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Ivan
2 years ago
5

If BD bisects ABC, m DBC =79 and ABC = (9x-4) find the value of x

Mathematics
1 answer:
zimovet [89]2 years ago
3 0

Answer:

x=18

Step-by-step explanation:

set up the equation:

DBC+DBC=ABC

79+79=(9x-4)

Simplify both sides of the equation.

79+79=9x−4

79+79=9x+−4

(79+79)=9x−4(Combine Like Terms)

158=9x−4

158=9x−4

Flip the equation.

9x−4=158

Add 4 to both sides.

9x−4+4=158+4

9x=162

Divide both sides by 9.

9x /9  =  162 /9

x=18

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Rashid [163]

mike charges 100 dollars service charge plus 65 dollars per hour.  

amy charges 40 dollars service charge plus 80 dollars per hour.  

the cost to repair from mike is 100 + 65 * x.  

the cost to repair from amy is 40 + 80 * x.  

let x = 3 and you get:  

the cost to repair from mike is 100 + 65 * 3 = 295 dollars.  

the cost to repaid from amy is 40 + 80 * 3 = 280 dollars.  

as long as the time to repair is 3 hours or less, the cost to repair will be cheaper from amy.

4 0
2 years ago
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Triss [41]
The answer is -4, hope this helped
8 0
3 years ago
Aaron bought a set of plastic ice cubes with a mixture of water and air inside.
SVETLANKA909090 [29]

Answer:

The volume of water and air inside each of the plastic ice cubes is 3000mm³

Step-by-step explanation:

This problem bothers on the mensuration of solid shapes, rectangular pyramid.

The volume of a rectangular pyramid is expressed as

V=(l*w*h)/3

Given data

Length l = 20mm

Width w= 15mm

Height h= 30mm

Substituting our given data we have

V= 20*15*30/3

V= 9000/3

V= 3000mm³

5 0
2 years ago
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I need help with this question
goldenfox [79]
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3 0
2 years ago
Mookie Betts of the Boston Red Sox had the highest batting average for the 2018 Major League Baseball season. His average was 0.
Annette [7]

Answer:

Binomial probability, with n = 5, p = 0.352

Step-by-step explanation:

For each time Mookie Betts went to bat, there were only two possible outcomes. Either he got a base-hit, or he did not. The probability of getting a hit on each at-bat is independent of any other at-bat. This means that we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

His average was 0.352.

This means that p = 0.352

Assume he has five times at bat tonight in the Red Sox-Yankees game.

This means that n = 5

a. This is an example of what type of probability

Binomial probability, with n = 5, p = 0.352

8 0
3 years ago
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