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Mariulka [41]
2 years ago
13

Solve for x. A) 46 B) 38 C) 45 D) 40

Mathematics
1 answer:
yarga [219]2 years ago
8 0

Answer:

C) 45

Step-by-step explanation:

By Basic Proportionality Theorem:

\frac{x}{18}  =  \frac{20}{8}  \\  \\x =   \frac{18 \times 20}{8}   \\  \\ x =  \frac{360}{8}  \\  \\ x = 45

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Max and pedro both clean pools. Each charges a flat fee to clean a pool. Max cleans 12 pools in 8 hours and earned $270. Pedro c
marshall27 [118]

Answer:

The number of pools clean per hour is 1.5

Step-by-step explanation:

Given as :

The number of pools clean in 8 hours = 12

The number of pools clean in 7.5 hours = 9

Let The number of pools they clean per hours = x

I.e x = \frac{8}{12} +  \frac{7.5}{9}

Or, x =  \frac{24+30}{36}

Or, x =  \frac{54}{36}

∴   x =  \frac{3}{2}

I.e x = 1.5

Hence The number of pools clean per hour is 1.5 Answer

3 0
3 years ago
Consider x^4+8xy^2=-135 find dy/dt when x=3, y=-3 and dx/dt=2
-BARSIC- [3]

Answer:

0.3224 listen in class

4 0
3 years ago
Guy's y'all plzz answer this who knows about it...and also exam is near​
Yanka [14]

Answer:

Step-by-step explanation:

Okay so I will explain the first one.

2 to the power of 4 = 2x2x2x2

2 to the power of 6 = 2x2x2x2x2x2

2 to the power of 4 = 2x2x2x2

2^4 = 16

2^6 = 64

When you are multiplying powers you add.

+

When you subtract you takeaway.

-

So you would do

4+6+4

= 14

Meaning 2 to the power of 14

2x^{14}

So what is 2 to the power of 14.

You would do

2x2x2x2x2x2x2x2x2x2x2x2x2x2

The answer is 16384

You can also use a calculator

GOOD LUCK FOR YOUR TEST!

7 0
3 years ago
How would you solve this without a calculator?
Soloha48 [4]

Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.

Exact Form:

1351+780\sqrt{3}

Decimal Form:

2701.99962990

Thus, <em>2,701</em> is your answer

5 0
2 years ago
After the outbreak of a mysterious disease the average wait time at a hospital increased by 70% before the outbreak the average
qaws [65]

Answer:

1.7m

Step-by-step explanation:

Given that 'm' was the waiting time before the outbreak

After the outbreak, waiting time increased by 70%.

This implies that :

70% of m increase

m + 70% of m

m + 70/100 of m

m + ( 70÷100 ) × m

m + 0.7m

= 1.7m

4 0
3 years ago
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