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Gelneren [198K]
3 years ago
8

How long would it take the two trains to meet?

Mathematics
1 answer:
tiny-mole [99]3 years ago
7 0

Answer: 2.5 hours.

Step-by-step explanation:

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Write an explicit formula for a_na
Masja [62]

Explicit formula for the sequence 29,20,11....... is a_n=38-9n

Given :

term of the sequence 29, 20, 11, ...

We need to find out the formula for the nth term of the given sequence

Lets find out whether the given sequence is arithmetic or geometric

In the given sequence , common difference is 9

20-29=-9\\11-20=-9

we can say difference =-9

General explicit formula

a_n=a_1+(n-1)d

where a1 is the first term

common difference d=-9

substitute the values

a_n=a_1+(n-1)d\\a_n=29+(n-1)(-9)\\a_n=29-9n+9\\a_n=38-9n

Explicit formula for the sequence 29,20,11....... is a_n=38-9n

Learn more :  brainly.com/question/23243640

5 0
3 years ago
When you are dividing fractions, what do you need to do with the<br> second fraction in the problem?
seropon [69]
To divide fractions you swap the numerator & denominator on the second fraction, the multiply the new numerators togeather & multiply the newdenominator together to get the answer. example attached.

8 0
3 years ago
Given the diagram, as labeled, at the right.Find x.<br> A) 4<br> B) 8<br> C) 4√2<br> D) 8√2
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Answer:

cos45=×/4

\cos(45 )  = x  \div 4 \sqrt{2}

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If the first step in the solution of the equation -8 - 7x = -5x - 10 is "add 10," then what should the next step be?
dolphi86 [110]
-8 - 7x = -5x - 10....add 10 to both sides
2 - 7x = -5x ......NEXT STEP.....add 7x to both sides
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if a recipe for cookies calls for 3/4 of a cup of sugar, and you want to quadruple the recipe, how many cups of sugar will you n
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You will need 3 cups of sugar.
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3 years ago
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