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Lesechka [4]
3 years ago
7

Give me the answers please

Mathematics
1 answer:
dlinn [17]3 years ago
4 0
2. the first one (2/4=15/30)   3a.)2.16666667  3b.)10 7/9  3c.) 7 5/6
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Olivia has made a pyramid model for her history project at school. The pyramid model has a square base. Each triangular side of
Tresset [83]

Answer:

278 square centimeters

Step-by-step explanation:

You need to use the Pythagorean Theorm. If you're pyramid is a perfect square, then to the middle the length is 5. Because 10/2 is 5. You then use the Pythagorean Theorm  (a^2 + b^2 =c^2) to find the side length of the traingle. When you square the hypotenuse and subtract the bottom leg sqaured, you are left with 3.46274054 after square rooting it. (c^2-a^2=b^2) Plug these into the equation for a right, rectangluar pyramid. You then get 277.9, rounded, is 278.

Hope this helps!

3 0
2 years ago
Can someone help me with this math homework please!
Wittaler [7]

Step-by-step explanation:

To give you a hand for this question, I will show you how to work out one of the equations

One equation is y - 1 = \frac{-5}{4} (x-2)

We know that when x = -2, y = 6

So we can substitute in -2 and see if we get 6

y - 1 = \frac{-5}{4} (-2-2)

y - 1 = \frac{-5}{4} * (-4)

y - 1 = 5

y = 5 + 1

y=6

So this equation is true! Now try the same for the other equations :)

8 0
3 years ago
Read 2 more answers
Joey opened a bank account 5 years ago with $100. today he has $1000 in the account. what is the percentage od increase?
anyanavicka [17]
To calculate the percentage increase:

First: Find out the difference (increase) between the two numbers you are comparing.
It is computed by: Increase = New Number - Original Number


Second: Divide the increase by the original number and multiply the answer by 100.
It is computed by: % increase = Increase ÷ Original Number × 100.

So in the problem:
First step:Increase = 1000 – 100
Increase = 900

Second:
% increase = 900 / 100 x 100%
increase = 900% increase
7 0
3 years ago
I need help! I would appreciate if you show me the work! Thank you !
iVinArrow [24]

Answer:

-11 for the first one and 0 for the second one

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
John can cut the yard on a riding lawn mower in 2 hours. Sandy can cut the yard with a push mower in 5 hours. How long would it
Inga [223]

Answer:

2x/5x= 7

Step-by-step explanation:

7 0
3 years ago
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