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3 years ago

The height of a triangle is 15cm, the base is 40cm and the other two side are 25cm.

Mathematics

1 answer:

morpeh [17]3 years ago

6 0

The formula for the area of a triangle is base*height/2. So lets input the number.

15*40=600/2=300 cm2

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5x1/3 as a mixed number

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Answer:

$1\dfrac23$

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So far, Rachel has burned 117.2 calories. She wants to burn a total of 300 calories. How many more calories must Rachel burn?

Wittaler [7]

Answer:

Step-by-step explanation:

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2 years ago

What is the area of the figure? 10.2 in. 3 in. 3 in 2 in. 2 in. 8 in. 6.2 in

Lubov Fominskaja [6]

Answer:

B. 80.2

Step-by-step explanation:

The easiest way to find the area of this figure is to divide it into two rectangles.

First, let's find the area of the top rectangle.

10.2 * 3 = 30.6

The area of the top rectangle is 30.6 square in.

Now let's find the area of the second rectangle:

6.2 * 8 = 49.6

The area of the bottom rectangle is 49.6 square in.

Lastly, we have to add the areas of the two rectangles together.

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The area of the entire figure is 80.2 square inches.

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3 years ago

What is the volume of this figure?

erica [24]

Answer:

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3 years ago

Which equation has the solutions x=5+-2 square root7/3

Iteru [2.4K]

Answer:

$3x^2 -10x - 1 = 0$

Step-by-step explanation:

We need to find an equation that has the solutions x=(5±2√7)/3

We know that for a polynomial of the type ax^2 + bx + c = 0, the solution to that polynomial is given by the quadratic formula:

$\frac{-b+\sqrt{b^2-4ac} }{2a}$

In this case, we know that:

-b = 5 → b = -5

2a = 3 → a=3/2

b^2-4ac = 28 → (-5)^2-4(3/2)c = 28 → 25 - 6c = 28 → -6c = 3 → c= -1/2.

Therefore, the equation is:

$\frac{3}{2} x^2 -5x -\frac{1}{2} = 0$

$3x^2 -10x - 1 = 0$

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3 years ago