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disa [49]
3 years ago
14

Solve by completing the square. ​ x2+12x+4=0 ​​​​​​​

Mathematics
1 answer:
Vitek1552 [10]3 years ago
3 0

Answer:

Step-by-step explanation:

2x+12x+4=0

14x+4=0

14x=-4

 x= -4/14

 x=-2/7

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Problem 2 Previous Problem Problem List Next Problem (1 point) Determine ifv is an eigenvector of the matrix A No 1 5 0 0 7 0 -2
MrRa [10]
I’m sorry i don’t know the answer
5 0
3 years ago
Indiras spring garden has half as many tulips as daffodils and three times as many hyacinths as tulips. If there are a total of
kow [346]

Indira is having 34 tulips, 68 daffodils and 102 hyacinths , altogether 204 flowers in her spring garden.

Given, In Indira's springtime garden, there are three times more hyacinths than tulips and half as many daffodils as tulips.

let the number of tulips be = x

    the number of daffodils be = y

    the number of hyacinths be = z

hence according to the question,

tulips are (x) = 1/2 (y) = y/2

hyacinths are (z) = 3(x) = 3x

therefore, total flowers = 204

tulips ₊ daffodils ₊ hyacinths = 204

y/2 ₊ y ₊ 3x = 204

substitute x value in the above equation.

y/2 ₊ y ₊ 3(y/2) = 204

take LCM

y ₊ 2y ₊ 3y = 408

6y = 408

y = 408/6

y = 68

hence the number of daffodils is 68.

now substitute y value in x = y/2

x = 68/2

x = 34

now substitute x value in z= 3x

z = 3(34)

z = 102

hence we get the number of tulips,daffodils and hyacinths as 34 , 68 and 102 respectively.

Learn more about Solving equations here:

brainly.com/question/13729904

#SPJ9

6 0
1 year ago
Which numbers are solutions to the inequality -3x-3<6? Check all that apply
bogdanovich [222]

Answer:

0, 2, and 4.

Step-by-step explanation:

-3x-3≤6

Add 3 on both sides of the inequality.

-3x≤9

Divide both sides of the inequality by -3.

x≥3

The solutions possible for x can be 0, 2, and 4.

7 0
3 years ago
A bird leaves its nest and travels 18 miles per hour downwind for 2 hours. On the return trip, the bird travels 3 miles per hour
Darya [45]

Answer:

Step-by-step explanation:

Let y represent the distance travelled downwind by the bird from its nest.

Distance = speed × time

A bird leaves its nest and travels 18 miles per hour downwind for 2 hours. Distance covered in travelling downwind is

2 × 18 = 36 miles

On the return trip, the bird travels 3 miles per hour slower and has 5 miles left after 3 hours. It means that the speed at which the bird travelled is 18 - 3 = 15 mph. Also, the distance covered in 3 hours is 36 - 5 = 31 miles. Therefore,

a) distance of the entire trip is

36 + 36 = 72 miles

b) time spent in travelling downwind from its nest is 2 hours

Time for the return part is

3 hours + 5/15 = 3 + 1/3 × 60 minutes

= 3 hours 20 minutes

Total time for the trip is

2 hours + 3 hours 20 minutes

= 5 hours 20 minutes 0 seconds

7 0
4 years ago
How do you get the answer for 10 millimeters increased by 30%
tiny-mole [99]
First you have to find what 30% of ten is, and then add it to the 10. So how do you find 30 % of 10? In math...

"of" means ×
"is" means =

30% of 10 is
30 % × 10 =

change 30% to a decimal by dividing by 100 ( move the decimal to the left 2 places)

.30 × 10 = 3

So 30% of ten is 3. Now since we are increasing by 30%, we have to add it to the original value, 10.

3 + 10 = 13

So 10 millimeters increased by 30% is

13 millimeters
8 0
3 years ago
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