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nalin [4]
3 years ago
14

Whats the answers please​

Mathematics
1 answer:
Rzqust [24]3 years ago
4 0

Answer:

Since the ray bd is bisecting the angle abc, equate 3x + 4 to 7x - 20.

Step-by-step explanation:

3x + 4 = 7x - 20

x = 6

.. Therefore, angle abc = 3x + 4 + 7x - 20

= 18 + 4 + 42 - 20

= 44

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Nina knows that the average of the x-intercepts represents the line of symmetry for a quadratic function through the x-axis. Whi
Romashka [77]

Answer:

\bf \displaystyle\frac{5+1}{2}=\displaystyle\frac{6}{2}=3

Step-by-step explanation:

The x-intercepts are the values of x for which y=0, that is f(x)=0.

The x-intercepts of  

\bf f(x)=4x^2-24x+20

are the values of x such that

\bf 4x^2-24x+20=0

Divide both sides by 4 to simplify a little

\bf x^2-6x+5=0

Solve the quadratic equation

\bf x=\displaystyle\frac{-(-6)\pm\sqrt{(-6)^2-4*1*5}}{2*1}=\displaystyle\frac{6\pm\sqrt{36-20}}{2}=\\\\=\displaystyle\frac{6\pm\sqrt{16}}{2}=\displaystyle\frac{6\pm4}{2}

and you get the 2 x-intercepts

x =10/2  and x = 2/2  

or

x = 5 and x = 1

The average is the midpoint

\bf \displaystyle\frac{5+1}{2}=\displaystyle\frac{6}{2}=3

7 0
3 years ago
Read 2 more answers
Martin is buying inkjet cartridges that cost 22$ each.he has 100$ to pay for the cartridges.
Bumek [7]

Answer:

4.45 or 4 so b

Step-by-step explanation:

4 0
3 years ago
When rounding 72.631 to the hundredths place, Jack rounded to 72.64 and Tamar rounded to 72.63. Who is correct? EXPLAIN YOUR ANS
Mrrafil [7]

Answer:

Tamar

Step-by-step explanation:

Since we're rounding to the hundredths place, we need to see if the thousandths place is greater or equal to 5. Since it is less than 5, we round down to 72.63.

3 0
4 years ago
Read 2 more answers
Bob scored 1/3 of the number of points that bill scored if Bob scored 24 points how many points did Bill score
-Dominant- [34]

Answer:

Bill = 72

Step-by-step explanation:

Since Bob scored 1/3 of the number of points that Bill would have scored if Bob scored 24 points......

24 divided 1/3

= 72

3 0
3 years ago
Find the value g(-2), where g is defined below.<br> g(x) = 2x^2- 4x – 4
DanielleElmas [232]

Answer:

12

Step-by-step explanation:

For this question, simply plug in -2 for x:

g(-2)=2(-2)^2-4(-2)-4\\g(-2)=2(4)+8-4\\g(-2)=8+8-4\\g(-2)=12

Hope this helps!!

8 0
3 years ago
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