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3 years ago

Need help this is so confusing and please show work.

Mathematics

1 answer:

AlexFokin [52]3 years ago

6 0

Answer:

Please see attached picture for full solution.

Step-by-step explanation:

You should multiply the number outside the bracket with each term, with their symbols (plus/minus), in the bracket.

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A scale reports a 15-pound weight as weighing 12.375 pounds.

Kruka [31]

B. Accuracy is if it's right or not. Precision is how many decimal places it goes out to. So it is precise but not accurate.

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3 years ago

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Plz help will mark brainliest if correct

slamgirl [31]

Answer:

In order by appearance

1. rational

2. irrational

3. rational

4. rational

5. irritatinal

6. rational

7. irritational

Step-by-step explanation:

1) 99/264

2) 8√5

3) 7.12

4) 6

5) pi is not a rational number

6) fractions are rational

7) 1/2·(√6-1)

Rational numbers are numbers that can be shown as a ratio or a fraction and irrational numbers are the opposite of that

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Find the median of the data in the box plot below.

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Answer:

Median = 6.5 or 6 1/2

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3 years ago

Which graph represents a function

tino4ka555 [31]

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3 years ago

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In ΔXYZ, ∠Y=90° and ∠X=73°. ∠ZWY=80° and XW=80. Find the length of ZY to the nearest 100th.

lawyer [7]

Answer:

Solution given:

Y=90°

∠X=73°.

∠ZWY=80°

and XW=80.

ZY=?

We know that

In right angled triangle ∆ XYZ

Tan 73= $\frac{p}{h}$

3.27= $\frac{yz}{xy}$

3.27×[xy]=yz

xw+wy= $\frac{yz}{3.27}$

wy= $\frac{yz}{3.27}$ -80...........(1)

again

In right angled triangle WYZ

Tan 80= $\frac{yz}{wy}$

5.67×wy=yz

wy= $\frac{yz}{5.67}$

yz=5.67×wy............................................(2)

Equating equation 1&2

$\frac{yz}{5.67}$ = $\frac{yz}{3.27}$ -80

$\frac{yz}{3.27}$ - $\frac{yz}{5.67}$ =80

5.67yz-3.27yz=80*5.67*3.27

2.4yz =1483.272

yz= $\frac{1483.272}{2.4}$

yz=618.03

:.y=618.03unit.the length of ZY to the nearest 100th is 618.

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3 years ago