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dybincka [34]
2 years ago
11

Solve by factoring x^2 + 8x =9

Mathematics
1 answer:
Helen [10]2 years ago
6 0

Answer:

x=-9,\:x=1

Step-by-step explanation:

x^2+8x=9\\x^2+8x-9=0\\(x+9)(x-1)=0\\x=-9,\:x=1

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Select the correct answer. What is the factored form of 24y5 + 3y2?<br><br>​
mylen [45]
It’s b. :) hope this helps you
8 0
3 years ago
Help 15 points!!!!!!!!!!!!!!!!!!!!!
Svetllana [295]

Answer:

see explanation

Step-by-step explanation:

Using the tangent ratio in the right triangle

tan A = \frac{opposite}{adjacent} = \frac{BC}{AC} = \frac{7}{8} , then

∠ A = tan^{-1} (\frac{7}{8} ) ≈ 41° ( to the nearest degree )

The sum of the angles in the triangle = 180° , then

∠ B + 41° + 90° = 180°

∠ B + 131° = 180° ( subtract 131° from both sides )

∠ B = 49°

Using Pythagoras' identity in the right triangle

AB² = BC² + AC² = 7² + 8² = 49 + 64 = 113 ( take square root of both sides )

AB = \sqrt{113} ≈ 10.6 ( to the nearest tenth )

3 0
3 years ago
Omar can jog 3 2/5 miles in 2/3 of an hour. Find his average speed in miles per hour.
Fudgin [204]

Answer:

9.6miles per hour

Step-by-step explanation:

2/3=40min

32/5 /40=0.16

0.16miles per min

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3 0
3 years ago
Read 2 more answers
this graph shows the relationship between the pound of cheese brought at a deli and the total cost in dollars for the cheese
Savatey [412]

Easy! The best answer is B!

PLEASE GIVE ME THE BRAINLIEST I TRIED REALLY HARD ON THIS QUESITON!


3 0
3 years ago
helene was paid a total of $33.00 for the 6 hours she worked. she continues to be paid at the same rate. how long would it take
natita [175]

The number of hours that helena need to work to generate 165 dollars is

33 hours.

Helena has to work hours to earn $165. 33

Algebraic equations are equations with

unknown variables. The alphabet letters are used to represent algebraic equations.

Total $33.00 in her 6 hours she worked.

This question should find out how long it takes her to earn her $165.00 in that job.

let x hours be required work hours to earn $165.00 ..

This can be expressed in algebraic equations as:

x= 6× 165/33

x= 990/33

x= 30

Hence, helna have to work thirty hours to earn $165.00 ..

To learn more about Work time problem solving, refer:

brainly.com/question/15447610

#SPJ4

7 0
1 year ago
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