplify divide each term on the numerator by 3x

= $\frac{3x^2}{3x}$ + $\frac{9x}{3x}$ = x + 3 ← width

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Pls help quick! I am not sure if i did this right

bogdanovich [222]

Answer: The last option, <u>28</u> minutes

Step-by-step explanation:

See attached for my work. <em>If you are color blind let me know, I color-coded where I "pulled" numbers from.</em>

To answer this problem, we can look at the graph. We need to see for how long the black line is above the blue.

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2 years ago

Read 2 more answers

The number of orders received daily by an online vendor of used CDs is normally distributed with mean 270 and standard deviation

frez [133]

Answer:

Step-by-step explanation:

Given that the number of orders received daily by an online vendor of used CDs (say X) is normally distributed with mean 270 and standard deviation 16.

X is N(270, 16)

To find percentage of days will the company have to hire extra help or pay overtime, we can find probability using std normal table

X>302 means

$Z>\frac{302-270}{16} =2$

P(Z>2) = 0.25

Thus 25% of days will the company have to hire extra help or pay overtime

4 0

3 years ago

A coin is tossed and an eight-sided die numbered 1 through 8 is rolled. Find the probability of tossing a head and then rolling

ratelena [41]

Answer: 7/8

Step-by-step explanation:

Probability is calculated by number of possible outcomes/ total outcomes

From the question, a coin only has two sides, Head or Tail. Total outcomes is therefore equal to 2

Possible outcome is to toss a head, which is one event

Probability of tossing a head is therefore =1/2

The second part of the question is rolling a die with eight sides.

Here, the die is said to have eight sides, 1,2,3,4,5,6,7,8. Total outcomes is therefore equal to 8

Possible outcome of rolling a number greater than 5 is 3 possibilities, that is rolling 6, 7 and 8.

Pr(rolling > 5) is 3/8

Therefore, Pr ( head; rolling > than 5)

= 1/2 + 3/8

=7/8

I hope this is clear, please mark as brainliest answer

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3 years ago

What is -7 2/3 + (-5 1/2) + 8 3/4

Veseljchak [2.6K]

Hey there :)

$-7 \frac{2}{3} = - \frac{23}{3}$
$-5 \frac{1}{2} = -\frac{11}{2}$
$8 \frac{3}{4} = \frac{35}{4}$

$- \frac{23}{3} - \frac{11}{2} + \frac{35}{4}$

We need to change all fractions to have a common denominator

Lets see:
Multiples of 2: 2 , 4 , 6 , 8 , 10 , 12
Multiplies of 3: 3 , 6 , 9 , 12
Multiplies of 4: 4 , 8, 12

The common denominator is 12
2 x 6 = 12
3 x 4 = 12
4 x 3 = 12

= $-\frac{23(4)}{3(4)} - \frac{11(6)}{2(6)} + \frac{35(3)}{4(3)}$
= $- \frac{92}{12} - \frac{66}{12} + \frac{105}{12}$

We need to add the numerators while keeping the same denominator
= $- \frac{53}{12}$
= $-4 \frac{5}{12}$

7 0

3 years ago

Point g is located at (3,6) on the coordinate plane. Point G is reflected over the x-axis to create point G'. Point G' is then r

dmitriy555 [2]

-Answer:

(-3. -6)

Step-by-step explanation:

G (3,6)

x axis reflect

G' (3, -6)

y axis reflect

G'' (-3. -6)

6 0

2 years ago