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3 years ago

A right triangle has a height of 20 centimeters and a base of 10 centimeters. What is the area of the triangle?

Mathematics

2 answers:

Damm [24]3 years ago

7 0

Answer:

100

Step-by-step explanation:

the area is given by half base times height and we are already given the base and the height so take a half times 10 times 20 .

juin [17]3 years ago

4 0

Answer:

100 cm^2

Step-by-step explanation:

The formula for triangle area is L x W / 2.

20 x 10 = 200

200 / 2 = 100

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If each side of a regular pentagon equals 4 feet what is the perimeter

coldgirl [10]

In a regular polygon, all of the sides have the same length.

Pentagons have five sides. If one of the sides in a regular pentagon is 4 feet, then the rest will also be four feet. 5 sides that are all 4 feet long totals up to a 20-foot perimeter.

4 0

4 years ago

Read 2 more answers

Which is bigger a milliliter or a centimeter

Degger [83]

Centimeter is bigger.

7 0

3 years ago

Read 2 more answers

Suppose the mean SAT verbal score is 525 with a standard deviation of 100, while the mean SAT math score is 575 with a standard

Ipatiy [6.2K]

Answer:

The mean of the combined math and verbal scores is 1100, while the standard deviation is 141.

Step-by-step explanation:

Normal variables

Normal variables have mean $\mu$ and standard deviation $\sigma$

When we add normal variables, the combined mean is the sum of both means, and the standard deviation is the square root of the sum of both variances. The distribution is still normal.

In this question:

Verbal: $\mu_{V} = 525, \sigma_{V} = 100$ .

Math: $\mu_{M} = 575, \sigma_{M} = 100$

Combined:

$\mu = \mu_{V} + \mu_{M} = 525 + 575 = 1100$

$\sigma = \sqrt{\sigma_{V}^{2}+\sigma_{M}^{2}} = \sqrt{100^2 + 100^2} = 141$

The mean of the combined math and verbal scores is 1100, while the standard deviation is 141.

6 0

3 years ago

Simplify the expression completely.<br><br> 16x-12x

romanna [79]

These are like terms, meaning that they are completely the same disregarding the coefficient.

To combine like terms, add the coefficients.
16+(-12)=4

Final answer: 4x

6 0

4 years ago

Timed help asap free 30 points after if correct find the value of the polynomial x^2-3xy+1/2 y^2 if x=3,y-2

BARSIC [14]

Answer:

Ans: 29

Step-by-step explanation:

soln:

Given,

x=3 and y=-2

Now,

x^2-3xy+1/2y^2

= 3^2-3×3×(-2) +1/2(-2)^2

= 9+18+4/2

= (18+36+4) /2

= 58/2

= 29 Ans

7 0

3 years ago