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Tamiku [17]
4 years ago
12

X^2 + 4x + 4 = 0please help!! I missed class! show steps!​

Mathematics
1 answer:
Stels [109]4 years ago
7 0

Answer:

x= -2

Step-by-step explanation:

Step 1. In order to find the zeros of the function, we must factor it.

Step 2. To factor this, we have to find  two numbers that multiply to 4 and add to 4 which is 2 ( 2*2=4 and 2+2=4)

step 3. 0=(x+2)(x+2)

Step 4 make (x+2) equal to zero and solve which gives us -2, so -2 =x.

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If it takes 7.1 pounds of seed to plant one acre of grass, how many acres can be planted with 9.94 pounds of seed?
AlexFokin [52]

Answer:

70.574

Step-by-step explanation:

7.1 × 9.94= A

9.94

7.1

-------

70.574

A= 70.574

(when multiplying decimals do not line up the dot and solve it as if there was no decimals point. when you get your answer count the amount of digits on the right side of the number going to the left on your answer.

in this case there are three digits on the right side of the decimals you count three spaces to the left of your answer wich is 574. put the decimal point infront of the 5 and you get you answer. 70.574

3 0
3 years ago
Amelie is shopping for children's books and puzzle books. She wants to purchase at least 2 more children's books than puzzle boo
Evgen [1.6K]

Answer:

X = 8.5, Y = 6.5

Step-by-step explanation:

X = # of children's books

Y = # of puzzle books

Amelie wants to buy <u>2 more</u> children's books than puzzle books.

15 - 2 = 13 (Save the 2)

13 / 2 = 6.5

6.5 + 2 = 8.5

So; 8.5 + 6.5 = 15

X = 8.5

Y = 6.5

7 0
3 years ago
What are the solutions of 3x2 + 6x + 6 = 0?
AlladinOne [14]
The solutions or roots to this equation is found by solving for x. We can do this a couple ways either by FOIL or quad formula

3x^2+6x+6=0
3(x^2+2x+2)=0

x^2+2x+2=0 we cant FOIL this out so we use the quad formula

x= [(-b+\-sqrt(b^2-4ac))/2a]

x= -2+\- sqrt(4-4(1)(2))/2(1)
x= -1 +i , -1 - i

So we have complex roots since our quad formula returned a negative number. Whenever the quad formula answer is positive we have two roots/solutions, when it is zero we have one root/solution, and whenever it is negative we have Complex roots/solutions

Hope this helps. Any questions please just ask. Thank you.
7 0
3 years ago
What is opposite negative 7 5 over 12
coldgirl [10]
The opposite of negative 75 over 12? The answer would be negative 16
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7 0
4 years ago
The math club is electing new officers. There are 5 candidates for president, 6 candidates for vice-president, 2 candidates for
Andre45 [30]

Answer:

180 different combinations

Step-by-step explanation:

To find the number of different combinations possible, We first find the number of possibilities for each place, and then multiply all possibilities.

Number of possibilities for president: 5

Number of possibilities for vice-president: 6

Number of possibilities for secretary: 2

Number of possibilities for treasurer: 3

Number of different combinations: 5*6*2*3 = 180

(We can form 180 different groups of 1 president, 1 vice-president, 1 secretary and 1 treasurer)

8 0
4 years ago
Read 2 more answers
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