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serious [3.7K]
3 years ago
12

I need help with these three questions

Mathematics
1 answer:
dusya [7]3 years ago
3 0
0.55 per pound
90 miles per day
16 oz for 3.19
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Find the slope of the line (-1,-4) , (-4,2)
Feliz [49]
Rise = -6
Run = 3

-6/3 = -2

Slope = -2

4 0
3 years ago
Help center of circle
Lelu [443]

Answer:

Center = (7, - 5)

Radius = 3

Step-by-step explanation:

{x}^{2}  +  {y}^{2}  + 14x - 10y + 65 = 0 \\  {x}^{2}  + 14x +  {y}^{2}  - 10 + 65 = 0 \\ ( {x}^{2}  + 14x +  {7}^{2})  -  {7}^{2}  +  ({y}^{2}  - 10y +  {5}^{2})  \\-  {5}^{2}  + 65 = 0 \\ (x + 7)^{2}  + (y - 5)^{2}  - 49 - 25 + 65 = 0 \\  (x + 7)^{2}  + (y - 5)^{2}  - 49  + 40= 0 \\   (x + 7)^{2}  + (y - 5)^{2}  - 9= 0 \\   (x + 7)^{2}  + (y - 5)^{2}   =  9 \\  (x + 7)^{2}  + (y - 5)^{2}   =   {3}^{2}  \\  equating \: it \: with \: \\ (x  -  h)^{2}  + (y - k)^{2}   =   {r}^{2}  \\  - h = 7 \implies \: h =  - 7 \\  - k =  - 5 \implies \: k = 5 \\ center = ( - h, \:  - k)  = (7, \:  \:  - 5) \\  \\ radius \: r = 3

7 0
3 years ago
Factor the expression over the complex numbers.<br><br> x2+50
Karo-lina-s [1.5K]
X^2 + 50

√x^2+ √50

x + 5√2

5√2 = ~7.07106

x + 7.07106 

x = -7.07106

hope this helps
8 0
3 years ago
Which direction does the decimal point move in when you divide by powers of 10 greater than 0?
4vir4ik [10]

Answer:

the left side is the answer

7 0
2 years ago
Read 2 more answers
WILL CHOOSE BRAINLIEST
fredd [130]
The volume of the first cube is (5h^2)^3, while the volume of the second cube is (3k)^3, so their total volume is (5h^2)^3 + (3k)^3. We can use the special formula for factoring a sum of two cubes:
x^3 + y^3 = (x + y)(x^2 - xy + y^2)
(5h^2)^3 + (3k)^3 = (5h^2 + 3k)((5h^2)^2 - (5h^2)(3k) + (3k)^2)
= (5h^2 + 3k)(25h^4 - 15(h^2)(k) + 9k^2)
This is the second of the given choices.
5 0
3 years ago
Read 2 more answers
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