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3 years ago

If Anna's test grades are 66, 90, and 99, what is her test average?

Mathematics

2 answers:

marysya [2.9K]3 years ago

4 0

Answer:

90 because it is the mean

skad [1K]3 years ago

4 0

Answer: it’s 83%

Step-by-step explanation: you add them up and divide by 3

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Hi I need help pls<br> Due in 10 mins

vichka [17]

Step-by-step explanation:

I'm sorry

i dont know this particular question

4 0

3 years ago

Two stores sell the same television for the same original price. Store A advertises that the television is on sale for 30% off t

user100 [1]

The answer is 0.7p=p-250

7 0

3 years ago

Given that f(x) = x2 + 5x + 6 and g(x) = x + 2, find (fºg)(x) and

PolarNik [594]

Answer:

$(f\circ g)(x)=x^2+9x+20$

Step-by-step explanation:

We have the two functions:

$f(x)=x^2+5x+6\text{ and } g(x)=x+2$

And we want to find:

$(f\circ g)(x)$

This is equivalent to:

$(f\circ g)(x)=f(g(x))$

Therefore, we will have:

$f(x+2)$

By substitution:

$f(x+2)=(x+2)^2+5(x+2)+6$

Simplify. Square and distribute:

$f(x+2)=(x^2+4x+4)+(5x+10)+6$

Rearrange:

$f(x+2)=(x^2)+(4x+5x)+(4+10+6)$

Combine like terms:

$f(x+2)=(f\circ g)(x)=x^2+9x+20$

7 0

3 years ago

We roll a pair dice 10,000 times. Estimate the probability that the number of times we get snake eyes (two ones) is between 280

Natali5045456 [20]

Answer:

0.3573 = 35.7%

Step-by-step explanation:

We roll a pair of dice 10,000 times so the mean and standard deviation is,

μ = 10000/36 =277.7 σ = $\sqrt{10000*\frac{35}{36^{2} } } =16.4$

$z_{1}$ = (280 - 277.7)/16.4 = .14

$z_{2}$ = (300 - 277.7)/16.4 = 1.35

Probablity (range)

0.3573

Z(low)=0.14 0.555766357

Z(upper)=1.36 0.91304644

6 0

3 years ago

Vesna [10]

2258 latex gloves
784 gloves remain
How many were used means we have to subtract

2258 - 784 = 1474
1474 gloves were used

3 0

3 years ago