3 years ago

Solve for x: -12+x=-5 A) 7 B) -7 C) 17 D) -17

1 answer:

5 0

The answer is A since -12 is added on both sides. And when adding with negatives you ALWAYS take the sign of the bigger number :)

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4(w+1)=−6 <br><br> w = ?<br> HURRY FAST!

vodomira [7]

Answer:

4w+4=-6

4w=-6-4

4w=-10

4w/4=-10/4

w=-2.5

7 0

3 years ago

A local bakery has a daily operating cost of $1800 plus a cost of $10 per cake

Delicious77 [7]

Answer:

B. 15c > 1,800 + 10c

Step-by-step explanation:

Profit=Total revenue - total cost

Profit is achieved:

when total revenue is greater than total cost

TR>TC

When total cost is less than total revenue

TC<TR

From the question

Total cost=1800+10c

Total revenue=15c

Profit=TR>TC or TC<TR

15c>1800+10c

1800+10c<15c

Option B. 15c > 1,800 + 10c satisfies the condition that Profit=TR>TC

4 0

3 years ago

Read 2 more answers

Consider the set of differences, denoted with d, between two dependent sets: 84, 85, 83, 63, 61, 100, 98. Find the sample standa

sveta [45]

Answer:

The sample standard deviation is 15.3.

Step-by-step explanation:

Given data items,

84, 85, 83, 63, 61, 100, 98,

Number of data items, N = 7,

Let x represents the data item,

Mean of the data points,

$\bar{x}=\frac{84+85+83+63+61+100+98}{7}$

$=82$

Hence, sample standard deviation would be,

$\sigma= \sqrt{\frac{1}{N-1}\sum_{i=1}^{N} (x_i-\bar{x})^2}$

$=\sqrt{\frac{1}{6}\sum_{i=1}^{7} (x_i-82)^2}$

$=\sqrt{\frac{1}{6}\times 1396}$

$=\sqrt{232.666666667}$

$=15.2534149182$

$\approx 15.3$

4 0

3 years ago

The mean score on biology quiz was 62 with a standard deviation of 8, Jose’s score was a 74% what was his z score?

melisa1 [442]

(74-62)/8=3/2=1.5
Thank you hope this helps

7 0

3 years ago

Factor by grouping 2u^3+3u^2-14u-21

mariarad [96]

$\bf 2u^3+3u^2-14u-21\implies (2u^3+3u^2)-(14u+21)
\\\\\\
u^2(2u+3)-7(2u+3)\implies \stackrel{\stackrel{common}{factor}}{(2u+3)}(u^2-7)$

6 0

3 years ago

Read 2 more answers