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Tems11 [23]
3 years ago
7

When I multiply 9x9 how would I go about counting by 9s?

Mathematics
1 answer:
11111nata11111 [884]3 years ago
5 0

Answer:

If you're looking for a shortcut, I usually find the number 1 less than what you are multiplying 9 by, this case 8, and then add a number that gets to 9.

So 9x6 would be:

5+4=9

54

Step-by-step explanation:

When multiplying by 9s the product's two numbers added together =9.

Sorry if this is confusing. Hope this helps though.

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The area of a circle is 98. 74cm2. Find the length of the radius rounded to 2 DP
olga nikolaevna [1]

Answer:

I believe it is 15.72cm.

Step-by-step explanation:

5 0
2 years ago
Find the value of v and w to the nearest tenth.​
Anton [14]

Answer:

Trigonometry Ratio:

Sin65°=v/15

v=15 sin65°

v=13.6°

Sinw°=v/21

= 13.6/21

w=sin^{-1}(13.6/21)

w=40.3°

Hope it helps! :)

6 0
2 years ago
(05.06)
Ymorist [56]

the answer for this question is (B) 5,-2

7 0
4 years ago
What is the area, in square centimeters, of the shape below? Express your answer as a fraction in simplest form.
Lina20 [59]
4/9 cm^2 and I hope the picture explains it

7 0
3 years ago
Find the cosine of ∠T.
Ostrovityanka [42]

ANSWER: ∠T = 32.4°

Remember the formula for the basic trig functions: SOH CAH TOA

Since you want to find cosine for <T, you need the adjacent side length as well as the hypotenuse's length which can be found using the Pythagoras's Theorem  a^2+b^2=c^2 with <em>a </em> and <em>b</em> being the side lengths and <em>c</em> being the hypotenuse.

Using the theorem, we get c=37

Now use the cosine formula to get <T = 12/37  to get the final answer.

4 0
3 years ago
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