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3 years ago

17 POINTS yayyyyyy!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

saw5 [17]3 years ago

4 0

Answer: 24 km2

Step-by-step explanation: Surface area is measured by multiplying two lengths. For example: The area of a square with sides of length a is Area = a * a = a²

Therefore, the answer is 24 km2

I hope this helps!

You might be interested in

Help please? Suppose you have a normally distributed set of data pertaining to a standardized test. The mean score is 500 and th

Lina20 [59]

The formula to calculate the z-score of a certain value is:

z = (x - (mean))/(standard deviation)

In this example, the x-value is 450, the S.D. is 100, and the mean is 500.

So, substitute these values into the formula.

z = (450-(500))/100
z=-50/100
z=-0.5

Therefore, the z-score is -0.5.

4 0

3 years ago

Sally uses 5 1/5 of clay to make a set of four pots that are exactly the same.

ki77a [65]

Answer:

1 3/10

Step-by-step explanation:

5 1/5 ÷ 4= 1 3/10

5 0

3 years ago

Help!! Solving absolute value inequalities

goblinko [34]

Answer:

48. $x \geq -7$ or $x \leq 31$

51. $x \leq 13$ or $x \geq 3$

54. $x < \frac{5}{2}$ or $x > \frac{-15}{2}$

57. $x < \frac{18}{7}$ or $x > -4$

Step-by-step explanation:

48. $| 12 - x | \leq 19$

-There are two equations:

Equation 1:

$12 - x \leq 19$

Equation 2:

$12 - x \geq -19$

Solving equation 1:

$12 - x \leq 19$

$12- 12 - x \leq 19 - 12$

$-x \leq 7$

$\frac{-x}{-1} \leq \frac{7}{-1}$

$x \geq -7$ (Inequality sign changed, because of dividing by a negative number)

-Solving equation 2:

$12 - x \geq -19$

$12 - 12 - x \geq -19 - 12$

$-x \geq -31$

$\frac{-x}{-1} \geq \frac{-31}{-1}$

$x \leq 31$ (Inequality sign changed, because of dividing by a negative number)

-Answers:

$x \geq -7$ or $x \leq 31$

51. $| x - 8 | \leq 5$

-There are two equations:

Equation 1:

$x - 8 \leq 5$

Equation 2:

$x - 8 \geq - 5$

-Solving equation 1:

$x - 8 \leq 5$

$x - 8 + 8 \leq 5 + 8$

$x \leq 13$

-Solving equation 2:

$x - 8 \geq - 5$

$x - 8 + 8 \geq - 5 + 8$

$x \geq 3$

Answers:

$x \leq 13$ or $x \geq 3$

54. $| 4x + 10 | < 20$

-There are two equations:

Equation 1:

$4x + 10 < 20$

Equation 2:

$4x + 10 > -20$

-Solving equation 1:

$4x + 10 < 20$

$4x + 10 - 10 < 20 - 10$

$4x < 10$

$\frac{4x}{4} < \frac{10}{4}$

$x < \frac{5}{2}$

-Solving equation 2:

$4x + 10 > -20$

$4x + 10 - 10 > -20 - 10$

$4x > -30$

$\frac{4x}{4} > \frac{-30}{4}$

$x > \frac{-15}{2}$

-Answers:

$x < \frac{5}{2}$ or $x > \frac{-15}{2}$

57. $| 7x + 5 | < 23$

-There are two equations:

Equation 1:

$7x + 5 < 23$

Equation 2:

$7x + 5 > -23$

-Solving equation 1:

$7x + 5 < 23$

$7x + 5 - 5 < 23 - 5$

$7x < 18$

$\frac{7x}{7} < \frac{18}{7}$

$x < \frac{18}{7}$

Solving equation 2:

$7x + 5 > -23$

$7x + 5 - 5 > -23 - 5$

$7x > -28$

$\frac{7x}{7} > \frac{-28}{7}$

$x > -4$

Answers:

$x < \frac{18}{7}$ or $x > -4$

And we are finished.

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5 0

3 years ago

The data plan for Shawn's phone has 32,000 megabytes of storage for photos. She wants to increase the amount of data by 4%. If e

mixer [17]

You need to do 32,000/100 which is 320 and then multiply this by 4. This is 1280. Now you need to divide 1280 by 5 which is 256.

This means that she can get 256 new photos, so yes, she can get 200 more photos.

Hope this helps x

4 0

3 years ago

Read 2 more answers

Please help me..

schepotkina [342]

Answer: A: (x + 4)² + (y - 5)² = 8

<u>Step-by-step explanation:</u>

The equation of a circle is: (x - h)² + (y - k)² = r² where

(h, k) is the center of the circle
r is the radius of the circle

To find the equation of circle A, we need (h, k) and r².

It is given that (h, k) = (-4, 5)

The distance between the center of circles A and B is the radius of circle A.

Let's find the center of circle B by completing the square:

x² - 4x + ____ + y² + 6y + _____ = 12 + ____ + _____

↓ ↓

h = -4/2 k = 6/2

h = -2 k = 3 → Circle B has center (-2, 3)

Now let's find the distance between the center of circles A and B:

$(r_A)^2=d^2=(x_A-x_B)^2+(y_A-y_B)^2$

= (-4 - (-2))² + (5 - 3)²

= (-2)² + 2²

= 4 + 4

= 8

Now we have the the center (h, k) and the r² for circle A:

(h, k) = (-4, 5) and r² = 8 → (x + 4)² + (y - 5)² = 8

5 0

3 years ago