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4 years ago

11 + (-20) and (-20) + 11 A. Equal B. Not equal

Mathematics

2 answers:

tatiyna4 years ago

7 0

11 plus -20 equals -9. -20 plus 11 equals -9. so it is equal

ArbitrLikvidat [17]4 years ago

5 0

11-20=-20+11
-9=-9
Yes they are equal

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Jayanta is raising money for the? homeless, and discovers each church group requires 2 hr of letter writing and 1 hr of? follow-

boyakko [2]

Answer:

Jayanta needs 2 labor union groups and 8 church groups.

Step-by-step explanation:

Let c denotes churches .

Let l denotes labor unions.

We know that Jayanta can only spend 20 hours letter writing and 14 hour of follow-up.

So, equations becomes:

$2c+2l=20$

$c+3l=14$

And total money raised can be shown by = $150c+175l$

We have to maximize $150c+175l$ keeping in mind that $2c+2l \leq 20$ and $c+3l \leq 14$

We will solve the two equations: $2c+2l=20$ and $c+3l=14$

We get l = 2 and c = 8

And total money raised is $150\times8 + 175\times2$ = $1200+350=1550$ dollars.

Hence, Jayanta needs 2 labor union groups and 8 church groups.

8 0

3 years ago

A spinner is divided into six equal-sized sectors labeled 1 through 6. Dwayne spins this spinner 12 times. Let X

slavikrds [6]

Answer:

b) μ = 2 and σ = 1.29

Step-by-step explanation:

Step(i):-

Given that the A spinner is divided into six equal-sized sectors labelled 1 through 6

Given that the probability of labelled '1'

$p = \frac{1}{6}$ =0.16

q = 1-p = 1- 0.16 = 0.84

Let 'X' be a random variable in binomial distribution

The mean of the binomial distribution

μ = n p

μ = $12 (\frac{1}{6} ) = 2$

The mean of the binomial distribution = 2

Step(ii):-

The standard deviation of X

σ $= \sqrt{npq}$

σ = $\sqrt{12(0.16)(0.84}$

σ = $1.269$

The standard deviation of the binomial distribution

σ = $1.269$

6 0

3 years ago

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Jessie says to round 763,400 to the nearest ten thousand, he will round to 770,000. is he right? Explain

bogdanovich [222]

763,400 rounded to the nearest ten thousand = 760,000....Jessie is wrong

4 0

3 years ago

Read 2 more answers

Sin^2(alpha) + cos^2(alpha)=? Fast plz sir is asking me rn lol

Crazy boy [7]

Answer:

the answer is 1

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4 years ago

Elsa has a piggy bank in her bedroom she uses to collect coins. She started by

Tomtit [17]

*knock knock knock knock knock*

"dO yOu WaNnA bUiLd a SnOwMaAaAaAaN!!!!!!!!!!"

Anyways

Answer:

The Dad will've given her $49 after 140 days so

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3 years ago