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3 years ago

Planet Distance from sun (in km) Distance in scientific notation

Mathematics

1 answer:

Westkost [7]3 years ago

6 0

Answer:

1.5.7909 2. 6.724 3. 9.296 4. 1.416 5. 4.838 6. 1.784 7. 2.793 8. 2.793

Step-by-step explanation: these are the planets in order hope this helps

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Does 30,40 ,and 45 form a right triangle

Rashid [163]

In order to find out, you need to square 45 and see weather it is equal to 40^2+30^2
in the end , 1600 won't be equal to 2500 so it won't form a right triangle.

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3 years ago

Root5 /2 root5 -1

irakobra [83]

Answer:

10, 5, 19

Step-by-step explanation:

Recall that

${a}^{2} - {b}^{2} = (a + b)(a - b)$

So we can multiply the fraction by

$\frac{2 \sqrt{5} + 1 }{2 \sqrt{5} + 1 }$

And get

$\frac{ \sqrt{5} }{2 \sqrt{5} - 1} \times \frac{2 \sqrt{5} + 1 }{2 \sqrt{5} + 1 } = \frac{10 + \sqrt{5} }{20 - 1} = \frac{10 + \sqrt{5} }{19}$

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3 years ago

(Kind of urgent!) Using the figure below, find the value of a. Enter your answer as a simplified radical or improper fraction (i

olchik [2.2K]

Answer:

a = 15/4

Step-by-step explanation:

tan 60 = y/a

√3 = y/a

y = √3a

tan 30 = y/b

1/√3 = y / b

y = b/√3

√3 a = b/√3

3a = b

a+b = 15

a + 3a = 15

4a = 15

a = 15 / 4

8 0

3 years ago

Read 2 more answers

B) (1 - cos B)(1 + cos B) =<br> 1/cosec^2(B)

faltersainse [42]

Answer:

Proved

Step-by-step explanation:

$(1-cosB)(1+cosB)=\frac{1}{cosec^2B} \\\\Use\\\\ (a+b)(a-b)=a^2-b^2 ,\\so,\\=(1)^2-(cosB)^2\\=1-cos^2B\\\\Now\ , we\ know\ \\sin^2B+cos^2B=1\\\\so,\\sin^2B=1-cos^2B\\so we just replace,\\\\=1-cos^2B=>sin^2B\\and\ since\ sinB=\frac{1}{cosecB} \\\\=sin^2B=>\frac{1}{cosec^2B}\\$

4 0

3 years ago

I need to know the answer step by step.

allochka39001 [22]

Answer:

108

Step-by-step explanation:

Since B=3, you need to do 4(3)^2*3

Do 3^2, which is 9,

4*9=36,

36*3=108

7 0

4 years ago