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Amanda [17]
3 years ago
15

Which of the following equations are identities? Check all that apply.

Mathematics
1 answer:
steposvetlana [31]3 years ago
4 0

Answer:

B.

Step-by-step explanation:

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Whats the answer to 3+2h=7
Brut [27]

Greetings! Hope this helps!

Answer

3 + 2h = 7

-3           -3

2h = 4

/2    /2

h = 2

Have a good day!

_______________

A brainliest would help tons! :D

5 0
3 years ago
Read 2 more answers
Consider f and c below. f(x, y) = (3 + 4xy2)i + 4x2yj, c is the arc of the hyperbola y = 1/x from (1, 1) to 3, 1 3 (a) find a fu
irga5000 [103]
We want to find a scalar function f(x,y) such that \nabla f(x,y)=\mathbf f(x,y)=\dfrac{\partial f}{\partial x}\,\mathbf i+\dfrac{\partial f}{\partial y}\,\mathbf j.
So we need to have
\dfrac{\partial f}{\partial x}=3+4xy^2
Integrating both sides with respect to x gives
f(x,y)=3x+2x^2y^2+g(y)
Differentiating with respect to y gives
\dfrac{\partial f}{\partial y}=4x^2y+\dfrac{\mathrm dg}{\mathrm dy}=4x^2y\implies\dfrac{\mathrm dg}{\mathrm dy}=0\implies g(y)=C
So we find that
f(x,y)=3x+2x^2y^2+C
By the fundamental theorem of calculus, we then know the line integral depends only on the values of f(x,y) at the endpoints of the path. Therefore

\displaystyle\int_{\mathcal C}\mathbf f\cdot\mathrm d\mathbf r=f\left(3,\frac13\right)-f(1,1)=11-5=6
4 0
4 years ago
Can someone please help me with this
alexgriva [62]
3 lightest sharks
= 3 3/8 + 3 3/8 + 3 3/8
=  9 9/8
=  10 1/8
7 0
3 years ago
A biologist samples and measures the length of the fish in a lake. What is the level of measurement of the data?
astraxan [27]

Answer:

A biologist samples and measures the length of the fish in a lake. What is the level of measurement of the data? Select the correct answer below:

nominal

ordinal

interval

ratio

6 0
3 years ago
Ben had two copies of the same poster in different sizes. Both posters are in the shape of a square. The side length of the two
omeli [17]

Answer:

\huge\underline{\red{A}\blue{n}\pink{s}\purple{w}\orange{e}\green{r} -}

the question states that a person named Ben has two copies of the same poster having different sizes , provided they both are squares !

further , we've been given that the side length of the posters are in the ratio of 3:7 and the perimeter of the smaller posted is 27 cm .

We've been asked to find the perimeter of the bigger poster !

so let's start ~

let\: the \: length \: of \: the \: smaller \: poster \: be \: 3x \\  \\ let \: the \: length \: of \: the \: bigger \: poster \: be \: 7x \\  \\ now \: , \:  \\  \\ perimeter \: of \: square = 4 \times side \\  \\ \implies \: perimeter \: of \: shorter \: square = 4 \times 3x \\  \\ \implies \: 27 = 3x \\  \\ x =  \cancel\frac{27}{3}  \\  \\ \implies\red{\boxed{ \: x = 9 \: cm}}

now ,

side \: length \: of \: bigger \: square = 7x \\  \\ \implies \: 7 \times 9 = 63 \: cm \\  \\ \therefore \: perimeter \: of \: bigger \: square = 4 \times 63 \\  \\ \bold\pink{\implies \: 252 \: cm}

hope helpful :D

4 0
2 years ago
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