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Mrrafil [7]
3 years ago
15

HELP ME SOLVE THUS PLEASE! 50 POINTS WILL BE REWARDED!!!!

Mathematics
2 answers:
german3 years ago
6 0

\huge \boxed{\mathbb{QUESTION} \downarrow}

\tt\frac { 2 ( x - 1 ) } { 4 } = \frac { 2 ( x + 8 ) } { 13 } \\

\large \boxed{\mathbb{ANSWER\: WITH\: EXPLANATION} \downarrow}

\tt\frac { 2 ( x - 1 ) } { 4 } = \frac { 2 ( x + 8 ) } { 13 } \\

Cross multiply the equations on both sides.

\tt13\times 2\left(x-1\right)=4\times 2\left(x+8\right)

Multiply 13 and 2 to get 26.

\tt26\left(x-1\right)=4\times 2\left(x+8\right)

Use the distributive property to multiply 26 by x-1.

\tt26x-26=4\times 2\left(x+8\right)

Multiply 4 and 2 to get 8.

\tt \: 26x-26=8\left(x+8\right)

Use the distributive property to multiply 8 by x+8.

\tt \: 26x-26=8x+64

Subtract 8x from both sides.

\tt \: 26x-26-8x=64

Combine 26x and -8x to get 18x.

\tt \: 18x-26=64

Add 26 to both sides.

\tt \: 18x=64+26

Add 64 and 26 to get 90.

\tt \: 18x=90

Divide both sides by 18.

\tt \: x=\frac{90}{18}  \\

Divide 90 by 18 to get 5.

\boxed{ \boxed{ \bf \: x=5 }}

dsp733 years ago
3 0

Answer:

x=5

Step-by-step explanation:

2(x−1)/4=2(x+8)/13

Step 1: Cross-multiply:

2(x−1)*(13)=2(x+8)*(4)

26x−26=8x+64

Step 2: Subtract 8x from both sides.

26x−26−8x=8x+64−8x

18x−26=64

Step 3: Add 26 to both sides.

18x−26+26=64+26

18x=90

Step 4: Divide both sides by 18.

18x/18= 90/18

x=5

~Hope this helps~

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<h3>What is probability?</h3>

The chances of an event occurring are defined by probability. Probability has several uses in games, in business to create probability-based forecasts,

Given data;

Total no of students =  115

The total number of ways to elect a president = 115

If one person is elected as the president the total number of ways to elect a president  = 114

The different ways that the students can elect a president and a vice president are found as;

⇒ 115 ways × 114 ways

⇒ 13110 ways

Hence the different ways that the students can elect a president and a vice president will be 13110.

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brainly.com/question/11234923

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2 years ago
The ball followed a path modelled by the equation h = −0.001! + 0.5 + 2.5 where h is the height of the ball in feet and is the h
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The heights the balls hit a fence at 350 ft distance are 65 feet, 38 feet and 30 feet, respectively

<h3>Represent the distance-height relationship for each player’s ball as an equation, in a table and on a graph. </h3>

<u>Juan</u>

Juan's equation is given as:

h = -0.001d^2 + 0.5d + 2.5

h =

Set d to multiples of 50 from 0 to 400.

So, the table of values of Juan's function is:

d (ft)                   h(ft)

0                          2.5

50                        25

100                      42.5

150                        55

200                      62.5

250                        65

300                      62.5

350                        65

400                      42.5

See attachment for the graph of Juan's function

<u>Mark</u>

A quadratic function is represented as:

h = ad^2 + bd + c

Using the values on the table of values, we have:

c = 3 -- the constant value

So, the equation becomes

h = ad^2 + bd + 3

Using the two other values on the table of values, we have:

23 = a(50)^2 + b(50) + 3

38 = a(100)^2 + b(100) + 3

Using a graphing tool, we have:

a = -0.001

b = 0.45

So, Mark's equation is h(d) = -0.001d^2 + 0.45d + 3

See attachment for Mark's graph.

<u>Barry</u>

From the graph, we have the table of values of Barry's function to be:

d (ft)                   h(ft)

0                          2.5

50                        21

100                      35

150                       44

200                      48

250                       46

300                      41

350                       30

400                      14

450                      0

Using a graphing tool, we have the quadratic function to be:

y = -0.001x^2 +0.4x +2.5

<h3><u>The shortest and the greatest distance before hitting the ground</u></h3>

From the graphs, equations and tables, the distance travelled by the balls are:

Juan = 505 feet

Mark = 457 feet

Barry = 450 feet

This means that Juan's ball would travel the greatest distance while Barry's ball would travel the shortest.

<h3>The height the balls hit a fence at 350 ft distance</h3>

To do this, we set d = 350

From the graphs, equations and tables, the height at 350 ft by the balls are:

Juan = 65 feet

Mark = 38 feet

Barry = 30 feet

The above represents the height the balls hit the fence

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Answer:

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Step-by-step explanation:

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