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3 years ago

6

What is the answer to number 4?

1 answer:

Ugo [173]3 years ago

7 0

I believe the right answer is b

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Will mark brainlist if its right

pickupchik [31]

Answer: S<\-2

Hope i was some help.

Step-by-step explanation: sorry I can’t put the right sign my keybored won’t let me but you know what it stands for.

3s+6s</-5(s+2)

start off with -5(s+2) you multiply -5 with s and it is -5s then you do the same for +2 take -5 and multiply by +2 pos times a neg is always a neg so it’s -10.

3s+6<\-5s-10

So you have to get rid of the -5s so your going to do the inverse which is add 5 to -5 and it will get rid of -5s but then you have to add 5 to 3s and that will be 8s.

8s+6</-10

Now your going to get rid of the +6 and to do that you do the inverse you subtract 6 and it will get rid of it now you have to do the same for -10 so you will subtract 6 to -10 and that will equal -16.

Now you have to divide!

8s/8 </ -16/8

And it should equal s <\-2

3 0

2 years ago

Evaluate the given integral by changing to polar coordinates. sin(x2 y2) dA R , where R is the region in the first quadrant betw

alexira [117]

Answer:

I = 1.47001

Step-by-step explanation:

we have the function

$f(x,y)=sin(x^2y^2)\\$

In polar coordinates we have

$x=rcos\theta\\y=rsin\theta$

and dA is given by

$dA=rdrd\theta$

Hence, the integral that we have to solve is

$I=\int \limt_2^4 \int \limit_0^{\pi /2}sin(r^4cos^2\theta sin^2\theta)rdrd\theta$

This integral can be solved in a convenient program of your choice (it is very difficult to solve in an analytical way, I use Wolfram Alpha on line)

I = 1.47001

Hope this helps!!!

7 0

3 years ago

Angle a is 40 work out the angle of X on the triangle

fredd [130]

50 degrees if it is a right angled triangle

4 0

2 years ago

Given the triangle below, what is m < b, rounded to the nearest tenth?

ahrayia [7]

Option A:

m∠B = 42.1°

Solution:

Given data:

b = 18, c = 15 and m∠C = 34°

Using sine formula:

$$\frac{b}{\sin B}=\frac{c}{\sin C}$

Substitute the given values.

$$\frac{18}{\sin B}=\frac{15}{\sin 34^\circ}$

Do cross multiplication.

$${18} \times {\sin 34^\circ}={15} \times{\sin B}$

Divide by 15 on both sides.

$$\frac{{18} \times {\sin 34^\circ}}{15} =\frac{{15} \times{\sin B}}{15}$

$$\frac{{6} \times0.559}{5} =\sin B$

$$0.6708=\sin B$

$$\sin ^{-1}0.6708= B$

$42.1^\circ =B$

Switch the sides.

m∠B = 42.1°

Option A is the correct answer.

3 0

2 years ago

Determine whether the parallelogram is a rhombus, rectangle, square, or none. Explain.

lara31 [8.8K]

Answer:

Step-by-step explanation:

The diagonals of the given parallelogram are QS and RT. We would first determine if its diagonals are congruent.

QS = √(1 - 5)² + (3 - 3)² = 16

RT = √(3 - 3)² + (4 - 2)² = 4

Since QS ≠ RT, it means that they are not congruent and this means that the parallelogram is not a rectangle.

Let us check if the diagonals are perpendicular.

Slope of QS = (3 - 3)/(5 - 1) = 0/4

Slope of RT = (2 - 4)/(3 - 3) = - 2/0

The slopes are not opposite reciprocals. It means that the diagonals are not perpendicular. Therefore, the correct option is

D. QRST is none of these because its diagonals are neither congruent nor perpendicular.

4 0

3 years ago