2 years ago

Answer the question pls

Mathematics

1 answer:

Ksivusya [100]2 years ago

3 0

Answer:

Question number 8 u place the number 1 line before -1 on the left.

Step-by-step explanation:

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10. If x = -2, y=-6 and z= 4, find the value of 4xy Z

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Answer:

192

Step-by-step explanation:

Given

4xyz ← substitute given values into expression

= 4 × - 2 × - 6 × 4 = - 8 × - 24 = 192

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What is the volume of a cone that has a radius of 4 units and a height of 6 units?

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3 years ago

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There are 45 students in Lisa's class. 35 of the students are boys and rest are girls

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If the question is how many students are girls, than it's ten(10).

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Evaluate the expression when x = 1/2 and y = -2/5. Show all work. 1. -x + y 2. x +2y

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3 years ago

WXY is a right triangle. A. True. B. False.

lora16 [44]

Answer:

B. False

Step-by-step explanation:

According to pythagorean theorem, for this to be a right triangle, the sum of square of the length of the two legs must equal square of the length of the hypotenuse (longest side).

So $(\sqrt{34} )^{2}$ should equal $(\sqrt{18} )^{2}+(\sqrt{18} )^{2}$

We also know that $(\sqrt{a} )^{2}=(\sqrt{a})(\sqrt{a})=a$

Hence, $(\sqrt{18} )^{2}+(\sqrt{18} )^{2}=18+18=36$ , and

$(\sqrt{34} )^{2}=34$

They ARE NOT EQUAL, so the triangle is NOT a right triangle.

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