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3 years ago

Norma owns a rectangular lot of land with

Mathematics

1 answer:

Vinvika [58]3 years ago

6 0

Answer:B

Step-by-step explanation:

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What is the answer to the problem: Solve<br> (The square root of 2x-7) = 7?

quester [9]

The equation is
$\sqrt{2x-7}=7\\\text{Elevating to 2 the two sides of the equation we get:}\\2x-7=49\\\text{Therefore:}\\2x=49+7=56\\x=\frac{56}{2}=28\\\text{Solution : }x=28$

4 0

2 years ago

Between what pair of numbers is the product of 289 and 7

algol13

The product of 289 and 7 is 2023

So 2023 is in between the pair of numbers 2022 and 2024

or even in between the pair of numbers 2020 and 2025. You can make a lot of pairs, haha.

6 0

2 years ago

Read 2 more answers

Which function below is shown on the graph?

Vika [28.1K]

B.

You can tell this by the shifts from the base graph of 2^x

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3 years ago

Read 2 more answers

F(x, y, z) = yzexzi + exzj + xyexzk,

Ghella [55]

$\nabla f(x,y,z)=\mathbf F(x,y,z)\iff\dfrac{\partial f}{\partial x}\,\mathbf i+\dfrac{\partial f}{\partial y}\,\mathbf j+\dfrac{\partial f}{\partial z}\,\mathbf k=yze^{xz}\,\mathbf i+e^{xz}\,\mathbf j+xye^{xz}\,\mathbf k$

$\dfrac{\partial f}{\partial x}=yze^{xz}$
$\implies f(x,y,z)=\dfrac{yz}ze^{xz}+g(y,z)=ye^{xz}+g(y,z)$

$\dfrac{\partial f}{\partial y}=e^{xz}=e^{xz}+\dfrac{\partial g}{\partial y}$
$\implies\dfrac{\partial g}{\partial y}=0\implies g(y,z)=h(z)$

$\dfrac{\partial f}{\partial z}=xye^{xz}=xye^{xz}+\dfrac{\mathrm dh}{\mathrm dz}$
$\implies\dfrac{\mathrm dh}{\mathrm dz}=0\implies h(z)=C$

$f(x,y,z)=ye^{xz}+C$

$\mathbf r(t)=(t^2+5)\,\mathbf i+(t^2-1)\,\mathbf j+(t^2-5)\,\mathbf k$
$\implies\mathbf r(0)=5\,\mathbf i-\mathbf j-5\,\mathbf k$
$\implies\mathbf r(5)=30\,\mathbf i+24\,\mathbf j+20\,\mathbf k$

By the gradient theorem, we have for any path $\mathcal C$ originating at the point (5, -1, -5) and terminating at the point (30, 24, 20),

$\displaystyle\int_{\mathcal C}\mathbf F\cdot\mathrm d\mathbf r=f(\mathbf r(5))-f(\mathbf r(0))=f(30,24,20)-f(5,-1,-5)$
$\implies\displaystyle\int_{\mathcal C}\mathbf F\cdot\mathrm d\mathbf r=24e^{600}+e^{-25}$

4 0

3 years ago

Tom is 4 more that’s twice Andrews age. Sara is 8 less than 5 times andrews age. If Tom and sara are twins , how old is Andrew

dangina [55]

Andrew is 4 years old

Andrew (4) x 2 = 8 + 4 = 12 (Tom)
Andrew (4) x 5 = 20 - 8 = 12 (Sara)

5 0

2 years ago