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3 years ago

Juan made an 80% on his chemistry test. If there were 20 questions, how many questions did Juan get correct?

Mathematics

1 answer:

andrew11 [14]3 years ago

4 0

Answer:16 good questions

Step-by-step explanation:

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For which values of P and Q does the following equation have infinitely many solutions ?

solmaris [256]

Answer:

(P, Q) = (-75, 57)

Step-by-step explanation:

The equation will have infinitely many solutions when it is a tautology.

Subtract the right side from the equation:

Px +57 -(-75x +Q) = 0

x(P+75) +(57 -Q) = 0

This will be a tautology (0=0) when ...

P+75 = 0

P = -75

and

57-Q = 0

57 = Q

_____

These values in the original equation make it ...

-75x +57 = -75x +57 . . . . . a tautology, always true

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3 years ago

Select the better deal in the pair. Then give the unit rate for the better deal.

choli [55]

Answer:

Brand 2 is the better deal

Step-by-step explanation:

4 0

3 years ago

Complete the table using the equation y = 9x + 8.

Volgvan

Answer:

$Y = ( -1) | 8 | 17 | 26 | 35|$

Step-by-step explanation:

$y = 9x + 8 \\ \\ \\ x = ( - 1) \\ y = 9( - 1) + 8 \\ y = - 9 + 8 = - 1 \\ \\ x = 0 \\ y = 9(0) + 8 \\ y = 0 + 8 = 8 \\ \\ x = 1 \\ y = 9(1) + 8 \\ y = 9 + 8 = 17 \\ \\ x = 2 \\ y = 9(2) + 8 \\ y = 18 + 8 = 26 \\ \\ x = 3 \\ y = 9(3) + 8 \\ y = 27 + 8 = 35 \\ \\ \\ Y = ( - 1) | 8 | 17 | 26 | 35|$

7 0

3 years ago

Need help quick. Find the measure of x in each figure

IgorLugansk [536]

Step-by-step explanation:

x = 20

plz mark my answer as brainlist plzzzz.

hope this will be helpful to you .

7 0

3 years ago

An engineer's compensation package includes the total cost of a $175-per-month health insurance plan, the total cost of a $55-pe

never [62]

55000+175(12)+55(12)
55000+2100+6607
57760

The answer is A.

3 0

3 years ago