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IrinaVladis [17]
2 years ago
6

Solve the quadratic equation by completing the square x²+12x+26=0

Mathematics
1 answer:
vova2212 [387]2 years ago
4 0

Answer:

x={-13,-2}

Step-by-step explanation:

(x+13)(x+2)=0

x+13=0

x=-13

x+2=0

x=-2

x={-13,-2}

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A pilot can fly 2100 miles with the wind in the same time she can fly 1890 miles against the wind. If the speed of the wind is 2
Anna007 [38]

Answer:

475 mph

Step-by-step explanation:

Distance = rate × time

time = distance / rate

If x is the speed of the plane in still air:

2100 / (x + 25) = 1890 / (x − 25)

Cross multiply:

2100 (x − 25) = 1890 (x + 25)

Distribute and solve:

2100x − 52500 = 1890x + 47250

210x = 99750

x = 475

5 0
3 years ago
What is the quantity proportional to 18/6
mario62 [17]

Answer:

18/6=3

Step-by-step explanation:

18/6÷3=6/2

6/2=3

7 0
3 years ago
Which three statements describe how to find the product of 5×10^3
Vedmedyk [2.9K]
5x10x1 electrical and electrical equipment for electrical
7 0
3 years ago
Find an explicit formula for the geometric sequence −1,−7,−49,−343,...-1\,,-7\,,-49\,,-343,... −1,−7,−49,−343
umka21 [38]
So we see it times 7 each time
starting with -1

geometric
an=a1(r)^(n-1)
a1=first term
r=common ratio
first term is -1
r=7

a_n=-1(7)^{n-1} is the formula
also can look like this:
f(n)=-1(7)^{n-1}
7 0
3 years ago
A 14-ounce bottle of Nesquik chocolate milk cost $1.89. What is the cost per ounce?
CaHeK987 [17]

Answer:

Step-by-step explanation:

1.89/14= .135

estimating to the nearest cent would be .14

8 0
2 years ago
Read 2 more answers
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