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a_sh-v [17]
3 years ago
15

I’ve been stuck on this for a few minutes. I’m not really sure what to do..

Mathematics
1 answer:
rewona [7]3 years ago
7 0

Answer:

Step-by-step explanation:

You know that the three angles of a triangle add up to 180°. If one angle is 38° and another angle is 67°, then the third angle must be 180°-38°-67° = 75°.

You have a straight line across the bottom, and three angles meeting in the middle of it. Those three angles add up to 180°. One of them is 75°, another is 50°, so the third angle must be 180°-75°-50° = 55°.

That leaves you with one unknown angle. ? = 180°-40°-55° = 85°

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How many 4-digit odd numbers can you make using the digits 1 to 7 if the numbers must be less than 6000? No digits are repeated.
bixtya [17]

Answer:

Step-by-step explanation:he first digit must be a 6, 7, or 8, because the number has to be bigger than 6,000.

The last digit must be a 1, 3, 5, or 7, because the number has to be odd.

So if the first digit is 6 or 8, there are 4 odd-number options for the last digit. If the first digit is a 7, then there are only 3 options for the last digit, as 7 can’t be used twice.

The other two digits can be anything that’s not already used. So for each first-and-last combination of digits mentioned above, there will be six options available for one of the middle digits, and then for each of those 3-digit combinations, five options will be available for the final remaining digit.

At this point, we have everything we need to express this as an equation:

x = (2 x 4 + 1 x 3) x 6 x 5

And then we can simplify and solve:

x = (8 + 3) x 30

x = 11 x 30

x = 330

6 0
2 years ago
6. a- 45/8= 2 6/7.. what does a =​
frozen [14]

Answer:

-2.76785714286

Step-by-step explanation:

I think that a equals to -2.7678571428

Anyways heyy!!!:)

8 0
3 years ago
yesterday Kate and her cousin Robert went out for a movie. there they spent $50 in total. Robert spent $10 more than kate. how m
antoniya [11.8K]

<em>while the two were at the movies Katie spent $40.00</em>

6 0
3 years ago
How do i solve X+1/2x=5-1/5x
stealth61 [152]

Answer:

Step-by-step explanation:

x+1/2x=5-1/5x

combine like terms on left side

3/2x=5-1/5x

add 1/5x on both sides

17/10x=5

multiply by 10 on both sides to get rid of fraction

17x=50

divide 17 on both sides witch leaves

x=50/17

If Brainiest is earned its Greatly Appreciated

6 0
2 years ago
Read 2 more answers
What is 3st^4-7st for z
Andreyy89
I do not see the letter z in the equation, if there is no mistake the z would be 0
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3 years ago
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