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3 years ago

I need help plz someone help me

Mathematics

2 answers:

vova2212 [387]3 years ago

6 0

Answer:

150min

Step-by-step explanation:

RideAnS [48]3 years ago

4 0

150 minutes is the answer Big Brain

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Help pls! Giving brainliest!!!!!

RUDIKE [14]

Answer:

$27 = 3 \times 3 \times 3\\\\\frac{1}{27} = \frac{1}{3 \times 3 \times 3} = \frac{1}{3^{3}} = 3^{-3}$

option 3

3 0

3 years ago

I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER

Step2247 [10]

Answer:

$A = 297\pi$

Step-by-step explanation:

To solve this problem we need to be familiar with the formula for the surface area of a cone:

$A = \pi r(r + \sqrt{h^2+r^2})$

We are given the length of a side and the diameter, to calculate the radius divide the diameter in half:

$r = \frac{d}{2}\\r = \frac{18}{2}\\r = 9 cm$

To calculate the height of the cone, we must use the Pythagorean Theorem:

$C^2 = A^2 + B^2$

We can treat the side length as the hypotenuse $C$ , the radius as the base $A$ , and solve for height $B$ . Set the expression up like this:

$C^2 = A^2 + B^2\\24^2 = 9^2 + B^2\\B^2 = 24^2 - 9^2\\B = \sqrt{24^2 - 9^2}\\B = \sqrt{576 - 81}\\B = \sqrt{495}\\B \approx 22.25$

Now we can plug into our original formula:

$A = \pi r(r + \sqrt{h^2+r^2})\\A = \pi 9(9+\sqrt{\sqrt{495}^2+9^2}\\A = \pi 9(9+\sqrt{495 + 81}\\A = \pi 9(9+\sqrt{576})\\A = \pi 9(9 + 24)\\A = \pi 9(33)\\A = 297\pi$

5 0

2 years ago

Solve. -2 1/3 - (-5)=

VMariaS [17]

Answer:

$\frac{8}{3}$

Step-by-step explanation:

$-2\frac{1}{3} - (-5)\\=\frac{-7}{3} + 5\\= \frac{-7}{3} + \frac{15}{3} \\= \frac{8}{3}$

Hope this helps!

7 0

3 years ago

Read 2 more answers

How much is a 15-percent down payment on a purchase price of $205,000?

enot [183]

205,000*0.15=<span>30750

0.15 is the down payment
205,000 is the full price</span>

8 0

3 years ago

Quick question, is this the same as this???

salantis [7]

Your first steps are correct. Mult. the given fraction by (1+sqrt(5)) / (1+sqrt(5)).

Result: 8(1 + sqrt(5) ) 8(1 + sqrt(5) )
------------------- = ----------------------
1 - 5 -4

Must keep that denominator (-4).

8 0

3 years ago