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3 years ago

X = 1. 4 2. 7 3. 9 (Special Segments)

Mathematics

1 answer:

iris [78.8K]3 years ago

7 0

Answer:

Step-by-step explanation:

The total of the line in the circle is 9
x + 2 = 9
x = 9 - 2
x = 7

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Convert 12,5% to a decimal fraction.

Stolb23 [73]

Decimal fractions don't exist. Do you mean convert to a decimal and a fraction?

5 0

4 years ago

If<br>A = i +3j -2K and B=4i-2j+4k<br>Find (2A+B).(A-2B)

Marizza181 [45]

GIVEN :

a = 1/√10 ( 3i + k) and

b = 1/7 ( 2i + 3j - 6k)

TO FIND :

( 2a- b) . [ ( a x b ) x ( a + 2b)]

SOLUTION :

◆Going with the equation given,

( 2a - b) . [ ( a x b ) x ( a + 2b)]

= (2a - b) [( a×b×a) + 2(a×b)×b]

◆BAC - CAB RULE,

A×B×C = B( A.B ) - C(A.B )

= (2a- b ) [ (b (a.a ) - a (a.b ) + 2b ( a.b) -2b (a.b]

Solving further

= (2a - b )(b - 2a)

= -4a.a -b.b

=-5.

Answer:

( 2 - b) . [ ( a x b ) x ( a + 2b)] = -5

Hoped I helped

8 0

3 years ago

Find the x-intercepts/roots of the polynomial function. Also, identify the degree of the polynomial

Mrac [35]

Answer:

Step-by-step explanation:

roots=-2,-1,1,3

critical points=(-1.5,-3),(0,6),(2,-13)

absolute minimum=-13

End behavior :approaches +infinity

Relative max=6 at (0,6)

Relative min. =-3 at (-1.5,-3)

and -13 at (2,-13)

interval of increase=(-1.5,0)∪(2,∞)

interval of decrease=(-∞,-1.5)∪(0,4)

roots=-1,2

critical points=(0.5,10.5),(4,-10.5)

Abs.max/abs.min=not defined

End behavior:-∞ to +∞

Relative max=10.5

Relative min=-10.5

interval of increase=(-∞,0.5) ∪ (4,∞)

interval of decrease=(0.5,4)

4 0

3 years ago

the description of a TV is based on the diagonal length. if the height of a TV is 10 inches and the width is 7 inches, what is t

borishaifa [10]

To calculate it use pythagoras: a^2+b^2=c^2
7^2+10^2=49+100=149

calculate the square root: $\sqrt{149}=12.2$
so the diagonal is about 12.2 inches long

8 0

3 years ago

What is the mean for this list of numbers? 19, 22, 24, 45

STALIN [3.7K]

Answer:

27.5

Step-by-step explanation:

To find the mean you basically just add all of the numbers then divide by how many there are.

So, for this problem, 19+22+24+45=110

110/4=27.5

Hope this helped!!

5 0

3 years ago