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Firlakuza [10]
3 years ago
10

12-15÷ 3-3 somebody help me plsss!!

Mathematics
1 answer:
Shtirlitz [24]3 years ago
5 0

Hello.

The answer is: 4

12-(15/3)-3 = 0

(1/4)*(x-8) = 2

(3*b)/5 = -2

3;4;-5;6

1;4;2;3

Have a nice day

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uysha [10]
The answer is 11/12. (:
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3 years ago
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Howdy! Id love to have these questions answered asap! Thank you for the help!
tiny-mole [99]

Answer:

<em>1. B.</em>

<em>2. B.</em>

Step-by-step explanation:

<u>Trigonometry</u>

1) Coterminal angles can be found by adding or subtracting 360° (or 2\pi radians) to a given angle. If we have 120°, adding 360° gives 480°, adding again 360° gives 840°. There is no way to get -180°, so this option is not a coterminal angle to 120°

2)

A. Cos (-90^o)=0, and not undefined

B. Sin (-90^o)=-1. This is correct

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Thus the only correct option is B.

8 0
3 years ago
A chair is on sale at a price of £20.80. This is a 20% reduction of the normal price what was the price of the chair before the
Vladimir [108]

Answer:

Explanation is in photo

Step-by-step explanation:

8 0
3 years ago
Write an equation and solve: Your math homework has 6 more than three times the number of problems you have on your history work
love history [14]

Answer:

33 math problems

Step-by-step explanation:

Let's set a few variables:

Number of math problems = m

Number of history problems = h

We know that in total, we have 42 problems.

m + h = 42

We also know that our math homework has 6 problems more than 3 times the number of history problems.

m = 3*h + 6

So m is 3 times h, plus 6.

m + h = 42

We can subtract h from both sides of this equation.

m = 42 - h

Now we can put this value for m, 42-h, into our other equation.

m = 3*h + 6

42 - h = 3*h + 6

Subtracting 6 from both sideS:

36 - h = 3*h

Adding h to both sides:

36 = 3*h + h

36 = 4*h

Dividing both sides by 4:

9 = h

h = 9

We know that the number of math problems is the following:

m = 42 - h

Let's put the value for h, 9, into this equation:

m = 42 - 9

m = 33

Answer: 33 math problems

5 0
3 years ago
In triangle OPQ, p = 38 cm, q = 29 cm and Angle O=39º. Find the length of o, to the nearest
Lisa [10]

Answer:

The length of o is 24 centimeters

Step-by-step explanation:

In Δ OPQ

∵ Side p is opposite to ∠P

∵ Side q is opposite to ∠Q

∵ Side o is opposite to ∠O

→ To find side o we must use the cosine rule

∴ o = \sqrt{p^{2}+q^{2}-2(p)(q).cos(O)  }

∵ p = 38 cm

∵ q = 29 cm

∵ m∠O = 39°

→ Substitute them in the rule to find o

∴ o = \sqrt{(38)^{2}+(29)^{2}-2(38)(29).cos(39)}

∴ o = 23.92008154

→ Round it to the nearest centimeter (whole number)

∴ o = 24 centimeters

∴ The length of o is 24 centimeters

6 0
3 years ago
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