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djverab [1.8K]
1 year ago
9

Factorise fully 8x2-4x

Mathematics
1 answer:
choli [55]1 year ago
8 0

Answer:

4x(2x-1)

Step-by-step explanation:

Using GCF, you can be able to take out a factor of 4x from 8x^2 and 4x.

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Jasmine is 20 years old. Her brother Zac is 6 years more than half her age. Which of the following is the correct expression for
Vitek1552 [10]

Answer:

(20 ÷ 2) + 6

Step-by-step explanation:

5 0
2 years ago
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Assuming the volume of a trigonal prism, who has a side of 10cm and a length of 20 cm, is 866cm^3, what is its surface area?
Leno4ka [110]

The surface area of the triangular prism is 686.6 cm².

Step-by-step explanation:

Step 1:

The volume of a triangular prism can be determined by multiplying its area of the triangular base with the length of the prism.

The base triangle has a base length of 10 cm and assume it has a height of h m.

The volume of the prism= \frac{1}{2} (b)(h) (length) = \frac{1}{2} (10)(h)(20) = 866.

h = \frac{866(2)}{10(20)} = 8.66.

The height of the triangle is 8.66 cm.

Step 2:

The surface area of the triangle is obtained by adding all the areas of the shapes in the prism. There are 2 triangles and 3 rectangles in a triangular prism.

The triangles have a base length of 10 cm and a height of 8.66 cm. A triangles area is half the product of its base length and height.

The rectangles all have a length of 20 cm and a width of 10 cm. The area of a rectangle is the product of its length and width.

The area of the 2 triangles = 2 [\frac{1}{2} (10)(8.66)] = 86.6.

The area of the 3 rectangle = 3[(20)(10)] = 600.

Step 3:

The surface area of the triangular prism = 86.6 + 600 = 686.6.

The surface area of the prism is 686.6 cm².

6 0
3 years ago
Please quickly help me!!
Ainat [17]

Look at the picture.

Answer:

\angle ADB\cong\angle ACB\\\\\angle DAC\cong\angle DBC

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Question 1 of 5 The Ridgeport school district collected data about class size in the district. The table shows the class sizes f
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Answer:

C is the correct answer

Step-by-step explanation:

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The answer is 4, first you the $27 and subtract the $3, then u take 24 and divide it by 6
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