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Anastaziya [24]
2 years ago
15

Solve x2 + 11x + 30 = 0

Mathematics
1 answer:
Zarrin [17]2 years ago
7 0

Answer:

x = - 5, - 6

Step-by-step explanation:

x^2 + 11x + 30 = 0

x^2 + 5x + 6x + 30 = 0

x ( x + 5 ) + 6 ( x + 5 ) = 0

( x + 6 ) ( x + 5 ) = 0

x + 6 = 0

x = - 6

x + 5 = 0

x = - 5

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In the parallelogram, M
alexira [117]

Answer:

  • 112°

Step-by-step explanation:

<u>Given parallelogram JKLM with:</u>

  • m∠KLO = 53°
  • m∠MLO = 59°

<u>Find:</u>

  • m∠KJM

<u>We know opposite angles of parallelogram are congruent:</u>

  • m∠KJM = m∠KLM

<u>Use angle addition postulate:</u>

  • m∠KLM = m∠KLO + m∠MLO
  • m∠KLM = 53° + 59°
  • m∠KLM = 112°
5 0
2 years ago
The sail of a boat is in the shape of a right triangle, as shown below:
dolphi86 [110]
Answer: Choice C
7 divided by cosec 50 degrees

=====================================

Explanation:

Abbreviations:
sec = secant
cot = cotangent
cosec = cosecant (csc is also a widely used abbreviation)

-----------------

Let the horizontal leg be x

This leg is opposite the angle 50 degrees. The hypotenuse is 7

Opposite = x
Hypotenuse = 7

We'll either use the sine rule or the cosecant (csc) rule
sine = opposite/hypotenuse
cosecant = hypotenuse/opposite

Since "sine" is nowhere to be found in the answer choices, we'll use the cosecant rule

-----------

cosecant = hypotenuse/opposite
csc(angle) = hypotenuse/opposite
csc(50) = 7/x
x*csc(50) = 7
x = 7/csc(50)

This is why the answer is choice C

6 0
2 years ago
Read 2 more answers
Which statements are always true regarding the
umka21 [38]

C) m∠5 + m∠6 =180°

D) m∠2 + m∠3 = m∠6

E) m∠2 + m∠3 + m∠5 = 180°

Step-by-step explanation:

TRUST ME! JUST TOOK MY QUIZ ON E2020

3 0
2 years ago
GCF of 35,5,70 is???
Vanyuwa [196]

Answer:

5

Because, five can go into 5, 35 and 70. Nothing else bigger can. If we went bigger we would be going over five.

Hope this helps :)

6 0
3 years ago
4 - 1/12g - 2 = 3/2g + 1 - 5/6g
astra-53 [7]

Answer:

2-\frac{1}{12g} =\frac{2}{3g} +1

g = \frac{3}{4}

8 0
2 years ago
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