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TEA [102]
2 years ago
5

I need help please...

Mathematics
2 answers:
vesna_86 [32]2 years ago
7 0

Answer:

(21.89 - 20)/ 21.89 × 100%

Step-by-step explanation:

See above

Semenov [28]2 years ago
6 0

Answer:

i believe the answer is 1.8% tax

Step-by-step explanation:

hope this helps <3

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Need help! Law of cosines...find b round to the nearest tenth please
dusya [7]
ANSWER

B = 27.8 \degree

EXPLANATION

The law of cosine is given by the formula:

{b}^{2} = {a}^{2} + {c}^{2} - 2bc \cos(B)

From the diagram,

a=17, b=8, c=16

We substitute the given values into the formula to obtain:

{8}^{2} = {17}^{2} + {16}^{2} - 2(17)(16)\cos(B)

64 = 289+ 256- 544\cos(B)


64 = 545- 544\cos(B)


64 - 545 = - 544\cos(B)

- 481 = - 544\cos(B)

\frac{ - 481}{ - 544} = \cos(B)

cos(B) = 0.88419

B = \cos ^{ - 1} (0.88419)

B = 27.8 \degree
3 0
3 years ago
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Whats the domain? someone pleaseee
ziro4ka [17]
-infinity, positive infinity
8 0
3 years ago
Three times a number plus twice another is 10, while their sum is 10, Find the numbers
Aleks [24]
3a+2b=10 \\\\ a+b=10 \\\\ \boxed{a=10-b} \\\\ 3(10-b)+2b=10 \\\\ 30-3b+b=10 \\\\ -b=10-30 \\\\ -b=-20 \\\\ \boxed{b=20} \\\\ a=10-20 \\\\ \boxed{a=-10}
5 0
3 years ago
Please help!!!<br> A. 21890/990<br> B.21539/9990<br> C.215605/1010<br> D. 215605/1000
ollegr [7]

Answer:

The answer I got was D 215605/1000

5 0
3 years ago
LM is a perpendicular bisector of NP The length of LN is 12w +7, and the length of LP is 15w 5. What is the length of LN?
Mazyrski [523]

Answer:

LN = 55

Step-by-step explanation:

Given

LN = 12w + 7

LP = 15w - 5

Required

Determine LN

Since LM is a bisector, then we have:

LP = LN (See attachment for illustration)

15w - 5 = 12w + 7

Collect Like Terms

15w - 12w = 5 +7

3w = 12

Solve for w

w = 12/3

w = 4

LN is calculated as thus:

LN = 12w + 7

Substitute 4 for w

LN = 12 * 4 + 7

LN = 48 + 7

LN = 55

8 0
3 years ago
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