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Sergeu [11.5K]
3 years ago
6

Help plz

Mathematics
2 answers:
Yuki888 [10]3 years ago
8 0
A) V * (2/5) = I
B) V = I + 42

Substituting A into B
V = (2/5) V + 42
3/5 V = 42
Victor has 70 tools
Ilya has 28 tools

together they have 98 tools


WINSTONCH [101]3 years ago
8 0

Answer:

They have 98 tools together

Step-by-step explanation:

  • We are going to call x the number of tools Ilya has.
  • If Victor has 42 more tools than Ilya, then he has x + 42 tools.
  • But we know that the ratio of Victor's tools to Ilya's is 5:2, so the actual number of tools they have must satisfy this radio.

If we write this last paragraph in an equation and solve for x we would get: \frac{5}{2} =\frac{x+42}{x} \\5x=2(x+42)\\5x=2x+84\\5x-2x=84\\3x=84\\x=28

Therefore Ilya has 28 tools and Victor has x+42 = 28 + 42 = 70 tools. And together they have:

70 + 28 = 98 tools.

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I need to find surface area of a cylinder. Formula being used: S.A= L x W +
Arturiano [62]

Answer:

90π yd²

Step-by-step explanation:

the surface area of a cylinder is the sum of the lateral area and twice the aera of one end of the cylinder:  π·d·l, where l represents the length of the cylinder.  Here, the lateral surface area is π·6 yd·12 yd, or 72π yd².

The two ends add the following to the total surface area:

2·π·(d/2)², or 2π·d²/4.

Thus, the total surface area of the cyl. is

A = 2π·(6 yd)²/4 + 72π yd², or

A = 18π yd² + 72π yd² = 90π yd²

Note:  Please check your source.  L x W +  2pi ·r ^2 is incorrect.

5 0
4 years ago
What is the average speed of an object that travels 50 miles in 2 hours?
PolarNik [594]
25 mph
just divide by 2

7 0
3 years ago
Read 2 more answers
6-1/3 divided by 1/4 equals?
bagirrra123 [75]
The answer will be -8
hope this help!!!!!!!!!
6 0
3 years ago
Eunice buys dog bed with a listed price of $31. Eunice uses a sale that provides 30% off. What is the total
Pachacha [2.7K]

Answer:

21.70

Step-by-step explanation:

First find the discount

31 * 30%

31 *.30

9.3

Subtract from the original amount

31 - 9.3

21.70

3 0
3 years ago
to build the garden of your dreams you need 11 m^3 of coil containing 46% clay. you have two types of soil you can combine to ac
aivan3 [116]

Answer: 9m^3 of soil with 50% clay and 2m^3 of soil with 28% clay is required

Step-by-step explanation:

Let x represent the quantity of the soil containing 50% clay that you would use.

Let y represent the quantity of the soil containing 28% clay that you would use.

To build the garden of your dreams you need 11 m^3 of soil.

x + y = 11 - - - - - - - - -1

Since the soil must contain 46% clay, the total amount of clay required is 46/100 × 11 = 5.06 m^3.

you have two types of soil you can combine to achieve this: soil with 50% clay and soil with 28% clay. This means that the quantity of both soils required to achieve 5.06 m^3 will be

0.5x + 0.28y = 5.06 - - - - - - - -2

Substituting x = 11 - y into equation 1, it becomes

0.5(11 - y) + 0.28y = 5.06

5.5 - 0.5y + 0.28y = 5.06

- 0.5y + 0.28y = 5.06 - 5.5

- 0.22y = - 0.44

y = - 0.44/ -0.22 = 2

Substituting y = 2 into x = 11 - y, it becomes

x = 11 - 2 = 9

7 0
3 years ago
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