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3 years ago

3n+12=20............. solve.....

Mathematics

1 answer:

Solnce55 [7]3 years ago

5 0

Answer:

N= 2.6666666667

Step-by-step explanation:

20-12=8

8/3=2.6666666667

n=2.6666666667

Pls mark as brainliest!! <3 Thx :)

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30% in simplest form

Lady bird [3.3K]

Answer:

I think it's 3/10

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

For questions 8 – 10, answer the questions about tangent-tangent angles.

olchik [2.2K]

Answer:

m(arc ZWY) = 305°

Step-by-step explanation:

8). Formula for the angle formed outside the circle by the intersection of two tangents or two secants is,

Angle formed by two tangents = $\frac{1}{2}(\text{Difference of intercepted arcs})$

= $\frac{1}{2}(220-140)$

= $\frac{1}{2}(80)$

= 40°

9). Following the same rule as above,

Angle formed between two tangents = $\frac{1}{2}(\text{Difference of intercepted arcs})$

125 = $\frac{1}{2}[m(\text{major arc})-m(\text{minor arc})]$

250 = $[m(\text{arc ZWY})-m(\text{arc ZY})]$

250 = m(arc ZWY) - 55

m(arc ZWY) = 305°

Therefore, measure of arc ZWY = 305° will be the answer.

10). m(arc BAC) = $\frac{1}{2}([m(\text{arc BDC})-m(\text{arc BC})])$

= $\frac{1}{2}(254-106)$

= $\frac{148}{2}$

= 74°

4 0

2 years ago

At a local store, kelly and martin bought some notebooks and pencils. Kelly bought 4 notebooks and 25 pencils for 16.71. Martin

Nat2105 [25]

Let n = cost of 1 notebook
Let p = cost of 1 pencil

Then,

3n + 4p = 8.5
5n + 8p = 14.5

You can solve for one variable in terms of the other and then substitute into the remaining equation.

3n + 4p = 8.5
+ 5n + 8p = 14.5

Multiply the top equation by -2 so that the p-containing terms cancel each other out:

-2(3n + 4p = 8.5)
+ 5n + 8p = 14.5
-n + 0 = -2.5

So after dividing both sides by -1, we see that n = $2.5. Plugging into the first equation gives p = $0.25.

3n + 4p = 8.5
5n + 8p = 14.5

6 0

3 years ago

Which values of P and Q does the following equation have infinitely many solutions?

vladimir1956 [14]

Any value as long as P = Q

For the equation to have infinitely many solutions, we require both sides of the equation to have exactly the same terms.

4 0

3 years ago

3pr - 4ps + 12qs - 9qr = ?

aleksklad [387]

It cannot be simplified more than that. hope this helps!

4 0

3 years ago