Help me please. I really need it, explain to me how it is done too, I’d really really appreciate that.

Mathematics

1 answer:

DanielleElmas [232]3 years ago

3 0

All angles in a triangle add up to 180 so 180 - 60 = 120 then 180 - 155 = 25 then 25+65 = 90 that is the remaining angle but finally 180 - 90 = 90 is the missing angle

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What is a equivalent fraction for 24/30

liq [111]

There's an infinite number of equivalent fractions for 24/30 - all you need to do is to divide or multiple both numerator and denominator by the same number. For example:

24/30 = 48/60 (because 24 * 2 = 48 and 30 * 2 = 60)
24/30 = 12/15 (because 24 ÷ 2 = 12 and 30 ÷ 2 = 15)
24/30 = 72/90 (because 24 * 3 = 72 and 30 * 3 = 90)
24/30 = 4/5 (because 24 ÷ 6 = 4 and 30 ÷ 6 = 5)
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3 years ago

7x-7+35-34p+(45x-2p)+6^4

ss7ja [257]

Answer:

=−36p+52x+1324

Step-by-step explanation:

7x−7+35−34p+45x−2p+64

=7x+−7+35+−34p+45x+−2p+1296

Combine Like Terms:

=7x+−7+35+−34p+45x+−2p+1296

=(−34p+−2p)+(7x+45x)+(−7+35+1296)

=−36p+52x+1324

6 0

3 years ago

Read 2 more answers

Equal measure? Need help with the questions? Question are at the top in the pic ?

leva [86]

Answer:

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3 years ago

xP(x)00.2510.0520.1530.55Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal pl

Nookie1986 [14]

The Solution:

Given:

Required:

Find the standard deviation of the probability distribution.

Step 1:

Find the expected value of the probability distribution.

$E(x)=\mu=\sum_{i\mathop{=}0}^3x_iP_(x_i)$ $\begin{gathered} \mu=(0\times0.25)+(1\times0.05)+(2\times0.15)+(3\times0.55) \\ \\ \mu=0+0.05+0.30+1.65=2.0 \end{gathered}$

Step 2:

Find the standard deviation.

$Standard\text{ Deviation}=\sqrt{\sum_{i\mathop{=}0}^3(x_i-\mu)^2P_(x_i)}$ $=(0-2)^2(0.25)+(1-2)^2(0.05)+(2-2)^2(0.15)+(3-2)^2(0.55)$ $=4(0.25)+1(0.05)+0(0.15)+1(0.55)$ $=1+0.05+0+0.55=1.60$

Thus, the standard deviation is 1.60

Answer:

1.60