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stich3 [128]
3 years ago
5

I Don't know how to do this, please help me!! :( number 19

Mathematics
2 answers:
notka56 [123]3 years ago
7 0
All angles of a triangles equal to 180, 180 degrees minus 28 and 103= the missing angle, 49!
Vikentia [17]3 years ago
6 0

Answer:

Step-by-step explanation:

#19. m∠JML = 126°

#20. P_{JKLM} = 50 units

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PLZ Help fast. It's Pre Calculus. This is the only day i get to spend time with my baby sister. please help fast. WILL MARK BRAI
Ivahew [28]
1) x³ + 2x² - x - 2                            2) 2x³ + 5x² - 8x - 20 = 0

x²(x + 2) - (x + 2)                                x²(2x + 5) - 4(2x + 5) = 0

(x + 2)(x² - 1)                                      (2x + 5)(x² - 4) = 0

(x + 2)(x - 1)(x + 1)                             x = -5/2, +-2

x = -2, 1, -1   << a is the answer.

hope that helps, God bless!
5 0
3 years ago
Read 2 more answers
2/5da80% como ahora la cuenta
andreev551 [17]
I don't speak Spanish but I think that this is what you meant:
80 * 2/5 = 32
so 2/5 of 80 % is 32 % (80/5 * 2)
4 0
3 years ago
the u.s department of agriculture reported that 57 out of every 100 milk drinkers drink skim milk. if a storeowner orders 24 gal
S_A_V [24]
STEP 1:
Find percentage. 57 out of 100 is the percentage to multiply by.

57/100= 0.57 (= 57%)

STEP 2:
Multiply percentage by the total gallons ordered (24).

=24 gallons * 0.57
=13.68 gallons


ALTERNATIVE METHOD (use which works best for you)

Set up a proportion. 57 to 100 is x out of 24 gallons.

x= number skim gallons to order

57/100= x/24
cross multiply
(57*24)= (100*x)
1368= 100x
divide both sides by 100
13.68 gallons= x

ANSWER: Since you cannot order a partial gallon of milk, round up to 14 whole gallons

Hope this helps! :)
4 0
3 years ago
Writing to Explain In the equation x-3.5 = 7.2, why cant you just add 3.5 tonone side of the equation to get x alone? I'll give
valentinak56 [21]

Answer as follow: happy to help always.....

Step-by-step explanation:

x-3.5 = 7.2

x = 7.2+ 3.5

as you know that 3.5 is subtracting over other side while moving it on 7.2 side it will add..

7.2+3.5

10.7

so,

x= 10.7

you can check ✅✅✅✅

Thank you!!!!!!!!!

3 0
3 years ago
In Tucson, Arizona, the air pollution index averages 62.5 during the year with a standard deviation of 18. assuming normality, t
andrew-mc [135]
The interval of 95% confidence, for normally distributed variables, is average +/- 2 * standard deviation:

(-2*standard deviation + average , average + 2*standard deviation)

(-2*18 + 62.5 , 2*18 + 62.5) = (-36 + 62.5 , 36 + 62.5) = (26.5 , 98.5)

Answer: option D)


8 0
3 years ago
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