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3 years ago

If it rained on 3 days ut of 20 days on what percent of the days did it rain

Mathematics

2 answers:

kvv77 [185]3 years ago

7 0

It rained 15% of 20 days.

vovikov84 [41]3 years ago

5 0

Let's set up a proportion.
3/20=x/100
Because 20*5=100, you can determine x by multiplying the numerator by 5 as well.
3*5=15
x=15
15%

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Use the graph of the exponential growth function f(x) = a(2x) to determine which statement is true. f(0) = 2 when a =1/2 . f(0)

Kryger [21]

Math symbols were invented for a reason. They help communicate your intent. Here, it looks like you may intend

... f(x) = a(2^x)

When x=0, this will have the value "a". When x=1, this will have the value a^2. The appropriate selection is

... f(0) = 3 when a = 3

3 0

4 years ago

Read 2 more answers

Which side lengths form a right triangle?

azamat

Answer:

The Answer is Letter C!!!

Step-by-step explanation:

The Reason why I choose letter C was because Every Right Triangle contains 120°!!! Since 50+40+30 equals 120, Letter C is the correct answer!! (õ_õ)

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3 years ago

In a three-digit positive integer , if the hundreds digit cannot be 1 and the neighbor digits cannot be repetition, how many pos

andreev551 [17]

Answer:

Option (E) 648

Step-by-step explanation:

the 3 digit number can be represented by the blanks as " _ _ _ "

Now,

we have 10 choices ( i.e 0,1,2,3,4,5,6,7,8,9) available for each place in the blank if no condition is applied.

For the hundreds digit, using the conditions given in the question, we have 8 choices left

as 1 and 0 cannot be included in the hundreds place.

for the tens place

we will have 9 choices left out of 10 ( as 1 choice is less because we cannot have same number as on the hundred place )

similarly, for the ones place we have 9 choices left out of 10 ( as 1 choice is less because we cannot have same number as on the tens place )

Therefore,

Total possibilities = 8 × 9 × 9 = 648

Hence,

Option (E) 648

6 0

3 years ago

I have to find the slope and the y-intersect from these graphs. It would mean alot if someone could help with at least one of th

Sati [7]

Answer:

Alright bear with me, this is gonna be a long one.

The Y INTERCEPT

So the y-intercept is going to be where the line intersects the Y-AXIS. The y-axis is the vertical part of the graph with the numbers on it.

So, for the first one, the line goes through the origin which means that that the y intercept is going to be (0,0)

The next one, the line intersects the y-axis at (0,1)

Here's a tip: the y-intercept will always have 0 as it's x coordinate.

The Slope

Alright, the slope of a vertical line can be found using an equation. Most typically people will describe the slope as RISE/RUN meaning how many units you move up "rise" and how many units you move horizontally "run" to touch the line. Of course, it's easier when you can identify points.

So to make this a little bit easier to understand, I will show you how to use the equation to find the slope.

$\frac{y2-y1}{x2-x1}$

So for this equation, what you need is two coordinates. So for the first graph, I'm going to use the points (0,0) and (1,3)

$\frac{3-0}{1-0}$

So we make the three y2 because it's the second y coordinate and the y1 would be 0. Same applies to the x coordinates but use the x values.

the slope for the first graph would be 3/1

FOR THE SECOND GRAPH

$\frac{y2-y1}{x2-x1}$

Here's our equation now pick two points. I'll be using (-5,4) and (0,1)

$\frac{1-4}{0-(-5)}$

Don't forget that a negative-a negative = positive

which will leave you with

$\frac{-3}{5}$

since it can't be simplified any further, your slope is -3/5.

I hope I was able to help you understand this a bit better :)

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4 years ago

HELP PLS :D

S_A_V [24]

Answer:

: 5 (4x - 9) - if u wanted me to solve this or just simplifie it also im not fully confident in this im sure the second person answering this is better anyways

2: 9x + 4

3: 12 + 2x

Step-by-step explanation: correct me in comments plz bc im not confident in thisss

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3 years ago