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almond37 [142]
2 years ago
8

X+2x÷y-2y; x=4, y=-2​

Mathematics
2 answers:
Nookie1986 [14]2 years ago
5 0

Substitute the value of the variable into the expression and simplify.

4

Hatshy [7]2 years ago
4 0
4 but make sure to show all calculations ^
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What is the value of the 4 in the number 546210​
love history [14]

Answer:

40,000

Step-by-step explanation:

refer to attached.

the number 4 is found in the Ten Thousands (10,000) place

hence the number 4 has the value of

4 x 10,000

= 40,000

4 0
2 years ago
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The Mulraney's home has 2,550 square feet of living space. A contractor is building an addition to their home that will increase
IceJOKER [234]
You equation will be
 2550 + (2550 X 8%)
2550 + (2550 X 0.08)
2550 + 204
= 2754


8 0
3 years ago
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What is a postulate?
zloy xaker [14]

Answer:

A statement, also known as an axiom, which is taken to be true without proof. Postulates are the basic structure from which lemmas and theorems are derived.

Step-by-step explanation:

The Addition Postulate: If you have one apple and Sally has one apple, when you both add the same quantity to your existing number of apples, you'll still have the same number of apples. Using algebra, the postulate states:

If x = y, then x + 4 = y + 4

The Subtraction Postulate: If you have ten apples and Sally has ten apples, when you both subtract the same quantity of apples from your existing number of apples, you'll still have the same number of apples.

If x = y, then x - 3 = y - 3

Without being repetitive, these same principles apply to both multiplication and division.

The Multiplication Postulate: If x = y, then x * 3 = y * 3

The Division Postulate: If x = y, then x / 7 = y / 7

5 0
3 years ago
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You are skiing down a mountain with a vertical height of 800 feet. The distance from the top of the mountain to the base is 1600
adoni [48]

Answer:

θ  = 30^{0}

Step-by-step explanation:

Since the vertical height of the mountain is 800 feet, and the distance from the top to its base is 1600 feet. Let the angle of elevation be represented by θ, applying the required trigonometric function;

Sin θ = \frac{opposite}{hypotenuse}

Sin θ = \frac{800}{1600}

        = 0.5

θ = Sin^{-1} 0.5

θ  = 30^{0}

Thus, the angle of elevation from the base to the top of the mountain is 30^{0}.

7 0
3 years ago
A half-circle is joined to an equilateral triangle with side lengths of 12 units. What is the perimeter of the resulting shape?
krek1111 [17]

Answer:

P = 42.84  cm

Step-by-step explanation:

A half-circle is joined to an equilateral triangle with side lengths of 12 units.

We need to find the perimeter of the resulting shape.

The perimeter of the half cirle is πr.

The diameter of the circle is 12. It means radius is 6 units.

An equilateral triangle has 3 equal sides. So, perimeter of the triangle is given by :

P = πr  + 12 +12

= 3.14(6) + 24

= 42.84  cm

Hence, the perimeter of the resulting shape is 42.84  cm.

8 0
2 years ago
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