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3 years ago

15

What is the area of a triangle whose base is 15 centimeters and whose height is 10 centimeters

2 answers:

Mrac [35]3 years ago

8 0

Answer: 75

Step-by-step explanation:

15x10=150/2=75

Kazeer [188]3 years ago

7 0

Answer:

75

Step-by-step explanation:

o find the area of a triangle, multiply the base by the height, and then divide by 2. The division by 2 comes from the fact that a parallelogram can be divided into 2 triangles. For example, in the diagram to the left, the area of each triangle is equal to one-half the area of the parallelogram.

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Solve the equation using square roots 2x^2=242

tia_tia [17]

$2x^2=242\qquad|:2\\\\x^2=121\qquad|\sqrt{(\ldots)}\\\\\\\boxed{x=11\qquad\vee\qquad x=-11}$

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3 years ago

Simplify: square root of 81+18<img src="https://tex.z-dn.net/?f=%5Csqrt%7B7%7D" id="TexFormula1" title="\sqrt{7}" alt="\sqrt{7}"

Lemur [1.5K]

$\sqrt{81 \: + \: 18 \sqrt{7} \: + \: 7}$

Factor the indicated expression:

$\sqrt{(9 \: + \: \sqrt{7} ) ^{2} }$

Simplified the index, the root and also the exponent using the number 2.

$\boxed{ \bold{9 \: + \: \sqrt{7} }}$

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2 years ago

Quadrilateral ABCD has vertices A(1,0) B(5,0) C (7,2) D(3,2). Use slope to prove that ABCD is a parallelogram.

Galina-37 [17]

Answer:

$AD \parallel BC$

$AB \parallel CD$

Step-by-step explanation:

The vertices of quadrilateral ABCD are A(1,0) B(5,0) C (7,2) D(3,2).

The slope of side AB is

$M_{AB}=\frac{0-0}{5-1} =\frac{0}{4}=0$

The slope of side BC is

$M_{BC}=\frac{2-0}{7-5} =\frac{2}{2}=1$

The slope of side CD is

$M_{CD}=\frac{2-2}{3-7} =\frac{0}{-4}=0$

The slope of AD is

$M_{AD}=\frac{2-0}{3-1} =\frac{2}{2}=1$

$AD \parallel BC$

$AB \parallel CD$

We see that the opposite sides of the quadrilateral ABCD are equal.

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3 years ago

Is the underlined verb in the sentence regular or irregular? We arrived early to our football game last night. A. irregular

lapo4ka [179]

Regular verb in that sentence

6 0

3 years ago

Read 2 more answers

Round the following whole number to the nearest thousand.<br> 9474

Alja [10]

Answer:

9,000

Step-by-step explanation:

9474

Locate the thousands place:

<u>9</u>474

Check the number to the right:

9<u>4</u>74

If the number is greater than or equal to 5, we round up. If the number is less than or equal to 4, we round down.

Since there is a '4', we round down.

9474 ≈ 9000

Hope this helps.

4 0

3 years ago