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Kruka [31]
3 years ago
15

There are eight marbles in a bag. Four marbles are blue (B), two marbles are red (R) and two marbles are green (G) Steve takes a

marble at random from the bag. What is the probability that Steve will take a blue marble.
Mathematics
1 answer:
inna [77]3 years ago
3 0

Answer:

1/2

Step-by-step explanation:

4 of the 8 marbles are blue:

4/8 = 1/2

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Craig has a building block in the shape of a rectangular pyramid. A net of which is shown below.
Alex787 [66]

Answer:

the answer is D: 294 sq. cm

Step-by-step explanation:

first you want to split the net into 4 triangles and 1 rectangle

a = 12 cm

b =  6 cm

d = 13 cm

calculate the surface area of the pyramid...

1st find the area of the rectangle base

Rectangle base area

b x a = (6 cm) (12 cm)

= 72 sq. cm

next find the area of the triangle on the left

Left triangle

1/2(b)(d) = 1/2 (6 cm)(13 cm)

= 1/2 (78 sq cm)

= 39 sq. cm

Since all the triangles are congruent (same), you will need to multiply by 2 to get the combined area of the triangle on the left and on the right.

Area of left & right triangles

= 2 (39 sq. cm)

= 78 sq. cm

Find the area of the triangle on the bottom

Bottom triangle area = 1/2 (a)(a)

= 1/2 (12 cm) (12 cm)

= 1/2 (144 sq. cm)

= 72 sq. cm

Since the bottom of the triangle is congruent to the top triangle, multiply that by 2 to get a combined area of the triangle on the bottom and top

Area of top & bottom triangles

2 (72 sq. cm) = 144 sq. cm

Finally...add the area of the 4 triangles to the area of the rectangular base

72 + 78 + 144 = 294 sq. cm

3 0
3 years ago
Complete the synthetic division problem below.
olga_2 [115]
2 I 1  6   -16
   I      2    16
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so the quotient is x+8. A is the answer.
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3 years ago
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Find the area; reduce to lowest terms:
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Area = length x width

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Find the product.
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(2p + 7)(3p-9)
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7 x -9=-63
6p^2 - 18p + 21p - 63
6p^2 + 3p -63 is the answer.

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4 years ago
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Can you help me with my work
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h(0)=3

The diver begins 3 meters above the water

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\begin{gathered} h(1)=8 \\ 8>6.75>3 \end{gathered}

The diver reaches a maximum height of 8ft

The

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1 year ago
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