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3 years ago

X + 2x + 3 + 4 = 5x +7 +6x + 8

Mathematics

1 answer:

Greeley [361]3 years ago

6 0

Answer:

x = -1

Step-by-step explanation:

combine like terms on both sides (like terms refers to the variable, x in this case) so

3x + 7 = 11x + 15

then get x terms to one side and non-x terms to the other

this gives you: 7 - 15 = 11x - 3x

-8 = 8x

dived both sides by 8 (since its the constant with x) which gives you

x = -1

hope I could help ( I messed up at first but I fixed it)

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A student’s score on an exam is an integer between 0 and 100. A score of 90 to 100 is an A, 80 to 89 is a B, 70 to 79 is a C, 60

elixir [45]

Answer:

A. 0.22

B. 0.18

C. 0.25

D. 0.244

Step-by-step explanation:

S = {51 to 100} = 50

The sample space S contains values from 51 to 100 which is a total of 50 different values.

Probability of A (lies between the values of 90 to 100 = 11).

11/50 = 0.22

For a student to fail the course, his course has to be less than 60 = from 51 to 59. A total of 9 values.

9/50 = 0.18

For student to get c, (70 to 79) a total of 10 values: 10/50 = 0.20

P(student did not get C) = 1-0.20 = 0.80

To get B, ( 80 to 89)

10/50 = 0.20

Probability that a student who is known not to have a c grade has a b grade = 0.20/0.80 = 0.25

Probability of passing lies between 60 to 100 = 41 scores

41/50 = 0.82

Probability of student who passed having a B = 0.20/0.82 = 0.244

4 0

3 years ago

Josiah invests $360 into an account that accrues 3% interest annually. Assuming no deposits or withdrawals are made, which equat

vlabodo [156]

Answer:

y = 360(1.03)x

Step-by-step explanation:

$F = P x (1 + i)^n$

F is the future worth, P is the present worth, I will be the interest rate, and n is the number of years. $F = ($360)(1.03)^x$

The principal amount of the money = $360

Annual rate of interest = 3%

Thus, the amount after x years which is increased by 3%.

Since, this amount represented by y,

The required equation that represents the amount of money in Josiah’s account, y, after x years is, $= 360(1+\frac{3}{100} )^x\\ = 360(1+0.03 )^x\\ = 360(1.03 )^x$

This amount represented by y,

Therefore, the required equation that represents the amount of money in Josiah’s account, y, after x years is,

$y = 360(1.03 )^x$

Hope this helps you!

Have a nice evening! ;)

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3 years ago

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If y varies directly with x, and y is 14 when x is 2, what is the value of x when y is 35?

Ainat [17]

Im pretty sure it's 17.5 since 35 is odd.

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3 years ago

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Ribbon A is 1/3 meters long. It is 2/5 meters shorter than ribbon b. What's the total length of 2 ribbons?

Pavel [41]

1/3+2/5=5/15+10/15
answer is 1

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3 years ago

The number 0.8 can be written as 8/9, so it is a irrational number true or false

lesya692 [45]

False//////////////////////////////////////////////////////////////////////////

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3 years ago