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Lilit [14]
4 years ago
9

Very canfused need help

Mathematics
2 answers:
Dvinal [7]4 years ago
8 0
First, find 1/2 of 3. That is 1.5 gallons. Since there are 4 quarts in a gallon, do 1.5*4 to get 6.
Softa [21]4 years ago
5 0
If 1/2 0f 3 gallons was used then the remainding gallon would be 1.5 gallons.
and 1.5 gallons is equal to 6 quarts so he used 6 quarts 

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Is 36 = (6 + 6)x + 12<br><br> A. commutative<br> B. distributive<br> C. identity<br> D. associative
mamaluj [8]
Nfndndndbdbdbdbdbdbdbvdbddbbdbddhdjdjdbdjdjdndjdjdhdjdjdjdhdjdjdjdjdjdjdjfjfjdi
6 0
3 years ago
Read 2 more answers
Estimate the integral ∫6,0 x^2dx by the midpoint estimate, n = 6
Anettt [7]
Splitting up the interval [0, 6] into 6 subintervals means we have

[0,1]\cup[1,2]\cup[2,3]\cup\cdots\cup[5,6]

and the respective midpoints are \dfrac12,\dfrac32,\dfrac52,\ldots,\dfrac{11}2. We can write these sequentially as {x_i}^*=\dfrac{2i+1}2 where 0\le i\le5.

So the integral is approximately

\displaystyle\int_0^6x^2\,\mathrm dx\approx\sum_{i=0}^5({x_i}^*)^2\Delta x_i=\frac{6-0}6\sum_{i=0}^5({x_i}^*)^2=\sum_{i=0}^5\left(\frac{2i+1}2\right)^2

Recall that

\displaystyle\sum_{i=1}^ni^2=\frac{n(n+1)(2n+1)}6
\displaystyle\sum_{i=1}^ni=\frac{n(n+1)}2
\displaystyle\sum_{i=1}^n1=n

so our sum becomes

\displaystyle\sum_{i=0}^5\left(\frac{2i+1}2\right)^2=\sum_{i=0}^5\left(i^2+i+\frac14\right)
=\displaystyle\frac{5(6)(11)}6+\frac{5(6)}2+\frac54=\frac{143}2

8 0
3 years ago
Which two of the following are not characteristics of surveys?
vovikov84 [41]

Answer:

B and D

Step-by-step explanation:

Surveys are only tested with one group.

3 0
3 years ago
Please explain and show work ( I WILL MARK BRAINLIEST)
liberstina [14]

Answer:

The answer is A x=-6

Step-by-step explanation:

2/3 times -6 = -4.

-4+5=1

8 0
3 years ago
What would the missing coordinate be if there was an inverse relationship between points (12,3) and (x,9)
Paraphin [41]

Answer:

4.

Step-by-step explanation:

inverse proportion:

12/3=x/9.

3x3=9 therefore 12/3 which is 4.

The missing coordinate is 4.

Hope this helps plz hit the crown :D

5 0
3 years ago
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