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kodGreya [7K]
4 years ago
14

Plz help me with this question

Mathematics
1 answer:
adelina 88 [10]4 years ago
5 0

Answer:

a = 111°

b = 69°

c = 69°

Step-by-step explanation:

Opposite angles of a parallelogram are congruent, so b = 69°.

Corresponding angles are congruent, so c = 69°.

Supplementary angles add up to 180°, so a = 180° − 69° = 111°.

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Simplify the Expression: 3(x - y + 5)
sveta [45]

Answer:

3x - 3y + 15

Step-by-step explanation:

Multiply everything inside the parenthesis by the outside number.

3 times X gives us 3x

3 times -Y gives us -3y

3 times 5 gives us 15

6 0
3 years ago
After a special medicine is introduced into a petri dish full of bacteria, the number of bacteria remaining in the dish decrease
Crazy boy [7]

Answer:

  0.17

Step-by-step explanation:

The function can be rewritten as ...

  B(t) = 9300·((1/2)^6)^t = 9300·(1/2)^(6t)

In order to multiply the number of bacteria by 1/2, the value of the exponent 6t must be equal to 1:

  6t = 1

  t = 1/6 ≈ 0.166667 ≈ 0.17

The culture loses half its size every 0.17 seconds.

7 0
4 years ago
5) What is the correct unit for the following measurement?
zavuch27 [327]

Answer:

Celsius

Step-by-step explanation:

Temperature we use celcius, grams for mass, meter for length, liters & cubic centimetres are for volume

4 0
3 years ago
Point Q' is the image of Q (4,-6) is under a translation by 1 unit to the right.
alexandr1967 [171]

Answer:

The coordinates of point Q' would be (5, -6) after being translated 1 unit to the right.

Step-by-step explanation:

4 0
3 years ago
Kamila has a rectangular lawn that measures 80 by 150 feet. She wants to lay gravel made from colored rock in a border, 6 feet w
Zarrin [17]
Part 1) <span>Create a diagram that shows Kamila’s rectangular lawn and the gravel border. Assign variables to any unknown sides and label the diagram

see the attached figure  

Part 2)</span><span>Use your diagram to determine how many square feet of the gravel border will surround the lawn

area of the border=[162*92]-[150*80]----> 14904-12000-----> 2904 ft</span>²

Part 3) <span>Kamila decided that the depth of the gravel needs to be 2 inches. What is the total volume of gravel needed for the border?

we know that
1 ft-------> 12 in
 x--------> 2 in
x=2/12------> x=0.17 ft

volume of gravel needed=area of the border*deep of the gravel
</span>volume of gravel needed=2904*0.17----> 493.68 ft³
<span>
Part 4)</span><span>A large bag of colored rock contains a cubic yard and costs $30. What is the total cost of the rocks needed for the border?
</span>
1 yd³--------> 27 ft³
x---------> 493.68 ft³
x=493.68/27-----> 18.28 yd³

if 1 yd³----------> cost $30
 18.28 yd³------> x
x=18.28*30------> x=$548.53

the answer Part 4) is 
$548.53

6 0
4 years ago
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