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Elina [12.6K]
2 years ago
14

Solve: − <− + 7( − 2) (show your work)

Mathematics
1 answer:
Rashid [163]2 years ago
3 0

Answer:

hope it helps.

<h2>stay safe healthy and happy...</h2>

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The radius, R, of a sphere, is 6.3cm. Calculate the sphere's volume, V.
sleet_krkn [62]

Answer:

V = 1046.9

Step-by-step explanation:

The equation for volume is (4/3)pi r^3

substitute 3.14 in for pi and 6.3 in for r so (4/3)*3.14*6.3^3

6 0
2 years ago
43x+ 67y = -24 and 67x + 43y = 24 solve
aleksandrvk [35]

Answer:

  (x, y) = (1, -1)

Step-by-step explanation:

We'll write these equations in general form, then solve using the cross-multiplication method.

  43x +67y +24 = 0

  67x +43y -24 = 0

∆1 = (43)(43) -(67)(67) = -2640

∆2 = (67)(-24) -(43)(24) = -2640

∆3 = (24)(67) -(-24)(43) = 2640

These go into the relations ...

  1/∆1 = x/∆2 = y/∆3

  x = ∆2/∆1 = -2640/-2640 = 1

  y = ∆3/∆1 = 2640/-2640 = -1

The solution is (x, y) = (1, -1).

_____

<em>Additional comment</em>

The cross multiplication method isn't taught everywhere. The attachment explains a bit about it. Our final relationship changes the order of the fractions to 1, x, y from x, y, 1. That way, we can use the equation coefficients in their original general-form order. (The fourth column in the 2×4 array of coefficients is a repeat of the first column.)

4 0
2 years ago
Which expression is equivalent to (a^8)^4
crimeas [40]
The answer is D. Use the power of powers rule and multiply the two exponents together.
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3 years ago
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The equation of function f is f(x)=-3/2x+120. the domain of function f is 0 greater than or equal to x greater than or equal to
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nanklnvccvndm

Step-by-step explanation:

annsnnxnxnznakka

6 0
2 years ago
What is another way of writing the following expression?
Nat2105 [25]
A. (3x7)+(3x4)
should be the correct one bc the other options dont get the same answer in the end
4 0
2 years ago
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