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2 years ago

13

Extract all 30 less than or equal to aij less than or equal to 50 in a vector b, that is, find all elements of A that are betwee

n 30 and 50 and put them in a vector b.

1 answer:

Y_Kistochka [10]2 years ago

5 0

B = A(30 <= A <= 50)

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What are non examples of rational Numbers?

statuscvo [17]

Although thisnumber<span> can be expressed as a fraction, we need more than to be a </span>rational number<span>. The fraction's numerator and denominator must both be integers, and √2 cannot be expressed as an integer</span>

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3 years ago

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Divide and answer in simplest form: 6 ÷ 4/3

4vir4ik [10]

Answer:

3

Step-by-step explanation:

1) when dividing fractions change the sign to multiplication and flip the second fraction(reciprocal) upside down and multiply

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2 years ago

Solve for x: 3 - (2x - 5) < -4(x + 2)

sattari [20]

x < -23/2

Step-by-step explanation:

you open the bracket first

LHS

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RHS

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therefore:

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-6x+4x < -8-15

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Divide both side by -2x

-2x/-2 < -23/-2

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3 years ago

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Find the solutions for a triangle with a = 16, c =12, and B = 63º.

maks197457 [2]

Answer:

b. A = 71.6°; C = 45.40°; b =15.0

Step-by-step explanation:

The missing values can be found with the help of the Law of Cosine and properties of triangles:

Side b (Law of Cosine)

$b = \sqrt{a^{2}+c^{2}-2\cdot a \cdot c \cdot \cos B}$

$b = \sqrt{16^{2}+12^{2}-2\cdot (16)\cdot (12) \cdot \cos 63^{\circ}}$

$b \approx 15.022$

Angle A (Law of Cosine)

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$\cos A = - \frac{16^{2}-15.022^{2}-12^{2}}{2\cdot (15.022)\cdot (12)}$

$\cos A = 0.315$

$A= \cos^{-1} 0.315$

$A \approx 71.639^{\circ}$

Angle C (Sum of internal angles in triangles)

$C = 180^{\circ} - 63^{\circ} - 71.639^{\circ}$

$C = 45.361^{\circ}$

Hence, the right answer is B.

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3 years ago

Solve each equation for y (get into slope-intercept/y=mx + b form):

Gwar [14]

Answer:

Step-by-step explanation:

In order to do this we need to isolate y by performing the inverse operations on the other values like so...

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y = -5 - 0.5x ... move -0.5 to the left so it matches y = mx + b

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3 years ago