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azamat
3 years ago
8

Can u guys pls help me on this question and pls explain how u got the answer

Mathematics
1 answer:
frosja888 [35]3 years ago
4 0

Answer:

17.4

Step-by-step explanation:

side 1=4.5

side 2=4.5

side 3=4.5

base 1=3.9

17.4

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Which is an equation for the line contains (1,2) and has the slope of 4
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The slope is 4. That eliminates the first two answers

Y-y1=m(x-x1)
Y-2=4(x-1)
Y-2=4x-4
Add 2 to both sides
Y=4x-2
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(a) Increase the selling price of $42 by 10%​
damaskus [11]

Answer:

<h2>$46.2</h2>

Step-by-step explanation:

p\%=\dfrac{p}{100}\\\\10\%=\dfrac{10}{100}=\dfrac{1}{10}=0.1\\\\10\%\ of\ \$42\to0.1\cdot\$42=\$4.2\\\\\$42+\$4.2=\$46.20

Other method:

\text{Increase bo}\ 10\%\to100\%+10\%=110\%\\\\110\%=\dfrac{110}{100}=\dfrac{11}{10}=1\dfrac{1}{10}=1.1\\\\110\%\ of\ \$42\to1.1\cdot\$42=\$46.2

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Al has 324 square paving stones that he plans to use to conduct a square patio how many paving stones wide will the patio be
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3 years ago
Luke's Bakery recently spent a total of $69 on new equipment, and their average hourly operating costs are $15. Their average ho
WINSTONCH [101]

Answer:

It will take the bakery 2.875 hours to make back the amount invested.

The total expenses and receipts, both will = $112.125

Step-by-step explanation:

Given:

Cost of equipment = $69

Operation cost per hour = $15

Average hourly receipts = $39

To find how many hours will it take for the Bakery to make back the amount invested and what would the total expenses and receipts both equal

Solution:

Let the bakery take t hours to make back the amount invested.

Operation cost for t hours in dollars will be = 15t

Equipment cost = $69

Total expenses in dollars can be given as = 15t+69

Receipts for t hours in dollars will be = 39t

<em>Since the bakery makes up the amount invested in </em>t<em> hours, so the amount in expenses must be equal to the total receipts for </em>t<em> hours.</em>

Thus, we have:

39t=15t+69

Subtracting both sides by 15t

39t-15t=15t-15t+69

24t=69

Dividing both sides by 24.

\frac{24t}{24}=\frac{69}{24}

∴ t=2.875

So, in 2.875 hours the bakery will be able to make back all the investment.

Total expenses in 2.875 hours will be = 15(2.875)+69=43.125+69=\$112.125

Total receipts will be the same and can be given as = 39\times 2.875 = \$112.125

6 0
4 years ago
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