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2 years ago

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Mathematics

1 answer:

GuDViN [60]2 years ago

5 0

Answer:

Step-by-step explanation:

a is (5,1)

b is (-5,-1)

c is (5,-1)

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It should take 5.22 min to clean a shower . You have 5 showers that need to be cleaned . How many min should it take for you to

kirill115 [55]

It would take you 26.1 minutes to clean all the showers. If it takes 5.22 minutes to clean the one and you have five to clean just multiply the time by five. Good luck!

4 0

3 years ago

Which is the measure of line segment AB?<br> A)10 feet<br> B)15 feet<br> C)20 feet<br> D)100 feet

zavuch27 [327]

Find the last angle:
180-(30+90)
180-(120)
60

Evaluate using sine rule:
$\frac{c}{sinC}$ = $\frac{b}{sinB}$

c= $\frac{bsinC}{sinB}$

= $\frac{10sin90°}{sin30°}$

=20

The length of line segment AB is 20 feet (answer choice C)

5 0

3 years ago

Read 2 more answers

Andy is buying a car.

serg [7]

7/100* 6500=455

6500-455=6045

6045/12=503.75

Andy pays 503.75 a month

8 0

4 years ago

What is the value of x?

Nikolay [14]

Answer:

5 units (you are right!)

Step-by-step explanation:

The triangles ABD and BCD are similar.

Therefore,

$\frac{x}{10}=\frac{10}{4x} \\4x^{2}=100\\x^{2}=25\\x=5$

I hope this helped!

6 0

3 years ago

A metallurgist has one alloy containing 26% copper and another one containing 63% copper. How many pounds of alloy must he use t

ArbitrLikvidat [17]

From the calculations below, 56.43 pounds of 0.26 copper, and 1.57 pounds of 0.63 copper are used.

<h3>How do we calculate the amount of copper used?</h3>

Let A represents pounds of 0.26 copper and B represents pounds of 0.63 copper are used to make 58 pounds of 0.27 copper.

Therefore, we can use simultaneous equations as follows:

A + B = 58

A = 58 – B ………………………………….. (1)

Also, we have:

0.26A + 0.63B = 0.27 * 58

0.26A + 0.63B = 15.66 ……………………….. (2)

Substituting for A from equation (1) into (2) solve for B, we have:

0.26(58 – B) + 0.63B = 15.66

15.08 – 0.26B + 0.63B = 15.66

0.37B = 15.66 – 15.08

0.37B = 0.58

B = 0.58 / 0.37

B = 1.57 pounds

Substituting for B in equation (1), we have:

A = 58 – 1.57

A = 56.43 pounds

Learn more about simultaneous equations here: brainly.com/question/16763389.

#SPJ1

7 0

2 years ago