3 years ago

Qual e a raiz quadrada de 49

Mathematics

1 answer:

dimulka [17.4K]3 years ago

5 0

Answer:

it's 7

Step-by-step explanation:

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2.5d + 7.25 = 1 + 3.75d solve for d

dimulka [17.4K]

Answer:

Step-by-step explanation:

Subtract 1 from both sides. The equation becomes 2.5d + 6.25 = 3.75d

Subtract 2.5d from both sides. The equation becomes 6.25 = 1.25d

Divide 1.25 from both sides. You get 5 = d

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3 years ago

Not sure how to do this because fractions confuse me but i need to know asap thank you so much!

SCORPION-xisa [38]

The answer is B

I subtracted the 2 fractions.

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grin007 [14]

3x = 9y
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y = 3x/9
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The slope is 1/3

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3 years ago

An eighth-grade student said the side length 41,40 and 9 do not form a right triangle, because

balandron [24]

Answer:

Error was CHOOSING the CORRECT hypotenuse in the given sides.

H = 41 units

Step-by-step explanation:

Here, the given sides of the triangle are: 41,40 and 9

Now, as we know in a RIGHT ANGLED TRIANGLE:

The longest side is the HYPOTENUSE.

So, here H = 41

Now, by PYTHAGORAS THEOREM:

$({PERPENDICULAR)^2 + ( BASE)^2 = (HYPOTENUSE)^$

$(40)^2 + (9)^2 = 1600 + 81 = 1681 = (41)^2\\\implies (40)^2 + (9)^2 = (41)^2$

Hence, Pythagoras theorem for Right angled triangle is SATISFIED

So, error was CHOOSING the CORRECT hypotenuse in the given sides.

The correct H = 41 units and NOT 40 units.

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3 years ago