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OLga [1]
3 years ago
10

7)

Mathematics
1 answer:
yuradex [85]3 years ago
7 0

Answer:

9 blue marbles

Step-by-step explanation:

12 divided by 4 = 3

3x3=9

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Read 2 more answers
Ana angle measure 79.8 degrees less than the measure of it’s complementary angle what is the measure of each angle
RUDIKE [14]

Answer:

x = 129.8 degrees,  y = 50.2 degrees,    x + y = 180

Step-by-step explanation:

Let's say you have 2 supplementary angles, x and y

So x + y = 180

if x is 79.8 degrees less than the measure of a supplementary angle, then x = y - 79.8

Putting this into our x + y = 180 equation, we get

(y - 79.8) + y = 180

2y - 79.8 = 180

2y = 180 + 79.8

2y = 259.8

y = 259.8/2 = 129.9 degrees.

so x = 129.9 - 79.6 = 50.3 degrees.

See if it worked. x = 129.9 degrees,  y = 50.3 degrees,    x + y = 180 so we found the correct two angles! :-)

8 0
2 years ago
The hypotenuse of a triangle is 30 cm long and the length of leg A is 15 cm. How long is leg B? (round the the nearest tenth) PL
makvit [3.9K]

Answer:about 26

Step-by-step explanation:

30^2-15^2

Square root it 25.98 about 26

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3 years ago
Which expression is equivalent to 91+39 ?
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Answer:

130

Step-by-step explanation:

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