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zlopas [31]
3 years ago
7

the edges of a cube are 5 centimeters each and the diagonal of a face is approximately 7 centimeters. what is the approximate ar

ea of the cross section passing through the diagnose of opposite faces of this cube
Mathematics
1 answer:
ASHA 777 [7]3 years ago
7 0

Answer:

Got you

Step-by-step explanation:

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Which is the polynomial function of lowest degree with rational real coefficients, a leading coefficient of 3 and roots StartRoo
anastassius [24]

Answer:

a) f(x)=3x^{3}-6x^{2}-15x+30

Step-by-step explanation:

1) In this question we've been given "a", the leading coefficient. and two roots:

x_{1}=\sqrt{5}\:x_{2}=2

2) There's a theorem, called the Irrational Theorem Root that states:

If one root is in this form x'=\sqrt{a}+b  then its conjugate x''=\sqrt{a}-b. is also a root of this polynomial.

Therefore

x_3=-\sqrt{5}

3) So, applying this Theorem we can rewrite the equation, by factoring. Remembering that x is the root. Since the question wants it in this expanded form then:

f(x)=3(x-\sqrt{5})(x+\sqrt{5})(x-2)\Rightarrow 3x^{3}-6x^{2}-15x+30

4 0
3 years ago
Read 2 more answers
How can I graph that
REY [17]
Slope:2
y intercept: 5
so if your test has like a graph the dot will be at y=5
5 0
3 years ago
Graph the line<br>y-3x= 3​
Mnenie [13.5K]
(-1, 0) (0, 3)
these are the coordinates for the graph
7 0
3 years ago
Find the area of this figure. Brainliest to first correct answer. Tysm
larisa [96]
Area of Triangle:
A = 1/2 bh = 1/2 (5)(12) = 30 m^2

Area of semicircle:
A = 1/2 π r^2 = 1/2 π 6^2 = 18<span>π m^2

Area of figure = </span>Area of semicircle + Area of Triangle 
Area of figure = 18π  + 30 m^2

Answer is C.
18π  + 30 m^2
5 0
3 years ago
Read 2 more answers
Please help asap!!!! 53 points!
AfilCa [17]
The easiest way is to graph it based upon the slope (m) and y-intercept (b), in the standard slope-intercept form: y = m (x) + b.
The line above intercepts the y-axis at y = -2, which is b. The slope (m) = rise/run = (y2-y1)/(x2-x1 ); so for the point (-4, 2) to (-6, 4) is:
(4-2)/(-6--4) = 2/(-6+4) = 2/-2 = -1.
So one form of the equation would be:
y = -1x - 2
Now the other form of an equation is point-slope: y-k = m (x-h), where the point is at (h, k)
and if we pick -5 for x (bc 5 it listed in 3 of the answers), the y at x=-5 looks like around +3
so we get: y-k = -1 (x--5)...
y-3 = -(x+5)... therefore D) is the correct answer:
8 0
4 years ago
Read 2 more answers
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