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3 years ago

Help me with these problem ss

Mathematics

1 answer:

iren2701 [21]3 years ago

6 0

51 centimeters=5.1 decimeters=.51 meters
8 decimeters=80 centimeters=.8 meters
82 centimeters=8.2 decimeters=.82 meters

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A rectangle is 4 times as long as it is wide. The perimeter of a rectangle is 50 cm. What are the dimensions of the rectangle?

marissa [1.9K]

We use the equation 2x+8x=50.

10x=50
x=5

The rectangle will be 20 cm long and 5 cm wide.

Hope this helps!

7 0

3 years ago

Read 2 more answers

Suppose that you are conducting a survey on how many students have blue eyes in each first period classroom at Garfield Middle s

rusak2 [61]

Answer:

The correct statement is the first one: The number of blue-eyed students in Mr. Garcia's class is 2 standard deviations to the right of the mean

Explanation:

To calculate how many standard deviations a particular value in a group is from the mean, you can use the z-score:

$z-score=(x-\mu )/\sigma$

Where:

$z-score$ is the number of standard deviations the value of x is from the mean

$\mu$ is the mean

$\sigma$ is the standard deviation

Substitute in the formula:

$z-score=(10-6)/2=4/2=2$

Which means that the number of blue-eyed students in Mr. Garcia's class is 2 standard deviations above the mean.

Above the mean is the same that to the right of the mean, because the in the normal standard probability graph the central value is Z = 0 (the z-score of the mean value is 0), the positive values are to the right of the central value, and the negative values are to the left of the central value.

Therefore, the correct statement is the first one: The number of blue-eyed students in Mr. Garcia's class is 2 standard deviations to the right of the mean,

4 0

4 years ago

I need help with this pls

Vadim26 [7]

Answer:

I tho this was a game at first but gurl i can see the shape and everything but what im i supposed to do?

just tell me the instructions and ill help

8 0

3 years ago

6x — 4 > 14or3х + 10 < 4

Ipatiy [6.2K]

9514 1404 393

Answer:

x < -2 or 3 < x

Step-by-step explanation:

6x -4 > 14

6x > 18 . . . . add 4

x > 3 . . . . . . divide by 6

3x +10 < 4

3x < -6 . . . . subtract 10

x < -2 . . . . . divide by 3

The solution is the union of disjoint sets:

x < -2 or x > 3

3 0

3 years ago

Find (f*g)(x) when f(x)=x^2-7x+12 and g(x)=7/x^2-16

AleksandrR [38]

Answer:

$(f\cdot g)(x)=\dfrac{7x-21}{x+4}$

Step-by-step explanation:

$(f\cdot g)(x)=f(x)\cdot g(x)=(x^2-7x+12)\cdot\dfrac{7}{x^2-16}\\\\=7\dfrac{(x-3)(x-4)}{(x+4)(x-4)}=\dfrac{7(x-3)}{x+4}\\\\=\dfrac{7x-21}{x+4}$

7 0

3 years ago