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miv72 [106K]
4 years ago
7

5. Suppose your instructor assigns grade for the course based on your performance as

Mathematics
1 answer:
Scilla [17]4 years ago
4 0

Answer:

82.1

Step-by-step explanation:

Multiply each grade by its weighted percentage, then add up the results.

\left[\begin{array}{ccc}x&P(x)&xP(x)\\75&0.24&18\\85&0.16&13.6\\90&0.25&22.5\\80&0.35&28\\&Sum&82.1\end{array}\right]

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I am a 2 digit number the sum of my digits is 12. the ones digit is twice the tens digit? who am i?
Bas_tet [7]

Answer:

84

Step-by-step explanation:

let a be the 1's digit and b the 10's digit, then

a = 2b ← twice the 10's digit, thus

sum = 2b + b = 12, that is

3b = 12 ( divide both sides by 3 )

b = 4

and a = 2b = 2 × 4 = 8

The 2 digit number is 84

5 0
4 years ago
If two or more polygons are congruent, which statement must be true about the polygons? Read all of the choices before deciding.
Lisa [10]
Pairs of corresponding angles have the same measure.
3 0
4 years ago
Steve received three payments for a total of $45 how much was each payment
defon

Answer:

$15

Step-by-step explanation:

Assuming all the payments are the same, simply divide the total with the amount of payments:

45/3 = 15

$15 each payment.

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5 0
4 years ago
Read 2 more answers
When the expression x2-3x-18 is factored completely,which is one of its factors?
lesya692 [45]

Answer:

(x+3) and (x-6) are factors

Step-by-step explanation:

The given expression is :

x²-3x-18

We need to find the factors of the above expression.

We can solve it using middle term splitting. We find two integers such that there product is -18 and sum is -3. These two numbers can be -6 and 3.

x²-3x-18 = x²-6x+3x-18

= x(x-6)+3(x-6)  [taking common terms]

= (x+3) (x-6)

Hence, the factors of the above expression is (x+3) and (x-6).

4 0
3 years ago
Which input value produces the same output value for the two functions
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X= -6

Please mark brainliest
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