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katrin2010 [14]
3 years ago
5

Please help! Will mark brainliest!

Mathematics
1 answer:
babunello [35]3 years ago
3 0

Answer:

12) 20

13) 12.5

14)124

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Powers of 10 with positive exponents are:<br> less than 1<br> greater than 1
nata0808 [166]

Answer:

greater than 1

Step-by-step explanation:

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3 years ago
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Solve the simultaneous equations 8 x + 5 y = 28 4 x + 5 y = 16
Nostrana [21]

Answer:

x=3, y=0.8

Step-by-step explanation:

8x+5y=28

4x+5y=16

Subtract the second simultaneous equation from the first.

You are left with: 4x=12

12/4=3

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Substitute this back into one of the equations.

8(3)+5y=28

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Answer:

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Step-by-step explanation:

use slope-intercept form \frac{y2 - y1}{x2 - x1}

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6 - 5 = 1

m value = 2/1 = 2

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to find b plug one of the points in for x and y

Example: 10 = 2(5) + b

solve equation

10 = 10 + b

subtract 10 from both sides

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Equation of line equals y=2x+0 or simply just y=2x

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If a box of 100 pencils costs $4.75, what should you expect to pay for 226 pencils?
choli [55]

Answer:

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Step-by-step explanation:

divide the cost( $4.75) by the amount of pencils ( 100). Then multiply it by the new number of pencils

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The value of h is exactly the axis of symmetry. So when h changes, it completely changes the line of symmetry. This is because the vertex is (h, k) and the x value of the vertex is always equal to the line of symmetry in a quadratic.

Changing the k value does nothing to the line of symmetry. This is because it is just moving the graph up and down, which doesn't change the symmetry of a parabola.

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3 years ago
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