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Rus_ich [418]
2 years ago
8

David told Luis that he was going to make a triangle

Mathematics
1 answer:
raketka [301]2 years ago
7 0

Answer:

Luis.

Step-by-step explanation:

180-90-20-40= 30

A triangle's angles have to make up 180 degrees, thus Luis is correct.

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Write a subtraction that will give the same difference as 15-7
Georgia [21]
15 - 7 = 8 so there are many you can do like:
16 - 8 = 8
20 - 12 = 8
22 - 14 = 8
and so on, there are many.




8 0
3 years ago
By driving 8 mph faster than Bob, John can make a 230 mile trip in one half hour less. How fast does Bob drive on the trip? Roun
____ [38]

Answer: The speed of Bob is 56.8 km/hr.

Step-by-step explanation:

Let the speed of Bob be 'x'.

Let the speed of John be 'x-8'.

Distance covered = 230 miles

time = 1\dfrac{1}{2}=\dfrac{3}{2}\ hr

According to question, we get that

\dfrac{230}{x}-\dfrac{230}{x+8}=\dfrac{3}{2}\\\\230\dfrac{x+8-x}{x(x+8)}=\dfrac{3}{2}\\\\\dfrac{230\times 8}{x^2+8x}=\dfrac{3}{2}\\\\\dfrac{1840}{x^2+8x}=\dfrac{3}{2}\\\\1840\times 2=3x^2+24x\\\\3680=3x^2+24x\\\\3x^2+24x-3680=0\\\\x\approx 56.8\ km/hr

Hence, the speed of Bob is 56.8 km/hr.

6 0
3 years ago
You can take bus 65 or bus 79 to get to work. you take the first bus that arrives. the probability that bus 65 arrives first is
navik [9.2K]
I dont get how to work this one out give me a secod
7 0
3 years ago
A two-digit locker combination is made up of non-zero digits and no digit is repeated in any combination.
kondor19780726 [428]

Answer:

it's C) 1/18

hope this helps

5 0
2 years ago
2(-3x+4)=5x+2<br> solve for x
lara [203]

Answer is 6/11

Explanation :-

2( - 3x + 4) = 5x + 2

Now open left side brackets and multiply 2 with each on left,

➵ - 6x + 8 = 5x + 2

Now, bring the common values together for easier calculation.

➵8 - 2 = 5x + 6x

➵6 = 11x

➵ \frac{6}{11} = x

As we cant divide 6/11 , we write it as it is.

Therefore, <em>value of x is <u>6/11</u></em>

4 0
2 years ago
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