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3 years ago

I NEED HELP RIGHT NOW PLS!!

Mathematics

2 answers:

Zarrin [17]3 years ago

6 0

Answer:

I think the answer is 2 because 2.5 x 2 = 5.

I'm sorry if this is wrong, I'm a bit unsure.

Step-by-step explanation:

Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!

Genrish500 [490]3 years ago

6 0

Answer:

Step-by-step explanation:

we simply divide 2 1/2 from 5

5÷2 1/2

5÷5/2

5×2/5

2(we cancel five)

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If Peter withdrew $47.27 from the bank and deposited $598, how would his bank account change? (Indicate how much his account wou

fredd [130]

Answer:

Since we do not know the balance we should start with, a general answer:

$b_{new} = b_{old} + \sum_{i} d_{i} - \sum_{j} w_{j} \\$

598 - 47,27 = 550,73, assuming b_old was 0$ for your example

Step-by-step explanation:

b stands for balance (old - before any deposits or withdrawals, new after all done)

d for deposits

w for withdrawals

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2 years ago

The school currently has 30 classrooms. With the addition, there will be 40 classrooms. What percentage of the current number of

stiv31 [10]

The answer is 34%
30+33%=39.9
So round up two 34%
I hope that is right but I think the answer is 34%

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2 years ago

Scientific notation 100400

ad-work [718]

1.004 * 10^5
all scientific notation equations have to be a number greater than 1 but less than 10
then multiplied by 10 to the power of (move the decimal point to the right however many times you need, in this case 5) :)

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3 years ago

The radius of the tires of a car is 18 inches, and they are revolving at the rate of 651 revolutions per minute. How fast is the

Mumz [18]

So the car is moving at 651 revolutions per minute, with wheels of a radius of 18inches

so, one revolution, is just one go-around a circle, and thus 2π, 651 revolutions is just 2π * 651, or 1302π, the wheels are moving at that "angular velocity"

now, what's the linear velocity, namely, the arc covered per minute

well $\bf v=rw\qquad 
\begin{cases}
v=\textit{linear velocity}\\
r=radius\\
w=\textit{angular velocity}\\
----------\\
r=18in\\
w=1302\frac{\pi }{min}
\end{cases}\implies v=18in\cdot \cfrac{1302\pi }{min}
\\\\\\
v=\cfrac{23436\pi\ in}{min}$

now, how much is that in miles/hrs? well
let's keep in mind that, there are 12inches in 1foot, and 5280ft in 1mile, whilst 60mins in 1hr

thus $\bf \cfrac{23436\pi\ in}{min}\cdot \cfrac{ft}{12in}\cdot \cfrac{mi}{5280ft}\cdot \cfrac{60min}{hr}\implies \cfrac{23436\cdot \pi \cdot 60\ mi}{12\cdot 5280\ hr}$

notice, after all the units cancellations, you're only left with mi/hrs

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2 years ago

A line passes through (-2, -8) and (4, 10). What is the slope?

BigorU [14]

Answer is m= 3, hope this helps <3

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3 years ago