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iren2701 [21]
3 years ago
13

Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of the function y = 2x2 + 4x –3.

Mathematics
1 answer:
Tpy6a [65]3 years ago
7 0
A graphing calculator shows the 4th selection to be appropriate.

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Lines m and n are parallel. find the value of x.<br> A. 15<br> B. 20<br> C. 65<br> D. 115
torisob [31]

Answer:

Option B, x = 20

Step-by-step explanation:

<u>Step 1:  Make an equation</u>

The values of 65 degrees and (3x + 5) are equal.

65 = 3x + 5

<u>Step 2:  Subtract 5 from both sides</u>

65 - 5 = 3x + 5 - 5

60 = 3x

<u>Step 3:  Divide both sides by 3</u>

60 / 3 = 3x / 3

<em>20 = x</em>

<em />

Answer:  Option B, x = 20

6 0
3 years ago
Read 2 more answers
A construction crew can dig a pit at a rate of 1914 meters per hour. How deep can they dig in 6 hours?
hichkok12 [17]

Answer:

11484m

Step-by-step explanation:

if 1914 = 1hour

Then 6hours= ?

6/1 ×1914

= 11484m

4 0
2 years ago
A sweatshirt that was originally priced at $42.50 has been marked down to $34.00.
Arte-miy333 [17]

Answer:

the answer is 20%.

Step-by-step explanation:

all you have to do is multiply 42.50x.20 and it gives you 8.5. to check your answer you subtract 34.00 from 42.50 and you get 8.5 as well. hope this helps!

5 0
3 years ago
PLEASE HELP
GuDViN [60]
The equation of a circle with center (h,k) and radius r is
(x-h)²+(y-k)²=r²
so
given center is (3,-4)
(x-3)²+(y-(-4))²=r²
(x-3)²+(y+4)²=r²
find r² by subsitutiong the point taht it passes through which is (6,5)

so
(6-3)²+(5+4)²=r²
3²+9²=r²
9+81=r²
90=r²
so

(x-3)²+(y+4)²=90 is da equation

4th equation
7 0
3 years ago
Help pls!! this is a presentation I’m doing in class and I NEED this completed rn, ASAP!!! . What I need is just the answers for
snow_lady [41]

15. 70° because a right angle is 90° and we have the angle of ADB which is 20°. So 90°-20°=70°.

16. 70° because angle PSQ is 60° and angle QSR is 10°. So 60°+10°=70°.

17. 55° because it says it in the explanation. I assume this is a typo and they meant to ask the measurement of ADC and in that case it would be 130° because angle ADB is 75° and angle BDC is 55°. 75°+55°=130°.

18. 40° because angle PSQ is a right angle which means it's 90°. So 130°-90°=40°.

19. 140° because angle ADB is 120° and angle BDC is 20° so 120°+20°=140°.

20. 125° because again it's in the explanation. But if it's a typo and they meant what is the measurement of PSQ then it is 50° because PSR is 125° and QSR is 75° so 125°-75°=50°.

Hope this helps! :)

5 0
3 years ago
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