PLEASE HELP DUE TONIGHT All three are separate anwsers. All help is greatly appreciated

Mathematics

1 answer:

andre [41]3 years ago

5 0

Answer:

1: 10+6 x 6 = 96cm

2: 14 + 8 x 5 = 110cm

3: 9 + 14 x 20 = 460cm

Step-by-step explanation:

Hope this helps.

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IF U ANSWER THIS U ARE SWAG

Andrews [41]

Equilateral: "equal"-lateral (lateral means side) so they have all equal sides. Isosceles: means "equal legs", and we have two legs, right? Also iSOSceles has two equal "Sides" joined by an "Odd" side. Scalene: means "uneven" or "odd", so no equal sides.

8 0

2 years ago

Which shows the best estimate to use<br> to find 43 × 78?

Over [174]

Answer:

The best estimate for 43x78 is 40x80

Step-by-step explanation:

43 rounded to the nearest ten is 40.

78 rounded to the nearest ten is 80.

The answer to 40x80 is 3200

4 0

3 years ago

Can someone PLEASE solve this quadratic equation by factoring with the steps? :(

salantis [7]

Answer:

There are no simple factors to this expression. You can however solve for x, giving you:

x = -1 ± √(y + 3)

Step-by-step explanation:

There is no simple pair of factors to this equation, so we'll have to go through the full process. You can see that by observing that there is no pair of rational numbers that add to make 2 and multiply to make -2. We can however solve for x:

$y = x^2 + 2x - 2\\y + 2 = x^2 + 2x\\y + 3 = x^2 + 2x + 1\\y + 3 = (x + 1)^2\\(x + 1)^2 = y + 3\\x + 1 = \pm \sqrt{y + 3}\\x = -1 \pm \sqrt{y + 3}$