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noname [10]
3 years ago
6

Simplify the following expression. 3x^4+2x^3-5x^2 +4x^2+6x-2x - 3x^3 +7X^5-3x?

Mathematics
1 answer:
horrorfan [7]3 years ago
8 0
Your answer is 7

5
+
3

4
−

3
−

2
+
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A taxi service charges $4.50 to pick someone up and then $0.75 per mile during the ride.
Umnica [9.8K]
Part A : y=$0.75m+$4.50
Part B : $8.25
8 0
3 years ago
Two angles are complementary. one contains 30° more than the other. find both angles. the measures of the angles are degrees.
77julia77 [94]
Let one angle be x.

Other angle = x + 30°

Given, angles are complementary;

x + x + 30 = 90

2x = 60

x = 30°

Hence, the angles are 30° and 60°.
5 0
3 years ago
IR = V<br> (solve for R)
Marianna [84]

Answer:

The solution of the equation is  R = \frac{V}{i}.

Step-by-step explanation:

The previous equations is for the Ohm's Law, which states that current (i), measured in amperes, is directly proportional to the voltage (V), measured in volts:

V \propto i

The complete formula is:

I\cdot R = V (1)

Where R is the electric resistance, measured in ohms.

Solving for R means that we need to clear R within the formula, a process that will be presented step-by-step:

1) V = i\cdot R Given

2) V\cdot i^{-1} = (i\cdot R)\cdot i^{-1} Compatibility with multiplication.

3) V\cdot i^{-1} = R\cdot (i\cdot i^{-1}) Commutative and associative properties.

4) V\cdot i^{-1} = R\cdot 1 Existence of multiplicative inverse.

5) V\cdot i^{-1} = R Modulative property.

6) R = \frac{V}{i} Definition of division/Symmetric property/Result

The solution of the equation is  R = \frac{V}{i}.

7 0
3 years ago
Can someone help? Thanks! :)
sukhopar [10]

Answer:

<em>The second figure ( rectangle ) has a longer length of it's diagonal comparative to the first figure ( square )</em>

Step-by-step explanation:

We can't confirm the length of these diagonals based on the appearance of the figure, so let us apply Pythagorean Theorem;

This diagonal divides each figure ( square + rectangle ) into two congruent, right angle triangles ⇒ from which we may apply Pythagorean Theorem, where the diagonal acts as the hypotenuse;

5^2 + 5^2 = x^2 ⇒ x is the length of the diagonal,

25 + 25 = x^2,

x^2 = 50,

x = √50

Now the same procedure can be applied to this other quadrilateral;

3^2 + 7^2 = x^2 ⇒ x is the length of the diagonal,

9 + 49 = x^2,

x^2 = 58,

x = √58

<em>Therefore the second figure ( rectangle ) has a longer length of it's diagonal comparative to the first figure ( square )</em>

5 0
3 years ago
You are to run a conduit diagonally across a parking lot that is 200 ft long and 60 ft wide. How much conduit will you need to c
torisob [31]

Answer:209ft

Step-by-step explanation:

We let y be the unknown value, which is length of conduit.

200^2 + 60^2=y^2

40000 + 3600=y^2

43600=y^2

Square both side

y= sqrt(43600)

y= 208.8061 ft

y=209 ft

3 0
3 years ago
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