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3 years ago

Numbers to add

Mathematics

1 answer:

Sindrei [870]3 years ago

5 0

Answer:

1. 5

2. 10

3. 15

4. 5

5. 475

6. 15

7. 479/5

8. 479/5

9. -5

10. 459

Step-by-step explanation:

you multiply them and then subtract.

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the ratio of stars to stripes is 50 to 13. If there were 400 stars in the parade, how many stripes were there?

Black_prince [1.1K]

I believe it's 104. You would set it up as a fraction so:
50/13 and 400/x.
Then you would cross multiply so 13x400 is 5,200. So this divided by 50 = 104. Hope I helped!

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3 years ago

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tamaranim1 [39]

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Step-by-step explanation:

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Find the zeros of the following

julia-pushkina [17]

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13 ) Go...

$f(x) = {x}^{2} - 2x$

$0 = {x}^{2} - 2x$

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Factor x

$x(x - 2) = 0$

$x = 0 \: \: \: or \: \: \: x - 2 = 0$

$x = 0 \: \: \: \: or \: \: \: \: x = 2$

These are the zeroes.

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14 ) Go...

$f(x) = {x}^{3} + 9x + 11x - 21$

$0 = {x}^{3} + 9 {x}^{2} + 11x - 21$

${x}^{3} + 9 {x}^{2} + 11x - 21 = 0$

$(x - 1)(x + 3)(x + 7) = 0$

$x - 1 = 0 \: \: or \: \: x + 3 = 0 \: \: or \: \: x + 7 = 0 \\$

$x = 1 \: \: \: or \: \: \: x = - 3 \: \: \: or \: \: \: x = - 7 \\$

These are the zeroes.

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3 years ago