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igomit [66]
3 years ago
6

Choose the product.

Mathematics
1 answer:
Natalka [10]3 years ago
5 0

Answer:

-20p 5 - 15p 4+ 5p 3

Step-by-step explanation:

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Find the length of the tangent segment AB to the circles centered at O and O' whose radii are a and b respectively when the circ
bixtya [17]

Answer:

AB=2\sqrt{ab}

Step-by-step explanation:

From figure,

OA=a,  \quad \quad O'B=b\\\Rightarrow OO'= (a+b) \quad \quad \text{and}\quad OD=(a-b)

In triangle OO'D

  (OO')^2=(OD)^2+(O' D)^2

\Rightarrow (a+b)^2=(a-b)^2+(O' D)^2\\\Rightarrow a^2+b^2+2ab-a^2-b^2+2ab=(O' D)^2\\\Rightarrow 4ab=(O' D)^2\\\Rightarrow O'D=2\sqrt{ab} \\\Rightarrow O' D=2\sqrt{ab}=AB \quad \quad [\because O' DAB\;\; \text{is a rectangle.}]

Hence, AB=2\sqrt{ab}

6 0
3 years ago
5th grade math. correct answer will be marked brainliest
Vlada [557]

Answer:

Step-by-step explanation:

1\frac{1}{2} * \frac{1}{3} = \frac{3}{2}*\frac{1}{3}    cross cancel    then  you have  \frac{1}{2}   :)

7 0
3 years ago
Read 2 more answers
How can you use similar triangles to find a missing measurement?
Vlad1618 [11]

Answer:

By comparison of the sides.

Step-by-step explanation:

If triangles are similar, that means their angles are equal and sides are proportional.

If you already have a proportion of two corresponding sides between triangles, then use that proportion and set it equal to a side you already know the measurement to. Hopefully that side is corresponding to your missing measurement, and you can then solve it.

8 0
3 years ago
How can u tell that 647 is less than 674?
Amiraneli [1.4K]
Look at the tenth's place. (:
5 0
3 years ago
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Solve the equation n2 − 29 = 260 by using square roots.
umka2103 [35]

Answer:

Option A, n = ± 17

Step-by-step explanation:

<u>Step 1:  Add 29 to both sides</u>

n^2 - 29 = 260

n^2 - 29 + 29 = 260 + 29

n^2 = 289

<u>Step 2:  Square root both sides</u>

\sqrt{n^2} = \sqrt{289}

n = ± 17

Answer:  Option A, n = ± 17

4 0
2 years ago
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