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Deffense [45]
2 years ago
14

(8x-17)(5x+19) Find the converse and x

Mathematics
1 answer:
pychu [463]2 years ago
4 0

(8x-17)(5x+19)\\40x^{2}+152x-85x-323\\ 40x^{2}+67x-323

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Simplify and solve each equation for the x
SpyIntel [72]

Answer:

x = 2

Step-by-step explanation:

2(2x+1-x)=6

2(x+1)=6               add common factors

2x+2=6                distribute the 2

2x=4                     subrtract 2 on both sides

x=2                        divide 2 on both sides

8 0
3 years ago
Use the laws of Sines and law of cosines to find missing dimensions​
Andrei [34K]

Answer:

A) ERROR

B) ∠C = 26°

Step-by-step explanation:

Houston, We have a problem!!! too much information

If we had a legit triangle, the law of sines would hold

19/sin138 = 8/sin20

  28.395 = 23.390

as this is NOT an equality, the triangle does not exist as described.

IF it did, we'd get different results depending on which set we used

∠F = 180 - 138 - 20 = 22°

Law of sines

19/sin138 = DE/sin22 ⇒ DE = 19sin22/sin138 = <u>10.63697...</u>

or

8/sin20 =  DE/sin22 ⇒ DE = 8sin22/sin20 = <u>8.762211...</u>

If we attempt to use Law of cosines

DE² = 19² + 8² - 2(19)(8)cos22 = <u>11.9639...</u>

so really none is correct because we attempt to use trig calculations to a non-triangle.

12) AC² = 15² + 19² - 2(15)(19)cos120

      AC = 29.51270...

29.51270 / sin120 = 15/sinC

C = arcsin(15sin120/29.51270) = 26.1142... <u>26°</u>

6 0
3 years ago
Read 2 more answers
124.4 divided by 4, idk they want more characters even tho it’s REALLY SIMPLE
klio [65]

Answer:

31.1

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Name numbers that’s round to 140,000 or 240,000 when rounded to the nearest ten thousand
andriy [413]

Answer:

150,000, 130,000

Step-by-step explanation:

well, 4 or below go down 5 and above go up so go from there

5 0
2 years ago
The price of an item has been reduced by 85%. The original price was $37.
Tema [17]

Answer:  <em>Multiply the original price by the decimal form of the percent and subtract that from the original price. </em>

<em>37*0.85=31.45 </em>

<em>37-31.45=5.55 </em>

<u><em>Answer: New price is $5.55</em></u>

7 0
2 years ago
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