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3 years ago

I know the answer but what’s the work

Mathematics

2 answers:

Reika [66]3 years ago

7 0

Answer:

Step-by-step explanation:

Hope you understand my writing :)

mina [271]3 years ago

4 0

Answer:

(0.5r^2pi) + (0.5r^2pi) + (bh)

Step-by-step explanation:

All you need to do is to find the area of each shape, then add all areas together.

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Solve the equation. <br> x/5 + 9 =4

shtirl [24]

X/5+9=4
Subtract each side by 9
X/5=-5
Multiply each side by 5
X=-25

5 0

3 years ago

Read 2 more answers

The truck's tank is a stainless steel cylinder. Find the surface area of the tank. Round your answer to the nearest hundredth.

Feliz [49]

Answer:

Area of the truck tank is $1356.48ft^2$

Step-by-step explanation:

It is given height of the cylinder h = 50 ft

Radius of cylinder is r = 4 ft

Surface area of the cylinder is equal to

$A=2\pi rh+2\pi r^2$

Now putting the value of r and h

$A=2\times 3.14\times 4\times 50+2\times 3.14\times 4^2$

$=1356.48ft^2$

Therefore area of the truck tank is $1356.48ft^2$

8 0

3 years ago

Joel made egg sandwiches and tuna sandwiches in the ratio 2:3. He then made 15 more tuna sandwiches and the ratio changed to 1:3

Aleksandr [31]

Answer:

40 sandwiches

Step-by-step explanation:

egg sandwiches : tuna sandwiches

2 : 3

Multiply by x because we do not know how many sandwiches, just the ratio

2x : 3x

Add 15 tuna sandwiches

2x : 3x+15

Now the ratio is 1:3

egg sandwiches : tuna sandwiches

1 : 3

Multiply by y because we do not know how many sandwiches, just the ratio

y : 3y

Set the number of egg sandwiches equal

2x =y

then set the number of tuna sandwiches equal

3x+15 = 3y

We know have a system of 2 equations and 2 unknowns

Substitute y =2x into the second equation

3x+15 = 3(2x)

Distribute

3x+15 = 6x

Subtract 3x from each side

3x-3x+15 = 6x-3x

15 =3x

Divide by 3

15/3 = 3x/3

5 =x

egg sandwiches : tuna sandwiches

2 : 3

Multiply by x because we do not know how many sandwiches, just the ratio

2x : 3x

2*5 3*5

10 15

He originally made 10 egg sandwiches and 15 tuna sandwiches

Then he made 15 more tuna sandwiches

The total number of sandwiches he made is

10+15+15 = 40 sandwiches

5 0

3 years ago

Multiply. x + 4x + 2 2x2 + 3x – 4

Yuliya22 [10]

Answer:

I think question is:

(x+4x+2)(2x^2+3x-4)

:(5x+2)(2x^2+3x-4)

5x(2x^2+3x-4)+2(2x^2+3x-4)

10x^3+15x^2-20x+4x^2+6x-8

10x^3+19x^2-14x-8

7 0

3 years ago

7>-4; subtract 7 from both sides

motikmotik

Answer:

The end result would be 0>-11

Step-by-step explanation:

Subtract 7 from each number and then just write it again.

7 - 7 = 0

-4 - 7 = -11

0>-11

5 0

3 years ago