Alexandria wants to go hiking on Saturday. She will consider these conditions when she chooses which of several parks to visit:

Mathematics

2 answers:

Fittoniya [83]2 years ago

8 0

The answer is 200 miles

kkurt [141]2 years ago

7 0

The answer would be 200 miles. I just took the test and got it right.

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the NACI cafeteria wants to sell two 25 cm diameter medium size pizzas for the same price as one large pizza. what should the di

Alex777 [14]

Answer:

35.34 centimeters

Step-by-step explanation:

The amount of pizza is same as the area. The pizza is in a shape of a circle. The area of a circle is:

$A=\pi r^2$

Where

r is the radius (half of diameter)

Area of one medium size pizza is (diameter 25 means radius is 25/2 = 12.5):

$A=\pi r^2\\A=\pi (12.5)^2\\A=490.87$

So, area of two of these medium size pizzas is:

490.87 * 2 = 981.74

This should be the area of the large pizza. We can find the radius of that by substituting into formula. Shown below:

$A=\pi r^2\\981.75=\pi r^2\\r=\sqrt{\frac{981.74}{\pi}} \\r=17.67$

Hence, the diameter would be around:

17.67 * 2 = 35.34 centimeters

5 0

2 years ago

The ratio of boys to girls in a group is 3:1. If there are 52 more boys than girls, work out how many people there are in total.

UkoKoshka [18]

Answer: 104 (Good chance its wrong)

Step-by-step explanation: if the ratio is 3:1 then there's 3 times as much boys as girls. if there are 52 more boys then that means 52 is twice as much as the number of girls so if we divide is by 2 we get 26. if we add 26 with 52 we get 78 and if we divide 78 by 3 we get 26. so I believe there are 26 girls and 78 boys. 26+78=104

I believe 104 is the answer but there's a good chance i'm wrong.

7 0

3 years ago

8 - 5x3, for x = -1 The 3 after the x is a exponent plz help!!!!

zvonat [6]

Answer:

Step-by-step explanation:

$8-5x^3$ , if x = -1