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3 years ago

Calculate the areas of the rectangle 8 cm 3 cm

Mathematics

1 answer:

IRISSAK [1]3 years ago

5 0

Answer:

Rectangle A: 22 cm

Rectangle B: 25.8 cm

Step-by-step explanation:

To find the area, we multiply the size of the two sides.

8 x 2 = 16

3 x 2 = 16

Now, we have to add 16 and 6.

16 + 6 = 22

To find the area, we multiply the size of the two sides.

5.2 x 2 = 10.4

7.7 x 2 = 15.4

10.4 + 15.4 = 25.8

The answers are:

22 cm
25.8 cm

Hope this helps!

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Given the function h (x)= 2x+4, for which value of x does h (x) = 18?

lesya [120]

Answer:

If 40 wrong then I am sorry.

Step-by-step explanation:

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3 years ago

please show on graph (with x and y coordinates) state where the function x^4-36x^2 is non-negative, increasing, concave up

babunello [35]

Answer:

$y'' =12x^2 -72=0$

And solving we got:

$x=\pm \sqrt{\frac{72}{12}} =\pm \sqrt{6}$

We can find the sings of the second derivate on the following intervals:

$(-\infty$ Concave up

$x=-\sqrt{6}, y =-180$ inflection point

$(-\sqrt{6}$ Concave down

$x=\sqrt{6}, y=-180$ inflection point

$(\sqrt{6}$ Concave up

Step-by-step explanation:

For this case we have the following function:

$y= x^4 -36x^2$

We can find the first derivate and we got:

$y' = 4x^3 -72x$

In order to find the concavity we can find the second derivate and we got:

$y'' = 12x^2 -72$

We can set up this derivate equal to 0 and we got:

$y'' =12x^2 -72=0$

And solving we got:

$x=\pm \sqrt{\frac{72}{12}} =\pm \sqrt{6}$

We can find the sings of the second derivate on the following intervals:

$(-\infty$ Concave up

$x=-\sqrt{6}, y =-180$ inflection point

$(-\sqrt{6}$ Concave down

$x=\sqrt{6}, y=-180$ inflection point

$(\sqrt{6}$ Concave up

8 0

2 years ago

If sally has 3 apples and johnny has 17 bananas,how many is that combined?

svp [43]

Answer: 20

Step-by-step explanation: because 3+17=20

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3 years ago

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An angle of 90° measures (___) Pi radians. An angle of -pi/5 radians measures ____? °.

a_sh-v [17]

$\huge \bf༆ Answer ༄$

Conversion from degree to radian ~

$\boxed{ \sf{ \frac{\pi}{180} \times \theta }}$

$\sf \dfrac{\pi}{180 } \times 90$

$\sf \dfrac{\pi}{2} \: \: rad$

Conversion from radians to degree ~

$\boxed{ \sf{ \frac{180}{\pi} \times \theta}}$

$\sf \dfrac{180}{\pi} \times - \dfrac{ \pi}{5}$

$\sf - 36 \degree$

4 0

2 years ago

Which point would map onto itself after a reflection across the line y = –x? (–4, –4) (–4, 0) (0, –4) (4, –4)

navik [9.2K]

The answer
first, put all point on the figure, and then trace graphe of y = -x
after, that we should find the image of each point, after a reflection across the line y = -x.
and we should find that the point would map onto itself after a reflection is (–4, –4)

for more explanation, please look at the image.

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3 years ago

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