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Tamiku [17]
3 years ago
8

Mario is missing half of his assignments. If a represents the number of assignments, write an expression to show how many assign

ments Mario is missing.
Mathematics
1 answer:
tekilochka [14]3 years ago
5 0

You can't answer this you have no actual information. You don't know how many assignments there are.

a/2 would be the only possible answer

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Evalute costheta if sintheta = (sqrt5)/3
torisob [31]

Answer:

\large\boxed{\cos\theta=\pm\dfrac{2}{3}}

Step-by-step explanation:

Use \sin^2x+\cos^2x=1.

We have

\sin\theta=\dfrac{\sqrt5}{3}

Substitute:

\left(\dfrac{\sqrt5}{3}\right)^2+\cos^2\theta=1\qquad\text{use}\ \left(\dfrac{a}{b}\right)^n=\dfrac{a^n}{b^n}\\\\\dfrac{(\sqrt5)^2}{3^2}+\cos^2\theta=1\qquad\text{use}\ (\sqrt{a})^2=a\\\\\dfrac{5}{9}+\cos^2\theta=1\qquad\text{subtract}\ \dfrac{5}{9}\ \text{from both sides}\\\\\cos^2\theta=\dfrac{9}{9}-\dfrac{5}{9}\\\\\cos^2\theta=\dfrac{4}{9}\to \cos\theta=\pm\sqrt{\dfrac{4}{9}}\\\\\cos\theta=\pm\dfrac{\sqrt4}{\sqrt9}\\\\\cos\theta=\pm\dfrac{2}{3}

3 0
3 years ago
Read 2 more answers
Triangle ABC is isosceles. What are the steps you would take to construct the perpendicular bisector for segment AB.​
CaHeK987 [17]

Answer:

look at my Step-by-step explanation

Step-by-step explanation:

The perpendicular bisector of a line segment

open the compass more than half of the distance between A and B, and scribe arcs of the same radius centered at A and B.

Call the two points where these two arcs meet C and D. Draw the line between C and D.

CD is the perpendicular bisector of the line segment AB. Call the point where CD intersects AB E.

Proof. top.

6 0
2 years ago
Carla is arranging square patches of grass on her rectangular lawn her lawn is 10 yards wide and 3 and 1/2 yards long how many s
mezya [45]

Answer:

I don't know if this is correct but wouldn't it be 560?

Step-by-step explanation:

If you have 10 on one side, you divide 10 by 1/4 to get 40. So you need 40 blocks to fill one side, and 3 1/2 on the other only needs 14. 14*40=560.

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2 years ago
What is the vertex of f(x) = 2 ( x- 5)^2 +13
andrew-mc [135]
The answer is NO SOLUTION I hope
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2 years ago
Line p is parallel to line q. If the
KIM [24]

Answer:

Alternate interior angles are congruent so 3 = 6.  54 degrees

Step-by-step explanation:

3 0
3 years ago
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