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-BARSIC- [3]
3 years ago
11

After 35 minutes, he started charging his phone. 21 minutes later, the battery is at 23%. Explain how you would determine when t

he phone will be charged to 100%
Mathematics
1 answer:
VLD [36.1K]3 years ago
6 0

Answer:

91.30 minutes

Step-by-step explanation:

Assuming that when you start charging the phone it had 0% charge, what you should do is a rule of three.

That is, yes in 21 minutes I charge 23%, how long will it take to charge 100%.

charge time     charge percentage.

21 minutes                  23%

 x minutes                  100%

Then it would be:

x = 100 * 21/23 = 91.30

So you would have to wait 91.30 minutes to wait for the full charge.

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Expand and simplyfy 4(2x+3) +4(3x+2)
Aleonysh [2.5K]

Answer:

x=1 I'm not sure if I'm correct

Step-by-step explanation:

4x2x=8x

4x3=12

4x3x=12x

4x2=8

8x+12=12x+8

8x-12x= 8-12

-4x=-4 divide -4x in both side so the answer should be x=1

4 0
3 years ago
The volume of a triangular prism is 20 cubic mm. If the dimensions were doubled, what would the new
anygoal [31]

Answer:

The new volume will be 160 mm^3

Step-by-step explanation:

The volume of a triangular prism can be calculated by multiplying the area of the triangular base by the height.

Let’s say we have the base with dimensions a and b, while the height can be h

The volume can be calculated as

V = 1/2 * a * b * h

Now , to answer this question, we shall be choosing arbitrary lengths for a, b and h. Whatever length we shall be choosing , we should make sure that they must be equal to 20 mm^3.

Let’s say we have a as 2mm , b as 4 mm and H as 5 mm

Plugging these into the equation, we surely have our volume as 20 mm^3

Now let’s double these dimensions. Our new dimensions become , 4mm by 8mm by 10mm

Plugging these new values into the equation, we have;

1/2 * 4 * 8 * 10 = 160 mm^3

Thus, our volume is expected to be increased by a factor of 8

7 0
3 years ago
A) how many 3/5s are in 1<br> b) use the answer to part A to find the number of 3/5s in 2
BabaBlast [244]
a)\frac{1}{\frac{3}{5}}=1*\frac{5}{3}=\frac{5}{3}\\\\&#10;There\ are\ 1\frac{2}{3}\ of\ \frac{3}{5}s\ in\ 1.\\\\&#10;b)\frac{2}{\frac{3}{5}}=2*\frac{5}{3}=\frac{10}{3}\\\\There\ are\ 3\frac{1}{3}\ of\ \frac{3}{5}s\ in\ 2.
5 0
3 years ago
Read 2 more answers
The coordinates of rectangle ABCD are A(1, 2), B(4, 5),C(9, 0) and D(6, -3). What is the area of the rectangle? 18 square units
Natali5045456 [20]
In order to find the area of a rectangle, the formula is L*W (Length multiplied by Width). Our goal is to find these two measurements, so we will take the following steps:
1) Plot the coordinates on a graph (I have attached a visual guide)
2) Using the Pythagorean Theorem, or the Distance formula we can find the length and width: \sqrt{(x_{2}-x_{1} )^{2} +(y_{2}-y_{1} )^{2}
3) We will use these values in the Area formula for a rectangle (L*W)
4) After solving the Area formula with the values retrieved from the Distance Formula we find that the area is roughly 30 units squared.

4 0
4 years ago
What is the expression l x w represent
zzz [600]
Im pretty sure it is length times width :)

4 0
3 years ago
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