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r-ruslan [8.4K]
2 years ago
7

Resolva a expressão: 6÷3+2•7

Mathematics
2 answers:
lions [1.4K]2 years ago
7 0
The answer is 16…
because 6 •|• 3 is 2 and 2•7 is 14 then add them together. 2+14=16
NARA [144]2 years ago
4 0

Step-by-step explanation:

What is the molar mass of an element?

the total number of particles in one gram of the element

the mass of 6.02 x 1023 representative particles of the element

the number of amus (atomic mass units) in 6.02 x 1023 moles of the element

1.0 gram divided by the atomic weight of the element

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qwelly [4]
Check picture for working out
8 0
3 years ago
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Find the length of the curve. R(t) = 7t, 3 cos(t), 3 sin(t) , −2 ≤ t ≤ 2
Leviafan [203]

we are given

r(t)=(7t,3cos(t),3sin(t))

we can find x , y and z

x=7t,y=3cos(t),z=3sin(t))

now, we can use arc length formula

L=\int\limits^a_b {\sqrt{(x')^2+(y')^2+(z')^2} } \, dt

now, we can find derivative

x'=7,y'=-3sin(t),z'=3cos(t))

now, we can plug values

and we get

L=\int _{-2}^2\sqrt{7^2+\left(-3\sin \left(t\right)\right)^2+\left(3\cos \left(t\right)\right)^2}dt

L=\int _{-2}^2\sqrt{7^2+9}dt

=\sqrt{58}\cdot \:2-\left(-2\sqrt{58}\right)

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8 0
4 years ago
Please help asap (17 points) thankyou
masha68 [24]

Answer:

median: 28

mean: 55 + 25 + 28 + 42 + 25 = 175    175 / 5= 35

Step-by-step explanation:

median is the number that is in the middle of all of the other numbers

mean is when you add all of the numbers together and then divide the total depending how many numbers you added together.

5 0
3 years ago
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PLEASE HELP ME SOMEONE
n200080 [17]

Answer:

Option 2: 27 is the correct answer.

Step-by-step explanation:

Given functions are:

f(x) = x^2-2\\g(x) = 4f(x) - 1

As we can see that the function g(x) in written in terms of f(x), first of all we have to find g(x) by putting the value of f(x) in g(x)

So putting f(x) = x^2-2 in g(x)

g(x) = 4(x^2-2)-1\\= 4x^2-8-1\\=4x^2-9

As g(-3) has to be found, putting x=-3 in g(x)

g(-3) = 4(-3)^2-9\\= 4(9)-9\\=36-9\\=27

Hence

Option 2: 27 is the correct answer.

5 0
3 years ago
Faith paid $25.10 for a newspaper ad. The newspaper charged $5.02 for 3 lines of print. How many lines was the ad?
adell [148]
The ad was around 15 lines.
25.10/5.02 = 5
and then 5 * 3 = 15 lines
3 0
4 years ago
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