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xenn [34]
3 years ago
11

28 squared minus 39x minus 80 equals 0​

Mathematics
1 answer:
Rudik [331]3 years ago
3 0

Answer:

x = 704/39 ( <----Fraction)

Step-by-step explanation:

28 squared minus 39x minus 80 equals 0​  

784-39x-80=0  evaluate the power

704-39x=0  Subtract the numbers

-39x=-704  move the constant to the right hand side and change it's sign

Divide on both side to get x = 704/39

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ddd [48]

Answer:

16

Step-by-step explanation:

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3 years ago
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Expand. Your answer should be a polynomial in standard form. (1−4m)(m 2 −3m+8)
torisob [31]

Answer: Its 4m^2 - 33m + 8

7 0
3 years ago
13% of $99.99 =<br> $26.00<br> O $25.98<br> O $13.00<br> O $12.99
vova2212 [387]

Answer:

12.99 or 13 rounded

Step-by-step explanation:

99.99/(.13)=12.9987

8 0
2 years ago
What are the trigonometric ratios of in a right triangle with the given value tan A = 9/40
hjlf

The trigonometric ratios of the right triangle with the given value tan A = 9 / 40 are

sin A = 9 / 41

cos A = 40 / 41

<h3>Trigonometric ratios</h3>

Trigonometric ratios are used to solve for the sides and angles of a right angle triangle.

Therefore,

sin A = opposite / hypotenuse

cos A = adjacent / hypotenuse

tan A = opposite / adjacent

Using Pythagoras theorem, let find the hypotenuse side

c² = 40² + 9²

c = √1681

c = 41

Therefore,

sin A = 9 / 41

cos A = 40 / 41

learn more on trigonometric ratios here: brainly.com/question/24320387

#SPJ1

8 0
2 years ago
HELP ASAP will give BRAINLIEST
tester [92]

Hey there! I'm happy to help!

The question tells us that m∠JKL is 54. We see from the diagram that this is the combination of the angles m∠JKM and m∠MKL. So, we can combine their values, which are equal to 54 to find x.

13x+1+5x+4=54

We combine like terms

18x+5=54

We subtract 5 from both sides.

18x=49

We divide both sides by 18.

x=2.7222222....

Now, we want to find the measure of m∠MKL. We plug our x value into the value of this angle and evaluate.

5(2.722....)+4=17.61111....... or 17 11/18.

Have a wonderful day and keep on learning! :D

3 0
3 years ago
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