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vladimir2022 [97]
3 years ago
13

Help please :) I would appreciate it if you also provided a explanation it's okay if there is none :))

Mathematics
2 answers:
Oksi-84 [34.3K]3 years ago
8 0

Answer:

7x^2 + 7

Step-by-step explanation:

So you collect the "like-terms". 3x^2 is not the same as 7, however, 4x^2 has the same term as 3x^2, so you add those together and then join the 7 in the expression.

Hope that explanation makes sense

ludmilkaskok [199]3 years ago
8 0

Answer:

3x^{2} +  4 {x}^{2}  + 7 = 7 {x}^{4}  + 7

Step-by-step explanation:

<u>Because 3x² and 4x² are like terms, they can be added together:</u>

<u>3+4=7</u>

<u>²</u><u>+²=⁴</u>

<u>Therefore, it will be 7x⁴.</u>

<u>But 7x⁴ and 7 are not like terms. So it is just 7x⁴+7</u>

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Megan is making bracelets to sell to earn money for the local animal shelter. It takes her 1/4 hour to pick out all the beads an
nalin [4]
1/4 + 1/10 = 5/20 + 2/20 = 7/20 = 0.35

5.25/0.35 =  15

15 bracelets
7 0
3 years ago
3. If Earth was 10 times farther away from the sun than it is now, which planet would it be closest to? (Assume all the planets
Soloha48 [4]
The earth is 93 million miles away from the sun.  93 million times 10 is 930,000,000 away.  Mars is currently 141.6 million miles from the sun.  Assuming the planets were in a straight line you would subtract from 141.6 million miles the 93 million miles so that would put us within 48,600,000 miles of Mars.  So the answer is we would be closest to Mars. 
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Read 2 more answers
Consider the following information related to a set of quantitative sample data:
svlad2 [7]

Answer:

(a) There are outliers

(b) x and x >62

Step-by-step explanation:

Given

\sigma = 14.92

\bar x = 22.0

q_0 = -24

q_1 = 14.5

q_2 = 24.5

q_3 = 33.5

q_4 = 64

Solving (a): Check for outliers

This is calculated using:

Lower = Q_1 - (1.5 * IQR) --- lower bound of outlier

Upper = Q_3 +(1.5 * IQR) --- upper bound of outlier

Where

IQR = Q_3 - Q_1

So, we have:

IQR = 33.5 - 14.5

IQR = 19

The lower bound of outlier becomes

Lower = Q_1 - (1.5 * IQR)

Lower = 14.5 - (1.5 * 19)

Lower = 14.5 - 28.5

Lower = -14

The upper bound of outlier becomes

Upper = Q_3 +(1.5 * IQR)

Upper = 33.5 + 1.5 * 19

Upper = 33.5 + 28.5

Upper = 62

So, we have:

-14 \le x \le 62 --- the range without outlier

Given that:

q_0 = -24  --- This represents the lowest data

q_4 = 64   --- This represents the highest data

-24 and 64 are out of range of -14 \le x \le 62.

Hence, there are outliers

Solving (b): The outliers

The outliers are data less than the lower bound (i.e. less than -14) or greater than the upper bound (i.e. 62)

So, the outliers are:

x and x >62

4 0
3 years ago
The amount of profit, p, you earn by selling knives,k, can be determined by:p=200k-500. A) determine the constraints on profit a
Marizza181 [45]
The only restraints on profit result from the restriction on the domain which in turn place a restriction on profit.  

0≤k. Knives sold cannot be negative.

So the range of profit or p is:

p=[-500, +oo)

Profit increases as the number of knives sold increases.  $200 more profit is gained by each sale of a knife.

4000=200k-500

4500=200k

k=22.5

Since k is for knives sold, it must be an integer value, so a $4000 profit is not possible.  At 22, p=3900 and at 23, p=4100


3 0
3 years ago
Can someone help me pls with these?!
geniusboy [140]

Answer:

Justin survey - mean

Pair of numbers - 14 and 15

Range of salaries - can't read, but the lowest number has to be the answer.

Fourth number is 64

Babysitting mean is $15

data group has 1 mode

mean of 6 and mode of 5 is a)5,12,1,5,7

Find range is 25

Step-by-step explanation:

3 0
3 years ago
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