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masha68 [24]
3 years ago
6

9) Which solution is correct? Be sure to check for extraneous solutions.

Mathematics
1 answer:
shutvik [7]3 years ago
3 0

(x+3)2   =    x2+6x+9

 (x+2)2   =    x2+4x+4

  (x-1)2   =    x2-2x+1

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Pls help I tried basic answers like 50+50+80 =180 but it’s wrong so pls help
PilotLPTM [1.2K]

Answer:

x = 65 degrees

Step-by-step explanation:

x° + x° + 50° = 180°

2x + 50° = 180°

2x = 180° - 50°

2x = 130°

x = 130°/2

x = 65°

5 0
3 years ago
Please Answer These!
maxonik [38]
79.30 ---- 100%
The while store is discounted by 12% So subract 12 from 100

100-12 = 98

We have to figure out what 88% is

79.30 ---- 100%
X ------------ 88%

Cross Multiply

79.3× 88 = 100x

6978.4 = 100X

69.784 is without taxes

69.784 = 100% {100% because it is the total price.}

69.784 = 100%
X --------- 6.25%

Cross Multiply

69.784 × 6.25 = 100X
436.15 = 100 X
X = 4.3615


69.784 + 4.3615
74.15 is the answer


5 0
3 years ago
PLEASEEEEE I NEED HELP WITH THIS!!
AysviL [449]
The answer is for x is x = 60
5 0
3 years ago
Read 2 more answers
For an activity in class, students used pieces of string to measure roads on a map. They used a map scale to determine the dista
jeka57 [31]

Answer:

C 152

Step-by-step explanation:

Beacuse it is. Hope that helps

4 0
3 years ago
Read 2 more answers
What is the slope intercept from of the equation of the line that that passes through the points (-3, 2) and (1, 5)
viva [34]

The slope-intercept form of a line:

y=mx+b\\\\m=\dfrac{y_2-y_1}{x_2-x_1}\to slope\\\\b\to y-intercept

We have:

(-3,\ 2)\to x_1=-3,\ y_1=2\\(1,\ 5)\to x_2=1,\ y_2=5

Substitute:

m=\dfrac{5-2}{1-(-3)}=\dfrac{3}{4}

y=\dfrac{3}{4}x+b

Put the values of coordinates of the point (1, 5) to the equation of a line:

5=\dfrac{3}{4}(1)+b\\\\5=\dfrac{3}{4}+b\qquad|-\dfrac{3}{4}\\\\b=4\dfrac{1}{4}

Answer: y=\dfrac{3}{4}x+4\dfrac{1}{4}


5 0
3 years ago
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