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3 years ago

Plz help me with this

Mathematics

2 answers:

GuDViN [60]3 years ago

6 0

Answer:

h = $\frac{V}{r^2\pi }$

Step-by-step explanation:

Given

V = πr²h

Isolate h by dividing both sides by πr²

h = $\frac{V}{r^2\pi }$ → C

stich3 [128]3 years ago

3 0

Answer: $\bold{c)\quad h=\dfrac{V}{\pi r^2} }$

Step-by-step explanation:

$V=\pi r^2h\\\\\text{In order to isolate h, divide both sides by }\pi r^2\\\large\boxed{\dfrac{V}{\pi r^2}=h}$

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Plzzzzzz helppppp meeee !!!

Anon25 [30]

Answer:

Corresponding side of AB is FE

Corresponding side of CB is DE

Corresponding side of AC is FD

$k =2$

$DE = 6$

$FD=10$

Step-by-step explanation:

Given

$\triangle ABC$ and $\triangle FED$

See attachment for triangles

Solving (a): Corresponding side of AB

Going by the names of the triangle, the corresponding sides are:

AB and FE; CB and DE; AC and FD

Hence, the corresponding side of AB is FE

Solving (b): Corresponding side of CB

This has been solved in (a) above.

The corresponding side of CB is DE

Solving (c): Corresponding side of AC

This has been solved in (a) above.

The corresponding side of AC is FD

Solving (d): Scale factor from ABC to FED

To do this, we simply divide the lengths of corresponding sides.

The scale factor k is:

$k = \frac{FE}{AB}$

$k = \frac{8}{4}$

$k =2$

Solving (e): Length of DE

We make use of the scale factor calculated in (d) above

$k = \frac{DE}{CB}$

$2 = \frac{DE}{3}$

$DE = 2 * 3\\$

$DE = 6$

Solving (f): Length of FD

Using Pythagoras:

$FD^2 = DE^2 + EF^2$

$FD^2 = 6^2 + 8^2$

$FD^2 = 100$

$FD = \sqrt{100$

$FD=10$

7 0

3 years ago

Find the vertex for the parabola given by the function ƒ(x) = −3x^2 − 6x.

telo118 [61]

Answer:

B) (−1, 3)

Step-by-step explanation:

The standard form of a quadratic function is

y = ax² + bx + c

The vertex form of a parabola is

y = a(x - h)² + k

where (h, k) is the vertex of the parabola.

h = -b/(2a) and k = f(h)

In your equation, ƒ(x) = −3x² − 6x

a = -3; b = -6; c = 0

Calculate h

h = -(-6)/2(-3)]

h = 6/(-6)

h = -1

Calculate k

k = -3(-1)² -6(-1)

k = -3 + 6

k = 3

So, h = -1, k = 3, a = -3

The vertex form of the equation is f(x) = -3(x + 1)² + 3.

The vertex is at (-1, 3).

The figure below shows the graph of ƒ(x) = −3x² − 6x with the vertex

at (-1, 3).

4 0

3 years ago

Express this number in scientific notation

AnnZ [28]

Please include the number or a photograph or it! Thank you!

3 0

4 years ago

A 50 Blo 5,000 is times greater than 500. C 1,000 D 100

Phoenix [80]

Answer:

c is the answer there is a thousand digference between them

8 0

3 years ago

Please help me with this problem.

ryzh [129]

Answer:

1/4a -1/6b + 1/10c

Step-by-step explanation:

1/2 a -1/3 b + 1/5c + -1/4a + 1/6 b - 1/10c

Combine like terms

1/2a - 1/4a -1/3b + 1/6b +1/5c - 1/10 c

2/4a -1/4a -2/6b + 1/6b +2/10c -1/10c

1/4a -1/6b + 1/10c

5 0

3 years ago

Read 2 more answers