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Free_Kalibri [48]
3 years ago
6

Need help with this question!

Mathematics
2 answers:
Amiraneli [1.4K]3 years ago
6 0

Step-by-step explanation:

a=(x + 3)

b=2x

c=(2x + 2.4)

(x + 3)^2 + 2x^2 = (2x + 2.4)^2

=3x^2 + 6x + 9 = 4x^2 + 9.6x +5.76

= -x^2 - 3.6x + 3.24 = 0

now we have a quadratic equation so

a= -x

b= -3.6

c= 3.24

x=-\frac{3.6 + \sqrt{25.92} }{2} , x=\frac{\sqrt{25.92} -3.6}{2}

rosijanka [135]3 years ago
3 0
Not sure:((((((( sorrryyyy
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HELP PLEASE AND THANK YOU!!
Aleonysh [2.5K]
4/7 make into slope form which will get you that
7 0
3 years ago
what is the probability of drawing two blue cards if the first card is not included in the second draw? simplify your answer com
BlackZzzverrR [31]

Answer:

5/14

Step-by-step explanation:

The total number of cards is 8

There are 5 blue cards

P(1st card is blue) = blue/total = 5/8

We take away a blue card

The total number of cards is 7

There are 4 blue cards

P(2nd card is blue) = blue/total = 4/7

The probability of blue blue is P(blue blue ) =

P(1st card is blue)*P(2nd card is blue) =

5/8* 4/7

20/56

We can divide the top and bottom by 4

5/14

3 0
3 years ago
Solve 5^2x+1-5^2x=150 with steps
tiny-mole [99]

Answer:

x = 2.98

Step-by-step explanation:

5^2x + 1 - 5^2x = 150

25x + 1 + 25x = 150

50x + 1 = 150

50x = 149

x = 2.98

5^2x + 1 - 5^2x = ?

5^2(2.98) + 1 - 5^2(2.98) = ?

25(2.98) + 1 + 25(2.98) = ?

74.5 + 1 + 74.5 = ?

149 + 1 = ?

150 = ?

4 0
3 years ago
Read 2 more answers
If c(x) = 4x - 2 and d(x) = x + 5x what is (c×d)(x)?​
g100num [7]

Answer:

24x^2 - 12x

Step-by-step explanation:

C=4x -2

D=x + 5x

(4x - 2) * (x +5x)

4x^2 + 20x^2 - 2x - 10x

=24x^2 - 12x

5 0
3 years ago
1 1/5 + 3/4 - (-3 3/5) - (-2 1/4)
babymother [125]

Step-by-step explanation:

= 1 \frac{1}{5}  +  \frac{3}{4}  - ( - 3 \frac{3}{5} ) - ( - 2 \frac{1}{4} )

= 1 \frac{1}{5}  +  \frac{3}{4}  + 3 \frac{3}{5}  + 2 \frac{1}{4}

= (1 + 3 + 2) + ( \frac{1}{5} +  \frac{3}{4} +  \frac{3}{5}   +  \frac{1}{4}  )

= 6 + ( \frac{4 + 15 + 12 + 5}{20} )

=  6 +  \frac{36}{20}

= 1 + 6 +  \frac{16}{20}

= 7 +   \frac{4}{5}

= 7 \frac{4}{5}

8 0
3 years ago
Read 2 more answers
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