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2 years ago

5

I will give brainliest if you solve #11 please and thank you!!!

2 answers:

julsineya [31]2 years ago

7 0

Answer:

39.6%

Step-by-step explanation: 99/250=39.6%

creativ13 [48]2 years ago

6 0

Answer:

$A)~ 39.6$ %

----------------

$Total~ number~ of~ students:-$

$42+58+20+84+41+5$

$=250$

$soccer=58+41$

$=99$

$99/250*100$

$=0.39*100$

$=39$

<u>------------------------</u>

<u>hope it helps...</u>

<u>have a great day!!</u>

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13(10 + 2) could be used to simplify which of the following problems?

Veseljchak [2.6K]

Well first you need to show the rest of the problems before i can truely help you sorry.

6 0

3 years ago

Please help me - thankyou :)

olga_2 [115]

It is 6 because 1000 would not be the appropiate answer

3 0

3 years ago

A pyramid has a square base of length 8cm and a total surface area of 144cm². Find the volume of the pyramid. (Please use Pythag

Sveta_85 [38]

Answer:

$\displaystyle V_{ \text{pyramid}}= 64 \: {cm}^{3}$

Step-by-step explanation:

we are given surface area and the length of the square base

we want to figure out the Volume

to do so

we need to figure out slant length first

recall the formula of surface area

$\displaystyle A_{\text{surface}}=B+\dfrac{1}{2}\times P \times s$

where B stands for Base area

and P for Base Parimeter

so

$\sf\displaystyle \: 144=(8 \times 8)+\dfrac{1}{2}\times (8 \times 4) \times s$

now we need our algebraic skills to figure out s

simplify parentheses:

$\sf\displaystyle \: 64+\dfrac{1}{2}\times32\times s = 144$

reduce fraction:

$\sf\displaystyle \: 64+\dfrac{1}{ \cancel{ \: 2}}\times \cancel{32} \: ^{16} \times s = 144 \\ 64 + 16 \times s = 144$

simplify multiplication:

$\displaystyle \: 16s + 64 = 144$

cancel 64 from both sides;

$\displaystyle \: 16s = 80$

divide both sides by 16:

$\displaystyle \: \therefore \: s = 5$

now we'll use Pythagoras theorem to figure out height

according to the theorem

$\displaystyle \: {h}^{2} + (\frac{l}{2} {)}^{2} = {s}^{2}$

substitute the value of l and s:

$\displaystyle \: {h}^{2} + (\frac{8}{2} {)}^{2} = {5}^{2}$

simplify parentheses:

$\displaystyle \: {h}^{2} + (4 {)}^{2} = {5}^{2}$

simplify squares:

$\displaystyle \: {h}^{2} + 16 = 25$

cancel 16 from both sides:

$\displaystyle \: {h}^{2} = 9$

square root both sides:

$\displaystyle \: \therefore \: {h}^{} = 3$

recall the formula of a square pyramid

$\displaystyle V_{pyramid}=\dfrac{1}{3}\times A\times h$

where A stands for Base area (l²)

substitute the value of h and l:

$\sf\displaystyle V_{ \text{pyramid}}=\dfrac{1}{3}\times \{8 \times 8 \}\times 3$

simplify multiplication:

$\sf\displaystyle V_{ \text{pyramid}}=\dfrac{1}{3}\times 64\times 3$

reduce fraction:

$\sf\displaystyle V_{ \text{pyramid}}=\dfrac{1}{ \cancel{ 3 \: }}\times 64\times \cancel{ \: 3}$

hence,

$\sf\displaystyle V_{ \text{pyramid}}= 64 \: {cm}^{3}$

8 0

2 years ago

-(6)^-1<br> a.6<br> b.1/6<br> c.-1/6<br> d.-6<br><br> No idea what I'm doing...

Monica [59]

$-(6)^{-1} = ?$
<span>Representing in fraction for the best understanding
</span> $-(\frac{6}{1}) ^{-1} = ?$ <span>
When the exponent is negative, the inversion is made, the numerator becomes the denominator, and the denominator becomes the numerator, and the change of signal from the exponent, which was negative, becomes positive.

</span> $-( \frac{1}{6} )^1 =$
$\boxed{\boxed{- \frac{1}{6}}}\end{array}}\qquad\quad\checkmark$

Answer:
c.-1/6

7 0

3 years ago

Which step should be performed first when simplifying 25 − (14 − 8) + 3 × 2?

Vanyuwa [196]

Answer:

(14-8)

Step-by-step explanation:

Heres why:

Pedmas

P= Parenthesis

E=Exponents

D=Division

M=Multiplication

A=Addition

S= Subtraction

Do that in order.

7 0

3 years ago