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balandron [24]
3 years ago
8

Nigel wants to average 85% on his four tests. He got 77%, 89%, 78% on his first three tests. What does he need to get on his las

t test to average 85%?
Mathematics
1 answer:
Arte-miy333 [17]3 years ago
4 0

Answer:

He needs to get 96%

Step-by-step explanation:

Add 96 89 77 and 78 together and divide by 4, it should be 85

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Harris Teeter is selling gala apples for 0.98 per pound Adam purchase 3.5 pounds of the apples how much did she pay for her purc
Schach [20]
Total purchase = (unit cost)(# of pounds purchased)

Here, that total is ($0.98/lb)(3.5 lb) = $3.43 (answer)
8 0
2 years ago
How does this polynomial identity work on numerical relationships?<br> (y + x) (ax + b)
Serggg [28]

Let us take 'a' in the place of 'y' so the equation becomes

(y+x) (ax+b)

Step-by-step explanation:

<u>Step 1:</u>

(a + x) (ax + b)

<u>Step 2: Proof</u>

Checking polynomial identity.

(ax+b )(x+a) = FOIL

(ax+b)(x+a)

ax^2+a^2x is the First Term in the FOIL

ax^2 + a^2x + bx + ab

(ax+b)(x+a)+bx+ab is the Second Term in the FOIL

Add both expressions together from First and Second Term  

= ax^2 + a^2x + bx + ab

<u>Step 3: Proof </u>

(ax+b)(x+a) = ax^2 + a^2x + bx + ab

Identity is Found .

Trying with numbers now

(ax+b)(x+a) = ax^2 + a^2x + bx + ab

((2*5)+8)(5+2) =(2*5^2)+(2^2*5)+(8*5)+(2*8)

((10)+8)(7) =(2*25)+(4*5)+(40)+(16)

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126 =126

3 0
3 years ago
2 1/2 +2/3 <br> Thank you!
MArishka [77]

Answer:

3 1/6

Step-by-step explanation:

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6 0
3 years ago
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kotykmax [81]

Answer:

C: The average of the data is a closer to the least value than it is to the greatest value

3 0
2 years ago
How do you classify the following polynomial?<br> -4x³ + 2x² - 5x+3x²
sammy [17]

Answer:

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combine like terms

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common factors

-1(4x³-5x²+5x)

find one factors

Ans: -x (4x²-5x+5)

5 0
2 years ago
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