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Ivan
3 years ago
9

s = 6t² + 3t + 7, 0 ≤ t ≤ 2 Find the body's displacement and average velocity for the given time interval.

Mathematics
1 answer:
Lapatulllka [165]3 years ago
4 0

Answer:

I hope I help you

...........

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The difference of two numbers is 8. When twice the first number is added to three times the second number, the result is 51. Wha
Naya [18.7K]
The answer is b. 15 & 7
8 0
3 years ago
Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.
Mariulka [41]

Answer:

The answer is 55 6/9, but when simplified, it is 55 1/3

4 0
3 years ago
Joe worked 5 days this week and earned $1,100. He paid 6% in State tax. What is Joe's net pay?
Nat2105 [25]

Answer:

1034$

Step-by-step explanation:

1100/100×6=66$

1100-66=1034$

4 0
2 years ago
The second term in a geometric series is 10, and the seventh term is 10,240. Find the sum of the first six terms.
just olya [345]

Answer:

The sum of the first 6 terms is 3,412.5.

Step-by-step explanation:

The second term of the geometric series is given by:

a_{2}=a_{1}*r

Where a1 is the first term and r is the common ratio. The seventh term can be written as a function of the second term as follows:

a_{7}=a_{1}*r^{6} \\a_{7}=a_{2}*r^{5} \\10,240 = 10*r^{5}\\r=\sqrt[5]{1024} \\r = 4

The sum of "n" terms of a geometric series is given by:

a_{1} = \frac{10}{4} = 2.5\\S_{n}=a_{1}(\frac{r^{n}-1 }{r-1})\\S_{6}=2.5(\frac{4^{6}-1 }{4-1})\\S_{6}=3,412.5

The sum of the first 6 terms is 3,412.5.

5 0
3 years ago
Maths * Henry is mixing concrete. To make concrete he needs to mix cement, sand and gravel in the ratio 4 : 3 : 1 by weight. Hen
Mice21 [21]

Answer:

His 55 kg of cement is 5 kg short of the 60 kg he needs.

Step-by-step explanation:

Let r be a ratio useful in determining how much of each ingredient Henry needs:

4/8 of the mix is cement, 3/8 is sand and 1/8 is gravel.

4/8 of the total 120 kg must then be 60 kg made up of cement;

3/8                                 must then be 45 kg made up of sand; and

1/8                                   must then be 15 kg made up of gravel

His 55 kg of cement is 5 kg short of the 60 kg he needs.

8 0
3 years ago
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