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muminat
2 years ago
6

Please i need help ! its due today ! Class A has 10 pupils and class B has 17 pupils.

Mathematics
1 answer:
Rudiy272 years ago
6 0

Answer:

The mean score is 87

Step-by-step explanation:

79x2=158

158-71=87

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24 ounces of instant tea at 30 milligrams of caffeine per 8 ounces and 12 ounces of green tea at 15 milligrams of caffeine per 8
OleMash [197]

Answer:

3.125 mg/ oz

Step-by-step explanation:

Amount of instant tea = 24 ounces

Amount of green tea = 12 ounces

Caffeine in instant tea = 24/8*30= 90 mg/oz

Also, caffeine in green tea = 12/8*15 =22.5 mg/oz.

Total amount of mixture= 24+12= 36 ounce

Total amount of caffeine in the mixture = 90+22.5 = 112.5 mg/oz

Caffeine per ounce in the final mixture = 112.5 / 36 = 3.125 mg/ oz

8 0
3 years ago
Read 2 more answers
Sue has 156 marbles. She lost 24 marbles. How many marbles does Sue have now?​
padilas [110]

Answer 132

Step-by-step explanation:

First, you subtract two one hundred fifty six, minus , twenty four, then you place it in place order.

3 0
4 years ago
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( PLEASE HURRY, WILL GIVE BRAINLIEST IF CORRECT )
VLD [36.1K]

Answer:

o D. (x, y) → (-x, y)

Step-by-step explanation:

Because x-values are reflected across the y-axis and y-values remain same.

8 0
3 years ago
Fill out First row is standard form <br><br> Second row is Factored Form already done for you.
DerKrebs [107]

Answer:

(x + 6)(x - 2) = x² + 4x - 12

(x + 2)(x - 8) = x² - 6x - 16

(x + 6)(x - 6) = x² - 36

(x - 5)(x - 1) = x² - 6x + 5

(x - 4)(x - 10) = x² - 14x + 40

(x + 2)(x + 5) = x² + 7x + 10

Step-by-step explanation:

Use FOIL.

(x + 6)(x - 2) =

F - first: x × x = x²

O - outer: -2 × x = -2x

I - inner: 6 × x = 6x

L - last: 6 × -2 = -12

(x + 6)(x - 2) = x² - 2x + 6x - 12

Now, combine like terms.

(x + 6)(x - 2) = x² + 4x - 12

(x + 2)(x - 8) = x² - 6x - 16

(x + 6)(x - 6) = x² - 36

(x - 5)(x - 1) = x² - 6x + 5

(x - 4)(x - 10) = x² - 14x + 40

(x + 2)(x + 5) = x² + 7x + 10

5 0
2 years ago
WILL GIVE BRAINEST <br>if f(x)=2x-5 and g(x)=x2.....
Ymorist [56]
Note that the notation (f+g)(x) is just another way of writing f(x)+g(x). Here, we're simply taking the expression for f(x) and adding the expression for g(x) to it. Together, we have:

f(x)=2x-5\\g(x)=x^2-4x-8

Which means that

(f+g)(x)=f(x)+g(x)=(2x-5)+(x^2-4x-8)

And from there, it's just a matter of combining like terms to simplify.
4 0
3 years ago
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