3 years ago

Grades 9 – 12

Mathematics

1 answer:

adelina 88 [10]3 years ago

4 0

Bla-bla-bla bla-bla bla-bla-bla

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MATH HELP. ^^ Answer the two pages below.

horsena [70]

52% of 210= 109.2

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3 years ago

Which of the four Venn diagrams represent (X U Y)?

dusya [7]

X or Y diagram is the answer to this question

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2 years ago

Which equation represents y= -x^2 + 6x + 7 in vertex form ?

Drupady [299]

we are given

$y= -x^2 + 6x + 7$

we can use vertex form parabola formula

$y= a(x-h)^2+k$

so, we can complete x square

$y= -(x^2 - 6x - 7)$

$y= -(x^2 - 6x - 7+3^2-3^2)$

$y= -(x^2 - 6x +3^2-16)$

$y= -(x-3)^2+16$

so, option-A........................Answer

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3 years ago

If 50% is 30 what is 75%

Gemiola [76]

Answer:

$50\% = 30 \\ 70\% = x \\ \\ 50\%x = 30 \times 70\% \\ x = \frac{30 \times 70\%}{50\%} \\ x = 42 \\ hence \: 70\% \: is \: 42$

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2 years ago

A square pyramid has a height of 12 units and a volume of 256 units3. If a square prism has the same the base area and volume as

Juliette [100K]

Answer:

4 units

Step-by-step explanation:

The volume of a square pyramid is (a²)*h/3

256=a²*12/3

256=a²*4

256/4=a²

64=a²

a=8

Now we know that the square is 8 by 8.

The volume of a square prism is a²h

256=64h

256/64=h

h=4

Also, a square pyramid is 1/3 the volume of a square prism.

12÷3=4

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2 years ago