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2 years ago

Find the total surface area of this cone, leaving your answer in terms of pi

Mathematics

2 answers:

tiny-mole [99]2 years ago

7 0

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salantis [7]2 years ago

6 0

Answer:

Surface area = 70π cm²

Step-by-step explanation:

Surface area = πr² + πrl

Surface area = (π × 5 × 5) + (π × 5 × 9)

Surface area = (25π) + (45π)

Surface area = 70π cm²

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joanna can buy 15 square yards of carpet for $240 using the same rate how many square yards of carpet can she buy for $320

Sladkaya [172]

Answer:

x =20

Step-by-step explanation:

We can use proportions to solve

$240 320

----------- = ------------

15 x

Using cross products

240x = 320 * 15

240x =4800

Divide by 240 on each side

240x/240 = 4800/240

x =20

8 0

3 years ago

Which function represents exponential decay? f(x) = One-half (three-halves) Superscript x f(x) = One-half (negative three-halves

viva [34]

Answer:

$f(x) = 4(\frac{2}{3})^{x}$

Step-by-step explanation:

The first function is given as, $f(x) = \frac{1}{2}(\frac{3}{2})^{x}$ .

Now, the value of this function increases i.e. value of f(x) increases as the x-value increases because $\frac{3}{2} > 1$ .

Now, the second function is given as, $f(x) = \frac{1}{2}(- \frac{3}{2} )^{x}$ .

This function can not be considered as a continuous function because $- \frac{3}{2} < 0$ .

Again, the third function is given as, $f(x) = 4(- \frac{2}{3})^{x}$ .

This function can also not be considered as a continuous function because $- \frac{2}{3} < 0$ .

Finally, the fourth function is given to be, $f(x) = 4(\frac{2}{3})^{x}$ .

In this function, the value of f(x) continuously decreases as the value of x increases, because $0 < \frac{2}{3} < 1$ .

Therefore, this function represents exponential decay. (Answer)

10 0

3 years ago

Read 2 more answers

∠A=8x+6 ∘ start color #11accd, angle, A, end color #11accd, equals, start color #11accd, 8, x, plus, 6, degrees, end color #11ac

zvonat [6]

Answer:

$x = 8$

$B = 70$

Step-by-step explanation:

Given

$A = 8x + 6$

$B = 4x + 38$

Require

Determine x and <B

Missing in the question: A and B are vertical angles

For vertical angles A and B,

$A = B$

Substitute values for A and B

$8x + 6 = 4x + 38$

Collect Like Terms

$8x - 4x = 38 - 6$

$4x = 32$

Solve for x

$x = 32/4$

$x = 8$

To solve for B, substitute 8 for x in $B = 4x + 38$

$B = 4 * 8 + 38$

$B = 32 + 38$

$B = 70$

8 0

3 years ago

Read 2 more answers

Three fifths of the cast in a musical have to sing.What fraction on the cast does not have to sing?

notka56 [123]

The term "three fifths" is equivalent to $\frac{3}{5}$ .
If $\frac{3}{5}$ of the cast is singing, then we just have to find the rest of the fraction.
$1- \frac{3}{5} \\ \frac{5}{5}- \frac{3}{5} \\ \frac{2}{5}$

7 0

2 years ago

Read 2 more answers

Can the quadratic polynomial x2+kx+k have equal zeroes for some odd integer k>1

PilotLPTM [1.2K]

No.
The only value that can be put in K that would have the same zeros would be 4 but 4 is not an odd integer. If there was an odd integer that the sum and product would be the same then it would lie on the x-axis. but only 4 fits the criteria.

7 0

3 years ago