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goldfiish [28.3K]
3 years ago
14

UP TO 50 POINTS ON BRAINLY

Mathematics
1 answer:
Gnoma [55]3 years ago
7 0

Answer:

273.075 millions users

Step-by-step explanation:

We can use the date and users as x and y values for our graph.

point 1 = (1994, 37.5)

point 2 = (1998, 70.0)

point 3 = (2002, 102.5)

We know that linear equation can be represented as y = mx + b

where m is the slope and b is the y intercept value when x equal to 0.

m = (y2 -y1)/(x2-x1) = (102.5 - 37.5)/(2002 -1994)

m = 8.125

Now let's solve for b by using point3 values.

102.5 = 8.125(2002) +b

b = -16163.8

Now predict two years from now.  Which is the year 2023.

For year 2023, how many mobile phone usage?

y = 8.125(2023) - 16163.8

y = 273.075 millions users

As for model robustness(reliability), it's fairly good be cause all three data points have consistent 8.125 slope.  So the predictivity is fairly accurate.

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The perimeter of a rectangular pen is 136 meters. If the length is 5 meters more than twice the width, what are the dimensions o
Sati [7]

Answer: width = 21, length = 47

<u>Step-by-step explanation:</u>

Length (L) = 2w + 5

width (w) = w

Perimeter (P) = 136

P = 2L + 2w

136 = 2(2w + 5) + 2w    <em>substituted the given values above</em>

136 = 4w + 10 + 2w       <em>distributed 2 on the right side</em>

136 = 6w + 10                <em>added like terms (4w and 2w)</em>

126 = 6w                       <em>subtracted 10 from both sides</em>

 21 = w                          <em>divided both sides by 6</em>

Length (L) = 2w + 5

                 = 2(21) + 5

                 = 42 + 5

                  = 47

7 0
3 years ago
The triangles are similar. What is the value of x?
jok3333 [9.3K]
Given that the two triangles are similar:
\frac{7}{28} =  \frac{25}{6x + 28}
\frac{1}{4} = \frac{25}{6x + 28}
6x + 28 = 4 x 25
6x + 28 = 100
6x = 100 - 28
6x = 72
x = 12

8 0
3 years ago
Read 2 more answers
Which absolute value expression represents the distance between the points shown on the number line?
stich3 [128]

Answer:

We will take option B.

Step-by-step explanation:

Option A) |4 − 1| = 3 units

Option B) |4 − (−1)| = 5 units

Option C) |−4 + (−1)| = 5 units

Option D) |−4 − (−1)| = 3 units.

Now, from the number line and from the points given on the number line it is clear that the distance from one point to another is 5 units.

So. option B or Option C can be the right one.

Now, the right side point is on +4 point and the left side point is on -1 point.

So, the distance between those points will be calculated as 4 - (- 1) = 5.

Therefore, we will take option B. (Answer)

3 0
3 years ago
I need the answer ASAP!
Rudik [331]
Put your finger on the zero and go 5 blocks to the right the go up 14 blocks then mark it with a point ฅ^•ﻌ•^ฅ
5 0
3 years ago
If you roll two fair six-sided dice, what is the probability that both dice show an odd number?
geniusboy [140]
It would be 50 percent or .5 the chances of odd would be 3/6 so 3/6*3/6 would be half of each dice. so 50% i believe
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3 years ago
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