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3 years ago

Find the surface area of the composite solid.

Mathematics

1 answer:

Katarina [22]3 years ago

7 0

Answer:

343.6 meters cubed

Step-by-step explanation:

28+96+96+96+27.6=343.6

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Lainey bought a set of 20 markers for $6. what is the cost of 111 marker?

rjkz [21]

Answer: $33.30

Step-by-step explanation:

If one marker is 6/20. (0.3) So, 6/20*111= 333/10. That's $33.30.

5 0

3 years ago

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PLS help will give brainly points thank you

frez [133]

Answer:

I think the answer will be 20. It is oppsite sides and the lines look even. The area is small as well. So I think 20˙ will be the best option.

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3 years ago

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Find all points on the circle (x^2) + (y^2) = 676 where the slope is 5/12

borishaifa [10]

Implicit defferentation

remember that dy/dx y= dy/dx

so
take derivitive of both sides
$2x+2y \space\ \frac{dy}{dx}=0$
solve for $\frac{dy}{dx}$
minus 2x both sides
$2y \space\ \frac{dy}{dx}=-2x$
divide both sides by 2y
$\frac{dy}{dx}=\frac{-2x}{2y}$
$\frac{dy}{dx}=\frac{-x}{y}$

when is the slope equal to $\frac{5}{12}$
solve for $\frac{dy}{dx}=\frac{5}{12}$
$\frac{dy}{dx}=\frac{5}{12}$
$\frac{5}{12}=\frac{-x}{y}$
$5y=-12x$
$y=\frac{-12}{5}x$
find where the circle and this line intersects

substitute $\frac{-12}{5}x$ for y
$x^2+(\frac{-12}{5}x)^2=676$
$x^2+\frac{144}{25}x^2=676$
$\frac{25}{25}x^2+\frac{144}{25}x^2=676$
$\frac{169}{25}x^2=676$
times both sides by $\frac{25}{169}$
$x^2=100$
sqrt both sides, take positive and negative roots
x=+/-10

sub back

$y=\frac{-12}{5}x$
$y=(\frac{-12}{5})(10) \space\ or \space\ (\frac{-12}{5})(-10)$
$y=\frac{-120}{5} \space\ or \space\ \frac{120}{5}$
$y=-24 \space\ or \space\ 24$

the points are (10,-24) and (-10,24)

8 0

3 years ago

Perry Mazza wants to borrow $30,000 from the bank. The interest rate is 6% and the term is for 5 years. What is the amount of in

omeli [17]

Answer: In both the case amount of interest is paid are:

1) $9000

2) $10146.76

Explanation:

Since we have given that

Principle amount = $30000

Interest rate = 6%

Number of years = 5 years

we'll use " Simple interest " first,

As we know the formula for " Simple Interest ":

$I=\frac{P\times R\times T}{100}\\\\I=\frac{30000\times 6\times 5}{100}\\\\I=$9000$

Now, we'll do it by "Compound Interest "

$Amount=P(1+\frac{r}{100})^n\\\\Amount=30000(1+\frac{6}{100})^5\\\\Amount=$40146.76$

So,

$Interest = Amount-Principle\\\\Interest =40146.76-30000\\\\Interest =\$10146.76$

Hence in both the case amount of interest is paid are:

1) $9000

2) $10146.76

8 0

3 years ago

Area = 84<br> x + 5<br> Solve for x

MaRussiya [10]

Answer: 79

Step-by-step explanation:

5 0

3 years ago