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Rina8888 [55]
3 years ago
5

PLEASE HELP ME QUICKLY

Mathematics
2 answers:
mr Goodwill [35]3 years ago
8 0

Answer:

It would be 6.8

zhuklara [117]3 years ago
4 0
I believe that the answer would be 6.8
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Help pls im on a timed test<br><br> * For people who search it up (3x)^3=3^1
wel

Answer:

  • Option D. x = -2

Step-by-step explanation:

<u>Given equation:</u>

  • (3^x)^3 = 3^1.
  • (3^3^+^(^-^2^)) = 3^1
  • = 3^1.

<u>Your answer will be Option D.</u>

6 0
2 years ago
What does 2 1/4 - 1 2/3?
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3 years ago
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Question 2b only! Evaluate using the definition of the definite integral(that means using the limit of a Riemann sum
lara [203]

Answer:

Hello,

Step-by-step explanation:

We divide the interval [a b] in n equal parts.

\Delta x=\dfrac{b-a}{n} \\\\x_i=a+\Delta x *i \ for\ i=1\ to\ n\\\\y_i=x_i^2=(a+\Delta x *i)^2=a^2+(\Delta x *i)^2+2*a*\Delta x *i\\\\\\Area\ of\ i^{th} \ rectangle=R(x_i)=\Delta x * y_i\\

\displaystyle \sum_{i=1}^{n} R(x_i)=\dfrac{b-a}{n}*\sum_{i=1}^{n}\  (a^2 +(\dfrac{b-a}{n})^2*i^2+2*a*\dfrac{b-a}{n}*i)\\

=(b-a)^2*a^2+(\dfrac{b-a}{n})^3*\dfrac{n(n+1)(2n+1)}{6} +2*a*(\dfrac{b-a}{n})^2*\dfrac{n (n+1)} {2} \\\\\displaystyle \int\limits^a_b {x^2} \, dx = \lim_{n \to \infty} \sum_{i=1}^{n} R(x_i)\\\\=(b-a)*a^2+\dfrac{(b-a)^3 }{3} +a(b-a)^2\\\\=a^2b-a^3+\dfrac{1}{3} (b^3-3ab^2+3a^2b-a^3)+a^3+ab^2-2a^2b\\\\=\dfrac{b^3}{3}-ab^2+ab^2+a^2b+a^2b-2a^2b-\dfrac{a^3}{3}  \\\\\\\boxed{\int\limits^a_b {x^2} \, dx =\dfrac{b^3}{3} -\dfrac{a^3}{3}}\\

4 0
2 years ago
In a class, every student knows French or German (or both). 15 students know French, and 17 students know German. What is the la
Marina CMI [18]

Solution:

we are given that

In a class, every student knows French or German (or both).

15 students know French, and 17 students know German.

Suppose there are x student who knows both French and German.

Then Total number of student in the class will be (15+17-x)=32-x

But to guess the largest possible number of student in the class we can assume x=0

Hence the largest Possible number of Student in the class=32

6 0
3 years ago
It is 4:12 p.m. Emma's mom will be home from work in 70 minutes, and Emma has gymnastics lessons at 6:00 p.m. How much time will
Mademuasel [1]
We know that her mom will be home in 70 minutes and if its 4:12 then that means that her mom will be home at 5:22 because 70 minutes is 10 minutes more than an hour. If her gymnastics lessons are at 6:00 then she has 38 minutes in-between the time her mom gets home and her gymnastics lesson.

Hope this helped!
8 0
3 years ago
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