MATHEMATICS HIGH SCHOOL

Which prism has 12 vertices?rectangular
pentagonal
hexagonal
octagonal

Answers

Answer 1
Answer: C- Hexagonal. Basically you just double the sides of the 2d shape to find out the amount of vertices.
Answer 2
Answer:

Answer:

C

Step-by-step explanation:

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All of the following ordered pairs satisfy the function rule y = -2 x - 1 except _____.(-2, 3) (0, -1) (2, -5) (-1, -3)

Answers

You need to sub your X and Y values in. Take (-1,-3) for example: if you sub in these values, your equation y=-2x -1 will become (-3)=-2(-1) - 1. However, if you simplify it out, you'll realise that it doesn't make sense as you'll get -3=-1 which is clearly untrue, thus (-1,-3) is the only pair that doesn't satisfy your function. 

There is a zombie outbreak in a city that infects 10 people right away. Each of the 10 zombies are able to infect 2 people every minute. How many people are infected in 8 minutes?

Answers

160 people infected in 8 min

Kelly is in a hot air balloon that has just taken off and is now floating 7 meters above its launching point. Denise is standing on the ground, 7 meters away from the launching point. How far apart are Kelly and Denise? If necessary, round to the nearest tenth. For 8th grade\

Answers

Answer:

9.9 meters

Step-by-step explanation:

Given that the distance between Kelly and launching point was 7m and also the distance between launching point and Dennis was also 7m, to calculate for the distance between Kelly and denise is done by applying the formula used for calculating the hypotenuse in a right angle triangle (the shape that was created)

PICTURE ATTACHED IS A DETAILED STEP BY STEP PROCESS OF HOW 9.9m WAS GOTTEN.

When the queen counted her jewels, she found that she had five pearls for each diamond, two opals and three rubies for each diamond, and two emeralds for each opal. If she has three diamonds, how many jewels does she have altogether?

Answers

I believe she would have 45 gems total

3 diamonds

5 pearls per diamond = 15 pearls

2 opals and 3 rubies per diamond= 6 opals and 9 rubies

2 emeralds per opal= 12 emeralds

3+15+6+9+12= 45 gems total

The value of Jamie's baseball card collection rose 60% in the last year. It is now worth $272. What was it worth a year ago?

Answers

Take X as the original cost 255=1.5x.... Since the value has appreciated by 60% X=255/1.5=170...

If x = 9 and y = 4, work out the value of xy/ 2

Answers

answer: 3/1

Step-by-step explanation:

This is like a puzzle, and each part tells you something. The first statement tells us that x is a negative number and y is a positive number. The next statement, x + y , is what we need to know. The first absolute value gives us x. Solve for the absolute value, that is, what is inside can be either negative or positive so either x-9 = 12 or x - 9 = -12. Solve those for x = 21 or x = -3. We know that x is negative from that first statement, , so x is -3. Do the same with the other absolute value to solve for y, then add the two together to get your final answer. hope this helps a bit!
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What is the right answer? Please tell me, I need it urgently.