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3 years ago

Pls help me on this 1 sum 1 its important

Mathematics

2 answers:

kaheart [24]3 years ago

6 0

Answer:

First option

A. y = 3.15 + 2.75(x - 1)

Step-by-step explanation:

d = 5.9 - 3.15 = 2.75

f(1) = 3.15

so the rule:

y = f(1) + d(n - 1)

y = 3.15 + 2.75(x - 1)

Mashutka [201]3 years ago

4 0

A.y=3.15+2.75(x-1) because if you substitute the x values in the equation you will get all the y values

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Mike runs 12.6 miles in 3.5 hours. How fast does he run in miles per hour?

zlopas [31]

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3 years ago

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Please help me im new idk how to do any of this.Please help i suck at math

FromTheMoon [43]

Answer:

x=85

Step-by-step explanation:

Hope this helps you :))

(Hope it doesn't get reported becuase it "doesn't have an explanation of how it's right") Have a blessed day ^-^

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3 years ago

Calculate the flux of the vector field F⃗ (x,y,z)=(exy+9z+4)i⃗ +(exy+4z+9)j⃗ +(9z+exy)k⃗ through the square of side length 3 wit

ikadub [295]

The square (call it $S$ ) has one vertex at the origin (0, 0, 0) and one edge on the y-axis, which tells us another vertex is (0, 3, 0). The normal vector to the plane is $\vec n=\vec\imath-\vec k$ , which is enough information to figure out the equation of the plane containing $S$ :

$(x\,\vec\imath+y\,\vec\jmath+z\,\vec k)\cdot(\vec\imath-\vec k)=0\implies x-z=0\implies z=x$

We can parameterize this surface by

$\vec s(x,y)=x\,\vec\imath+y\,\vec\jmath+x\,\vec k$

for $0\le x\le\frac3{\sqrt2}$ and $0\le y\le3$ . Then the flux of $\vec F$ , assumed to be

$\vec F(x,y,z)=(e^{xy}+9z+4)\,\vec\imath+(e^{xy}+4z+9)\,\vec\jmath+(9ze^{xy})\,\vec k$ ,

$\displaystyle\iint_S\vec F(x,y,z)\cdot\mathrm d\vec S=\iint_S\vec F(\vec s(x,y))\cdot\vec n\,\mathrm dx\,\mathrm dy$

$=\displaystyle\int_0^3\int_0^{3/\sqrt2}\left((4+e^{xy}+9x)\,\vec\imath+(9+e^{xy}+4x)\,\vec\jmath+(e^{xy}+9x)\,\vec k\right)\cdot(\vec\imath-\vec k)\,\mathrm dx\,\mathrm dy$

$=\displaystyle\int_0^3\int_0^{3/\sqrt2}4\,\mathrm dx\,\mathrm dy=\boxed{18\sqrt2}$

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3 years ago

5•x+5 - (5x + 25)

sukhopar [10]

Ok, so you have your equation, 5·x+5-(5x+25).
First, do the prathases, so you have, 5x+5-5x-25.(5·x also means 5x)
Now, you need to combine like terms, and through that the xs cancel out, so you are left with -20 as you answer.

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3 years ago

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Can someone help me?

qaws [65]

Answer:

Your answer is C. 1/2 (16*6) = 48 square feet

Step-by-step explanation:

The formula to find the area of a triangle is A = b*h/2 (base times height divided by half)

First you need to multiply the base (6) by the height (16).

6*16 is 96.

Now you divide 96 by 2 or cut it in half.

96/2 (or cut in half) is 48.

Therefore your answer is C

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3 years ago