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3 years ago

Carl and Beneta are playing a game using the spinner below

Mathematics

1 answer:

Molodets [167]3 years ago

3 0

A) Carl's claim is incorrect since the probability of the spinner landing on a 6, 7, or 8 is 3/8, which is only 37.5% and cannot be described as likely.

b) For Benata there are many situations for which this could work, but one example for event X would be the spinner landing on a number less than or equal to 6.

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Lily took a survey of 80 students on 7th grade and 150 students in 8th grade she found that 80% of the 7th graders like country

Anarel [89]

Answer:

Step-by-step explanation:

80 over 100*150

80 divided by 100=0.8 *150=1208student

0.8 *60=48

8 0

3 years ago

A diagonal of a square is 36 feet long. What is the area of the square?

Rzqust [24]

So you can you the Pythagorean theorem to solve this problem.

if each side of the square is a certain length x, then the square is made up of two right triangles.

the sides adjacent to the right angle are length x while the hypoteneus is the diagonal whcih measures 36 feet.

a^2 + b^2 = c^2

x^2 + x^2 = 36^2

2x^2 = 1296

x^2 = 648

x = 25.456

area of a square = x^2 = 648 ft^2

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3 years ago

Find the unknown<br><br> x:14 = 10:20

jeyben [28]

Answer:

7:14 = 10:20

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

The sum of the two digit number is 12. If the digit are revesed, then the new number is 18 less than the originaol muber that is

FromTheMoon [43]

Answer:

A) X + Y = 12

B) 10Y + x = 10x + Y -18

B) 9Y = 9x -18 multiplying A) by -9

A) -9Y = 9x - 72 adding A and B we get

0 = 18x -90

x = 5

The number is 75

Double-Check

7 + 5 = 12

75 -57 = 18

Step-by-step explanation:

6 0

3 years ago

By driving 8 mph faster than Bob, John can make a 230 mile trip in one half hour less. How fast does Bob drive on the trip? Roun

____ [38]

Answer: The speed of Bob is 56.8 km/hr.

Step-by-step explanation:

Let the speed of Bob be 'x'.

Let the speed of John be 'x-8'.

Distance covered = 230 miles

time = $1\dfrac{1}{2}=\dfrac{3}{2}\ hr$

According to question, we get that

$\dfrac{230}{x}-\dfrac{230}{x+8}=\dfrac{3}{2}\\\\230\dfrac{x+8-x}{x(x+8)}=\dfrac{3}{2}\\\\\dfrac{230\times 8}{x^2+8x}=\dfrac{3}{2}\\\\\dfrac{1840}{x^2+8x}=\dfrac{3}{2}\\\\1840\times 2=3x^2+24x\\\\3680=3x^2+24x\\\\3x^2+24x-3680=0\\\\x\approx 56.8\ km/hr$

Hence, the speed of Bob is 56.8 km/hr.

6 0

3 years ago