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solong [7]
3 years ago
9

3. Evaluate (-2)^3 + (-5+8)/3-15

Mathematics
1 answer:
Ann [662]3 years ago
3 0
The answer to this problem would be -22
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Please help asap!<br><br>the problem is in the picture
ladessa [460]

Given:

AB=6\ BC=r,\ CD=r,\ AD=12.

To find:

The value of r.

Solution:

We have,

AB=6\ BC=r,\ CD=r,\ AD=12.

We know that the radius is perpendicular to the tangent at the point of tangency

AD is the tangent and CD is the radius. So, CD is perpendicular to AD at point D, i.e., m\angle D=90^\circ.

Using Pythagoras theorem, we get

AC^2=AD^2+CD^2

(6+r)^2=12^2+r^2

36+12r+r^2=144+r^2

12r=144+r^2-36-r^2

On further simplification, we get

12r=108

r=\dfrac{108}{12}

r=9

Therefore, the value of r is 9.

8 0
2 years ago
What is 2 squared multiplied by two divided by 1/7
Nata [24]

Answer:

56

Step-by-step explanation:

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2 years ago
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Quick!!!! what do you call a sleeping bull. its geometry math homework 7th grade.
Bas_tet [7]
You call it a bull-dozer
6 0
2 years ago
A culture started with 5,000 bacteria. After 4
Tresset [83]

Answer: After 13 (12) hours, there would be 6,500 bacteria across the culture.

Step-by-step explanation:

The bacteria grew by 500 each 4 hours, so to know how much there would be 13 hours later:

Simple, add 500 bacteria to every 4 hours until you reach 13 hours. 4 = 5.5k, 8 = 6k, 12 = 6.5k. Now, 12 is closer to 13 than anything we would've gotten if we kept going.

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Given the following sets.
laila [671]

B = {a, b, c, d}

C = {0, a, 2, b}

B ∪ C = {a, b, c, d, 0, 2}

<h3>Answer: E)</h3>

Everything from the set B and everything from the set C give to one set. Duplicated elements are written only once.

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3 years ago
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