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Nana76 [90]
3 years ago
6

Solve equation 3x + 5 = 14 -2a - 7 = 10 -6y + 4 = -8

Mathematics
2 answers:
Yuliya22 [10]3 years ago
6 0

x=-13/3
a= 7.5
y=11/3

3x+13=15-2a=22-6y=0

solve for x:
3x+13=0
3x=-13
x=-13/3

solve for a:
15-2a=0
-2a+15=0
-2a=-15
a= 7.5

solve for y:
22-6y=0
-6y+22=0
-6y=-22
y=11/3
Anon25 [30]3 years ago
4 0

Answer:

since when did questions have 2 equal signs

this looks made up

Step-by-step explanation:

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Find the value of x and y in the given parallelogram
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Answer:

Step-by-step explanation:

9y-4 = 50

9y = 54

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9y-4+7x+xy = 180

9(6)-4+7x+6x= 180

54-4+13x = 180

13x+50 = 180

13x = 130

x = 10

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3 years ago
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Step-by-step explanation:

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2 years ago
Trigonometric question, 30 points, will give brainliest.
zheka24 [161]

hmmm first off let's convert the √3 +i to trigonometric form, and then use De Moivre's root theorem, bearing in mind that √3 and i or 1i are both positive, meaning we're on the I Quadrant.

\bf (\stackrel{a}{\sqrt{3}}~,~\stackrel{b}{1i})\qquad \begin{cases} r=&\sqrt{(\sqrt{3})^2+1^2}\\ &\sqrt{3+1}\\ &2\\ \theta =&tan^{-1}\left( \frac{1}{\sqrt{3}}\right)\\\\ &tan^{-1}\left( \frac{\sqrt{3}}{3} \right)\\ &\frac{\pi }{6} \end{cases}~\hfill \implies ~\hfill 2\left[ cos\left( \frac{\pi }{6}\right) +i~sin\left( \frac{\pi }{6}\right) \right]

\bf ~\dotfill\\\\ \qquad \textit{power of two complex numbers} \\\\\ [\quad r[cos(\theta)+isin(\theta)]\quad ]^n\implies r^n[cos(n\cdot \theta)+isin(n\cdot \theta)] \\\\[-0.35em] ~\dotfill

\bf \left[ 2\left[ cos\left( \frac{\pi }{6}\right) +i~sin\left( \frac{\pi }{6}\right) \right] \right]^3\implies 2^3\left[ cos\left( 3\cdot \frac{\pi }{6}\right) +i~sin\left( 3\cdot \frac{\pi }{6}\right) \right] \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill 8\left[cos\left( \frac{\pi }{2} \right) +i~sin\left( \frac{\pi }{2} \right) \right]~\hfill

3 0
4 years ago
Which value of x is not a solution to 3x−1&lt;5 or 7−x≤3 ?<br> A 0<br> B 2<br> C 4<br> D 5
LuckyWell [14K]

Answer:

B

Step-by-step explanation:

pls mark me brainless pls

7 0
3 years ago
Boxes that are 12 inches tall are being piled next to boxes that are 10 inches tall. What is the least
zysi [14]

Answer:

60 inches

Step-by-step explanation:

the least common multiple of 12 and 10 is 60

you can use the prime factorization tree or a list method

1st multiple of 10: 10                               1st multiple of 12: 12

1st multiple of 10: 20                               1st multiple of 12: 24

1st multiple of 10: 30                               1st multiple of 12: 36

1st multiple of 10: 40                               1st multiple of 12: 48

1st multiple of 10: 50                               1st multiple of 12: 60

1st multiple of 10: 60                              

You can stop when a common multiple is reached

3 0
3 years ago
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