3 years ago

Fill in the blank to create a true equation:

Mathematics

2 answers:

rodikova [14]3 years ago

6 0

Answer:

-7

Step-by-step explanation:

Mental math.........

irakobra [83]3 years ago

6 0

Answer: I do not know

Step-by-step explanation:

I dropped out of 2nd grade

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find the equation of the straight line which has a gradient of 3 and passes through the point (-1, 3)

iogann1982 [59]

Answer:

y=3x+6

Step-by-step explanation: 3=3(-1)+b

3=-3+b

+3 +3

6=b

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2 years ago

I don't understand no this at all

Katena32 [7]

Answer:

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Step-by-step explanation:

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3 years ago

7. There are 3 times as many adventure books as comic books in a bookshop. If there are 879 adventure books in the bookshop, how

dsp73

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2 years ago

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tatuchka [14]

*triple phytagoras*
first triangle h = second triangle h = 24 in

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2 years ago

DOES ANYONE KNOW THE ANSWERS TO THESE PROBLEM, PLZ HELP!

Virty [35]

Answer:

Q.1.

Sum of angles of a triangle = 180°

∠A + ∠B + ∠c = 180

(3x - 9) + (4x + 15) + 90 = 180

3x - 9 + 4x + 15 + 90 = 180

7x + 96 = 180

7x = 84

x = 12

∠A = 3x - 9 = 3(12) - 9 = 36 - 9 = 27°

∠B = 4x + 15 = 4(12) + 15 = 48 + 15 = 63°

∠A = 27°

∠B = 63°

Q.2.

$using \ pythagoras \ theorem \\x^2 = 7^2 + (7\sqrt{3} )^{2} = 49 + 49(3) = 196\\x = \sqrt{196} = 14$

$sin y = \frac{opposite}{hypotenuse} = \frac{7\sqrt{3} }{14} = \frac{\sqrt{3} }{2} \\\\y = sin^{-1} (\frac{\sqrt{3} }{2} ) = 60$

x = 14

y = 60°

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2 years ago