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2 years ago

Please help it’s urgent

Mathematics

2 answers:

Ray Of Light [21]2 years ago

6 0

Answer:

I feel like I got it wrong so feel free to correct

oh and Im assuming that 70 means everyone who is doing spanish if not sorry :|)

Step-by-step explanation:

1-60

2-70

3-155

4-87

5-15

Oh and it might be because I assumed wrong...?

kari74 [83]2 years ago

3 0

Answer:

(1) 15+60=75

(2) 70+3+5+15=93

(3) 93+85+60=238

(4) 70+3+17=90

(5) 238+17=255

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2 years ago

Read 2 more answers

Find sin 0, where is the angle shown. Give an exact value, not a decimal approximation.

Nata [24]

Answer:

$\displaystyle \sin\theta=\frac{12}{13}$

Step-by-step explanation:

Recall that in a right triangle, sine is the ratio of the opposite side to the hypotenuse:

$\displaystyle \sin\theta=\frac{\text{opposite}}{\text{hypotenuse}}$

We are actually not given the opposite side in this case. However, since we know the hypotenuse and the adjacent side, we can use the Pythagorean Theorem to find the opposite side. So:

$a^2+b^2=c^2$

Let a be the adjacent side and b be the opposite side. c will be the hypotenuse.

Substitute:

$(5)^2+b^2=(13)^2$

Solve for b:

$b=\sqrt{169-25}=\sqrt{144}=12$

So, the opposite side measures 12.

Then sine will be:

$\displaystyle \sin\theta=\frac{12}{13}$

3 0

2 years ago

Find the value of y. 24 18 у Answer:

stiv31 [10]

Answer:

Step-by-step explanation:

It has been going down by 6 because 24-6=18 and 18-6=12.

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2 years ago

Find an expression for the number of colored border tiles needed for any N x N square center.

nekit [7.7K]

Answer:

8N - 4 border tiles.

Step-by-step explanation:

There are 4 border tiles in each corner and between the tiles there are N-2 tiles along the 4 sides.

So the number of border tiles

= 4+ 4(N - 2)

= 4 + 4N - 8

= 8N - 4.

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2 years ago