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2 years ago

What is 5 x 3/4 and please give me your simplest answer

Mathematics

2 answers:

NikAS [45]2 years ago

7 0

Answer:

Step-by-step explanation:

<h3>Have a blessed day ❤❤</h3>

lord [1]2 years ago

5 0

Answer:

15/4

Step-by-step explanation:

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Solve the problems 11-4 times

NNADVOKAT [17]

Answer:

12 45 67 88 90

Step-by-step explanation:

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3 years ago

Marking brainliest <br><br> Please help me answer

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2 years ago

If the squared difference of the zeroes of the quadratic polynomial x2+kx+30 is equal to 169 find the value of k and the zeroes

anyanavicka [17]

ANSWER

$x = 2 \: \: or \: \: x = 15$

$x = - 2 \: \: or \: \: x = - 15$

EXPLANATION

The given polynomial is

$f(x) = {x}^{2} + kx + 30$

where a=1,b=k, c=30

Let the zeroes of this polynomial be m and n.

Then the sum of roots is

$m + n = - \frac{b}{a} = -k$

and the product of roots is

$mn = \frac{c}{a} = 30$

The square difference of the zeroes is given by the expression.

$( {m - n})^{2} = {(m + n)}^{2} - 4mn$

From the question, this difference is 169.

This implies that:

$( { - k)}^{2} - 4(30) = 169$

${ k}^{2} -120= 169$

$k^{2} = 289$

$k= \pm \sqrt{289}$

$k= \pm17$

We substitute the values of k into the equation and solve for x.

$f(x) = {x}^{2} \pm17x + 30$

$f(x) = (x \pm2)(x \pm 15)$

The zeroes are given by;

$(x \pm2)(x \pm 15) = 0$

$x = \pm2 \: \: or \: \: x = \pm 15$

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3 years ago

Write the equation of a line that is perpendicular to the given line and that passes through the given point.

Zigmanuir [339]

-3x-6y=17

-6y=3x+17

y=-x/2-17/6 so the slope of the line is -1/2

For another line to be perpendicular to this one the product of their slopes must equal -1

(-1/2)m=-1, m=2 so the perpendicular line will have a slope of 2...

y=2x+b, using point (6,3) we can solve for b...

3=2(6)+b

3=12+b

b=-9 so

y=2x-9

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2 years ago

Find the lateral area of this cone.<br> Leave your answer in terms of pi <br> 15cm<br> 8cm

Serhud [2]

Answer:

lateral surface area of cone =

$\pi rl$