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wlad13 [49]
2 years ago
9

A) Work out (5 x 10°) (9 x 10')

Mathematics
1 answer:
KatRina [158]2 years ago
7 0

the most hard <em><u>question</u></em><em><u> </u></em><em><u>i</u></em><em><u> </u></em><em><u> </u></em><em><u>ever</u></em><em><u> </u></em><em><u>known</u></em><em><u> </u></em><em><u> </u></em><em><u>it</u></em><em><u> </u></em><em><u>need</u></em><em><u> </u></em><em><u>intelligent</u></em><em><u> </u></em><em><u> </u></em><em><u>pupil</u></em><em><u> </u></em>

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What 2 numbers multiply to be -14 and add to be -3
Svetach [21]
Xy = -14
x + y = -3

xy = -14
\frac{xy}{x} = \frac{-14}{x}
y = \frac{-14}{x}

x + y = -3
x + \frac{-14}{x} = -3
\frac{x^{2}}{x} + \frac{-14}{x} = -3
\frac{x^{2} - 14}{x} = -3
x^{2} - 14 = -3x
x^{2} + 3x - 14 = 0
x = \frac{-(3) \± \sqrt{(3)^{2} - 4(1)(-14)}}{2(1)}
x = \frac{-3 \± \sqrt{9 + 56}}{2}
x = \frac{-3 \± \sqrt{65}}{2}
x = \frac{-3 \± 8.06}{2}
x = -1.5 \± 4.03
x = -1.5 + 4.03    or    x = -1.5 - 4.03
x = 2.53    or    x = -5.53

        x + y = -3
   2.53 + y = -3
 - 2.53         - 2.53
              y = -5.53
        (x, y) = (2.53, -5.53)
         
         x + y = -3
  -5.53 + y = -3
+ 5.53         + 5.53
              y = 2.53
        (x, y) = (-5.53, 2.53)

The two numbers that multiply to -14 and add up to -3 are -5.53 and 2.53.
8 0
3 years ago
Look at the image below
boyakko [2]

Answer:

201.1 km²

Step-by-step explanation:

Surface area of the figure,

4πr²

= 4×π×4²

= 64π

= 201.1 km² (rounded to the nearest tenth)

4 0
3 years ago
Onny wants to buy a guitar that costs $600. He makes $2 per day. How many days will it take Onny to save enough money to buy the
lana66690 [7]

Answer:

300 days

Step-by-step explanation:

What you have to do is divide 600/2. Then you get 300.

Hope it helped :)

4 0
3 years ago
Find the missing angle measure. then classify the triangle by its angles and by its sides.
iren [92.7K]

Answer:

Part a) The measure of the missing angle is 90\°

Part b) The triangle of the figure is a right triangle

Part c) The triangle of the figure is a scalene triangle

Step-by-step explanation:

we know that

The sum of the interior angles of a triangle is equal to 180\°

so

Let

x------> the missing angle

we know that

x\°+50\°+40\°=180\°

solve for x

x=180\°-90\°=90\°

The triangle of the figure is a right triangle --------> by its angles

Because the triangle has an angle measure of 90\°

The triangle of the figure is a scalene triangle --------> by its sides

Because the three angles and the three sides measures are different

8 0
3 years ago
Read 2 more answers
What is the company’s quick Ratio?
ArbitrLikvidat [17]

Answer:

c.

Step-by-step explanation:

8 0
3 years ago
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