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3 years ago

If 4x-1=X, Find 30x a) 10 b) 40 C) 12 d)11 How do you solve this?

Mathematics

1 answer:

cestrela7 [59]3 years ago

3 0

Answer:

(a)

Step-by-step explanation:

Given

4x - 1 = x ( subtract x from both sides )

3x - 1 = 0 ( add 1 to both sides )

3x = 1 ( multiply both sides by 10 )

30x = 10 → (a)

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Write the volume of a cylinder with a base radius 3 m and height 8 m in terms of pi

IRISSAK [1]

Answer:

72π (in terms of pi)

Step-by-step explanation:

V = π·r²·h

Plug in the values.

V = π·3²·8

Solve.

V = 72π

To leave an equation in terms of pi, just square, multiply, and leave pi at the end.

3² = 9·8 = 72

72π

If you need the answer fully simplified, it is 226.19 (rounded up).

3 0

2 years ago

A scuba diver descends in the water at a rate of 15 feet per minute for 2.6 minutes. He immediately changes course when he sees

emmainna [20.7K]

Answer:

${ \longrightarrow{ \sf{2.6 minutes \longleftarrow}}}$

Step-by-step explanation:

Scuba diver is going downward with cetain speed for 2.6 minutes

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2 years ago

Im not sure ... does anyone know .....

Marina86 [1]

Answer:

I think it's -6. I have no idea

8 0

2 years ago

Which property justifies the following statement?

TiliK225 [7]

Answer:

substitution property of equality

Step-by-step explanation:

im assuming this means that you substitute x's value of 2 into the equation y=3x2-11. i'm guessing that it's meant to be 3x2, instead of 3.2. i hope this makes sense, and i hope i answered it as you needed!

6 0

3 years ago

Read 2 more answers

How do you do <br> (x+y)(x-5y)+3(x+y)^2<br> ???? <br> Emergency, please help with full steps

Naddik [55]

Answer:

$4 {x}^{2} + 2xy - 2 {y}^{2}$

Step-by-step explanation:

$(x + y)(x - 5y) + {3(x + y)}^{2} \\ x(x - 5y) + y(x - 5y) + 3(x + y)(x + y) \\ {x}^{2} - 5xy + xy - 5 {y}^{2} + (3x + 3y)(x + y) \\ {x}^{2} - 4xy - 5 {y}^{2} + 3x(x + y) + 3y(x + y) \\ {x}^{2} - 4xy - 5 {y}^{2} + 3 {x}^{2} + 3xy + 3xy + 3 {y}^{2} \\ {x}^{2} - 4xy - 5 {y}^{2} + 3 {x}^{2} + 6xy + 3 {y}^{2} \\ {x}^{2} + 3 {x}^{2} - 4xy + 6xy - 5 {y}^{2} + 3 {y}^{2} \\ 4 {x}^{2} + 2xy - 2 {y}^{2}$

7 0

3 years ago