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Rainbow [258]
2 years ago
12

Please i need help with this

Mathematics
1 answer:
Goshia [24]2 years ago
8 0

Answer:

B.

Step-by-step explanation:

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X^2+4x=-3<br>what would be the steps to find the answer of this equation?<br><br>to find x
Verizon [17]
X^2+4x=-3
x^2+4x+3=0
(x+1)(x+3)=0
x+1=0 so x=-1
x+3=0 so x=-3
so the solution is x=-3,-1
Hope this helped! Please rate my answer if I helped you! Any questions please feel free to ask! Thank you so much!
7 0
3 years ago
Three boys and six girls are being seated in a row of nine chairs on a stage which are numbered from left to right. How many sea
OLga [1]

Answer:

A. 362,880

B. 4,320

C. 14,400

D. 21,600

Step-by-step explanation:

A.

If there are no restrictions as to how they are seated, then we have permutations of 9 elements and there are 9! (factorial of 9) = 362,880 different seating arrangements.

B.  

If the boys sit in the middle three seats, they can sit in 3!=6 different ways, the girls can sit then in 6!=720 different ways. By the fundamental rule of counting, there are 6*720 = 4,320 different seating arrangements.

C.

We now have arrangements of the type

g, g, x, x, x, x, x, x, g  

The three girls at the ends can be chosen in C(6;3) (combinations of 6 taken 3 at a time) =  

\large \frac{6!}{3!(6-3)!}=\frac{6!}{3!3!}=20

different ways. The 6 in the middle can be sit in 6!=720 different ways.

By the fundamental rule of counting, there are 20*720 = 14,400 different seating arrangements.

D.

Now we have arrangements

g,b,g,b,x,x,x,x,x

For the 1st position we have 6 possibilities, for the 2nd we have 3 possibilities, for the 3rd we have 5 possibilities and for the 4th we have 2 possibilities. For the last 5 we have 5!=120 possibilities.

By the fundamental rule of counting, there are 6*3*5*2*120 = 21,600 different seating arrangements.

3 0
3 years ago
Find the hupotenuse if the legs are 3 and 4
natita [175]

Answer:

None of these

Step-by-step explanation:

hypotenuse \\  =  \sqrt{ {3}^{2} +  {4}^{2}  }  \\  =  \sqrt{9 + 16}  \\  =  \sqrt{25}  \\  = 5

3 0
3 years ago
Read 2 more answers
Need help real fast.
ira [324]

Answer:

option 4

Step-by-step explanation:

using the equation stated above

1st term = -6+(1-1=0)*(6)=-6

4th term= -6+(4-1=3)*6=12

10th term= -6+(10-1=9)*6=48

7 0
3 years ago
Evaluate this expression for the given value of the variable 4 (d+7);d=-2
Paha777 [63]

Exact Form:

d

=

−

7

−

√

47

2

,

−

7

+

√

47

2

d

=

-

7

-

47

2

,

-

7

+

47

2

Decimal Form:

d

=

−

0.07217269

…

,

−

6.92782730

…

6 0
2 years ago
Read 2 more answers
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