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2 years ago

Q17 Look at this shape, the circle exactly fits into the square. If the length of the

Mathematics

1 answer:

ozzi2 years ago

7 0

Answer:

25.13

Step-by-step explanation:

Formular

= C = 2πr

C = circumference

r = radius

2 × 3.14 × 4

= 25.13

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What is the relationship between the 6s in the number 660,472

Mrac [35]

They are closer in values.

3 0

3 years ago

Read 2 more answers

Use skip counting and the number line to find the missing number.<br> 3X__=12

loris [4]

Answer:

Step-by-step explanation:

3 times 4 is 12. you can solve this by dividing 12 by 3, or by skip counting and using repeated addition.

7 0

3 years ago

Choose two positive integers a and b, making sure that a<5 and b>80 . The width of a rectangular computer screen is a inch

qwelly [4]

Answer:

Dimensions of the screen are a minimum of 10 inches wide by 8 inches high. The difference between the height and width will be 2 inches

Step-by-step explanation:

$Height = H$

$Width = H + a$

$Area = Height x Width$

$b = H * (H + a)$

$b = H^{2} + aH$

$H^{2} + aH > 80$

$H^{2} + aH - 80 > 0$

a<5 means 'a' can be a = 1, 2, 3, 4

Solving for H for each option of 'a' will give values of 'H' using the quadratic formula below

$H = \frac{-b\±\sqrt{b^{2}-4ac}}{2a}$

As 'a' and 'b' must be positive integers, H and W must be positive integers as well,

$a = 1, H = 8.46, H = -9.46$

$a = 2, H = 8, H = -10$

$a = 3, H = 7.57, H = -10.57$

$a = 4, H = 7.17, H = -11.17$

Based on above possible answers:

$a=2, H=8$

$W = H + a$

$W = 8 + 2$

$W = 10$

Dimensions of the screen are a minimum of 10 inches wide by 8 inches high. The difference between the height and width will be 2 inches

5 0

3 years ago

(5•-3) - (4•-3) + -3 - (3•-3)

Dmitry_Shevchenko [17]

Use PEMDAS.

Parenthesis first.

(-15)-(-12)+3-(-9)

Next multiply,

(-15)+12+3+9 (two negatives get you a positive)

Finally, add and subtract:
-15+24=9

You get 9 as your answer.

Hope this helps!

4 0

3 years ago

Write the equation of the line passing through the two points. Show that this line is perpendicular to the given line.

il63 [147K]

Write the equation of the line passing through the two points. Show that this line is perpendicular to the given line.

(4,1) and (6,-5) y=1/3x-7

(1,-6) and (3,-10) y=1/2x-5

Please help, we learned this today and I’m really confused. How do you do it?

5 0

3 years ago