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Wittaler [7]
4 years ago
12

Omg help please i suck at Math really

Mathematics
1 answer:
Fittoniya [83]4 years ago
4 0

7)

10x=y because y is 10 times larger than x.

a) Therefore y=1000 because we would multiply 100 by 10.

b) Again we must multiply be 10. So y=5000

8)

y=3x because y is 3 times larger than x.

a)

k=y/x

So y/x = 3

b) Since k=3, and each slice is 1/8 y. We can find the amount of cheese on each slice.

y/x=3

so y=3x

1/8 y = 3/8 x

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Point A lies on the circle and has an x-coordinate of 1..
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Answer:

the last one

Step-by-step explanation:

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6 0
3 years ago
A model of a 39 foot tall building was made by using the scale 1 in : 4.5 feet. What is the height of the model? Round your answ
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3 years ago
What is 877.71 rounded to the nearest tenth
Yuki888 [10]
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5 0
3 years ago
Read 2 more answers
Solve for the roots in the equation below. x4 + 3x2 - 4 = 0
fgiga [73]
First, you need to rewrite the expression into binomial form, so you are working with two terms (as you world with a quadratic):
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(x²  )(x²  )
Next, find out two numbers that add together to give you -3 and multiply to give -4 (these are the leftover integers after removing the x²s). These two numbers are -4 and 1.
Place the -4 and 1 into the brackets:
(x²-4)(x²+1)=0
Notice that the x²-4 is a difference of two squares, so can be further factorised into (x+2)(x-2)
This leaves you with a final factorisation of:
(x+2)(x-2)(x²+1)=0
Now we handle each bracket individually to obtain our four solutions for x:
x+2=0
x=-2
x-2=0
x=2
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x²=1
x=<span>±1</span>

8 0
3 years ago
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