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ioda
3 years ago
5

Select the expression that represents the following statement: multiply the difference of 5 and 2 by 7, and then add 6.

Mathematics
1 answer:
kondor19780726 [428]3 years ago
7 0

Answer:

27

Step-by-step explanation:

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Classify each system. the system shown below is . x + 3y = 4 3x + 9y = 12 the system shown below is . 3x – 4y = 12 6x – 8y = 21
crimeas [40]

The first one is consitent and dependent

The second one is inconsistent

The third one is consistent and independent

3 0
3 years ago
Read 2 more answers
Convert the integral below to polar coordinates and evaluate the integral.
White raven [17]

I suppose the integral is

\displaystyle\int_0^5\int_y^{\sqrt{25-y^2}} xy\,\mathrm dx\,\mathrm dy

The integration region corresponds to a sector of a cirlce with radius 5 subtended by a central angle of π/4 rad. We can capture this region in polar coordinates by the set

R=\left\{(r,\theta)\mid0\le r\le5,0\le\theta\le\dfrac\pi4\right\}

Then x=r\cos\theta, y=r\sin\theta, and \mathrm dx\,\mathrm dy=r\,\mathrm dr\,\mathrm d\theta. So the integral becomes

\displaystyle\iint_Rxy\,\mathrm dx\,\mathrm dy=\int_0^{\pi/4}\int_0^5r^3\sin\theta\cos\theta\,\mathrm dr\,\mathrm d\theta=\frac{625}{16}

7 0
3 years ago
What expression is equivalent to 3-(-2+5)
maxonik [38]

Answer:

Ok ok, I see. So the answer is -9.

Step-by-step explanation:

We know the expresion is:

-3(-2+5)

We need to distrubute the -3 to what is in the parthese.

When I say distribute, basically you need to multiply the numbers inside the parethese by -3. So we can think of it as:

-3*-2=6

and:

-3*5=-15

Which we can rewrite as:

(6-15)

Subtract 15 from 6 and you get -9:

6-15=-9

Sorry hope this helps!

4 0
2 years ago
A leaking bucket is filled to 3/4 capacity. After some time, 1/2 of the water has leaked out. What fraction of the water leaked
Ilia_Sergeevich [38]
C. 3/8 is the answer
3 0
3 years ago
An airplane traveling from chicago to LA can fly at a rate of 6 miles per minute,how many hours does it take to travel 1,200 mil
Allisa [31]

Answer:

about 3 hours and 33 mins

Step-by-step explanation:

8 0
2 years ago
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