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3 years ago

8x-5 = 9+7x What is the solution please show work if you can

Mathematics

2 answers:

yanalaym [24]3 years ago

5 0

Step-by-step explanation:

8x-5=9+7x

8x-7x=9+5

x=14

never [62]3 years ago

5 0

Answer:

8x-5 = 9+7x

8x-7x =9+5

x = 14

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Paha777 [63]

Answer:

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2 years ago

Wich are factors of 31

disa [49]

1 and 31

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3 years ago

Read 2 more answers

An urn contains 17 white balls and 18 red balls. A sample of four balls is selected at random from the urn. What is the probabil

erik [133]

Answer:

c. 0.3974

Step-by-step explanation:

Given;

number of white balls, W = 17

number of red balls, R = 18

Total number of balls, T = 35

The number of ways the event will occur is given by

= P(2 whites) and P(2 reds)

= P(2whites) x P(2 reds)

= 17C2 x 18C2

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= 20,808

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= 35C4

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The correct option is "C"

6 0

3 years ago

Determine the number of real solutions of -2x2 + 5x - 3 = 0.

andrew11 [14]

-2x^2 + 5x -3 =0

Find the discriminate:

In the given formula a = -2, b = 5 and c = -3

The discriminate is found using the formula b^2 - 4(ac)

Replace the letters with their values:

5^2 - 4(-2*-3)

25 - 4*6

25-24 = 1

When the discriminate is greater than or equal to 0, there are two real solutions.

The answer is c) 2

4 0

3 years ago

The table shows the relationship between the number of Calories Lucie burns while jumping rope and the number of minutes she jum

iragen [17]

Answer:

The amount of calories Lucie will burn by jumping for 1 minute is 8 calories

Step-by-step explanation:

The given data values are;

Minutes ${}$ Calories Burned

40 ${}$ 320

80 ${}$ 640

120 ${}$ 960

160 ${}$ 1280

The value of calories burnt and the number of minutes of jump robe are seen to be directly proportional, such that we have;

40 minutes of jump rope will yield 320 calories burnt

Therefore we have;

1 minute of jump rope will yield 320/40 = 8 calories burnt

The amount of calories Lucie will burn by jumping for 1 minute = 8 calories.

8 0

3 years ago