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bija089 [108]
3 years ago
10

Solve this equation 15+8x=31

Mathematics
1 answer:
balandron [24]3 years ago
4 0
The answer is x = 2!
The work is provided in the image below!

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5/9 ÷ 2/3<br> PLEASE HELP I AM ACTUALLY NOT SMART
SSSSS [86.1K]

Answer:

5/6

Step-by-step explanation:

=5/9 * 3/2

simplify

5/3 * 1/2

=

5/6

8 0
3 years ago
Work out the area of 5e parallelogram
Vedmedyk [2.9K]

Answer: The area is 268 cm squared (approximately)

Step-by-step explanation: The area of a parallelogram is given as ;

Area = b x h

Where b is the base and h is the vertical height. However the vertical height is not given, so we shall apply the trigonometric ratio to determine the vertical height. If we draw a straight line from the the top right vertex down to the base, we would have constructed a right angled triangle with hypotenuse 13cm, and reference angle 79 degrees. We can now calculate the vertical height as follows;

Sin 79 = opposite/hypotenuse

Sin 79 = h/13

By cross multiplication we now have

Sin 79 x 13 = h

0.9816 x 13 = h

12.76 = h

With the vertical height now known, we can calculate the area as follows

Area = b x h

Area = 21 x 12.76

Area = 267.96 cm squared

7 0
3 years ago
The explicit formula for a sequence is
Alexandra [31]

Answer:

28

Step-by-step explanation:

Let n = 21, and evaluate the expression.

a_n = -2 + \dfrac{3}{2}(n - 1)

a_{21} = -2 + \dfrac{3}{2}(21 - 1)

a_{21} = -2 + \dfrac{3}{2}(20)

a_{21} = -2 + \dfrac{3}{1}(10)

a_{21} = -2 + 30

a_{21} = 28

3 0
3 years ago
The number sentence 4x6=6x4 is an example of what property
Nikitich [7]
Commutative Property states ab = ba
4 0
3 years ago
HELP ME PLEASEEEEEE ASAPPPPPP
krok68 [10]

your answer is 10 1/8.

I hope this helps

4 0
3 years ago
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