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2 years ago

What two ways can you find the product of 8x997 using mental math

1 answer:

7 0

8=10-2 or
997=1000-3
so we can use distributive property
remember, a(b+c)=ab+ac

for the first one
8(997)=(10-2)(997)=997(10-2)=997(10)+997(-2)=9970-1994=7976

2nd one
8(997)=8(1000-3)=8(1000)+8(-3)=8000-24=7976

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The measures of two supplementary angles are (2x + 10)° and (6x + 8)°.

bearhunter [10]

Answer:

smaller angle is 50.5 degrees

Step-by-step explanation:

supplementary angles when added together = 180 degrees

(2x + 10) + 6x + 8 = 180

combine like terms

8x + 18 = 180

move the 18 over by subtraction

8x = 162

divide by 8 to get x by itself

x = 20.25

so plug in to find smaller angle

2(20.25) + 10 = 50.5

6(20.25) + 8 = 129.5

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2 years ago

16 teams In a football league, each team plays each other twice , how many games are there in the football league in total ?

Brilliant_brown [7]

Answer:

120 games.

Step-by-step explanation:

We have been given that there are 16 teams in a football league. Each team plays each other twice. We are asked to find total number of games are there in the football league.

We will use formula $\frac{n(n-1)}{2}$ to solve our given problem.

Each team will play matches with one team less as it will not play match with itself.

We will divide all number of matches by 2 to avoid repetition.

$\frac{16(16-1)}{2}=\frac{16(15)}{2}=8*15=120$

Therefore, there are 120 games in the football league.

4 0

2 years ago

Question 6

olga nikolaevna [1]

The answer to your question: 5 - 6t
why it’s saying for each number for 6 so what ever number times 6 is t

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2 years ago

Which expression shows how 6 • 45 can be rewritten using the distributive property?

tatuchka [14]

6*45=270 is the first step you should do to get the answer you are looking for. The next thing I would do is go to all the answers to see which one comes out the same way. The first one comes to be 246, the next one is 54, the next is 270 and the last one is 220. 6*40+6*5 is the correct answer.

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Which expression is equivalent to sec²x - 1? A. cot²x B. tan²x C. CsC²x D. cos²x

Andrei [34K]

Answer:

Step-by-step explanation:

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1 year ago