3 years ago

. 15 pens at $. 79 each 13 erasers at $.29 each.

1 answer:

3 0

Answer:

15.62

Step-by-step explanation:

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brilliants [131]

The answer is 3 because since b=-5 you get -5 and add it to 14 giving you 9 and then you divide 9/3 which gives you 3. Hope this helps :)

8 0

3 years ago

Whitepunk [10]

1. -tanx = cotx
2. -sinx / cosx = cosx / sinx
3. -sin2x = cos2x
4. -sinx = cosx
5. cosx+sinx

Answer is A

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3 years ago

Alisiya [41]

7 × 105 = 735
2 × 103 = 206
735 + 206 = 941

Your answer is 941.

Hope this helps!

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3 years ago

inessss [21]

10.55h is greater than or equal to 393.40

5 0

3 years ago

Gre4nikov [31]

Answer:

Step-by-step explanation:

Let M be the heights of men in the United States and W be the heights of women in the United States

Given that M is N(69.1, 2.9) and W (63.7, 2.7)

For a husband and wife we have average height as

$\frac{x+y}{2}$ =Z (say)

$Mean =E(z) = \frac{1}{2} [E(M)+E(W)] = 66.4 inches$

Var (Z) = $Var (\frac{x+y}{2} )=\frac{1}{4}[Var(x)+ Var(y)+2 cov (x,y)]\\$

= $0.25[2.9^2+2.7^2+2*r*sx*sy]\\= 0.25(20.398)\\=5.0995$

Mean = 66.4" and std dev = 2.258

7 0

2 years ago

. 15 pens at $. 79 each 13 erasers at $.29 each.​