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Dahasolnce [82]
4 years ago
10

Find the value of a . A.18 B.21 C.20 D.17

Mathematics
1 answer:
Helen [10]4 years ago
8 0

Answer:

a =18

Step-by-step explanation:

The two angles are vertical angles and vertical angles are equal

6a +11 = 2a+83

Subtract 2a from each side

6a-2a +11 = 2a-2a+83

4a +11 =83

Subtract 11 from each side

4a +11 -11 = 83-11

4a = 72

divide each side by 4

4a/4 = 72/4

a =18

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PLEASE, PLEASE HELP!!! WILL MARK BRAINLIEST!!!
Irina18 [472]

Rewrite the original equation as:

Log(4x^2) - log(3yz)

Rewrite log(4x^2) as log(4) + log(x^2)

Rewrite log(4) as 2log(2)

Rewrite log(x^2) as 2log(x)

Separate log(3yz) into 3 logs: log(3), log(y) and log(z)

Now combine them to get:

2log(2) + 2log(x) - log(3) - log(y) - log(z)

5 0
4 years ago
4<br> 920<br> 26°<br> ?<br> 74°<br> find the missing angle.
lozanna [386]

9514 1404 393

Answer:

  44°

Step-by-step explanation:

The sum of the marked angles on the right is equal to the sum of the marked angles on the left:

  ? + 74 = 92 + 26

  ? = 92 +26 -74 = 44

The missing angle is 44°.

_____

<em>Additional comment</em>

The vertical angles in the center of the figure are v = 62°, the measure required to bring the total to 180° in each triangle. We have shortcut the equation(s) ...

  ? + 74 + v = 180 = 92 + 26 + v

by subtracting v from both sides, giving ...

  ? +74 = 92 +26

7 0
3 years ago
If a+b=5 and a-b=3 then b=?
adell [148]

Lets use elimination to solve the system of equations. We do this by adding the two equations terms together.


a + b = 5

a - b = 3

(a + a) + (b + (- b)) = (3 + 5)

2a + 0 = 8

We can then solve this new equation for a.


2a = 8


a = 4


After this, we can plug in the value of a into one of the equations and solve for b.


a + b = 5


4 + b = 5


b = 1


You're correct, the answer is 1.

4 0
4 years ago
Read 2 more answers
Weight of three books are 23⁄4 kg, 35⁄6 kg and 23⁄8 kg. Find the total weight of all the three books.​
Xelga [282]

Answer:

12.54kg

Step-by-step explanation:

(23/4 + 35/6 + 23/8)kg

= \frac{(23 \times 6) + (35 \times 4) + (23 \times 3)}{24}

= \frac{92 + 140 + 69}{24}

= 301/24

= 12.54kg

5 0
3 years ago
What is the value of the expression -(-4)(-6)-3/5(10+15)
ladessa [460]

Answer:

-(-4)(-6)*3/5(10+15)

when there is a (-) in front of an expression in parentheses, change the sing of each term in the expression.

4*(-6)*3/5*(10+15)

Add the numbers (10+15)

4(-6)*3/5*25

multiplying an odd number of negative terms makes the product negative

-4*6*3/5*25

reduce the number with the greatest common factor 5

-4*6*3*5

calculate the product

solution

-360

8 0
4 years ago
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