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dsp73
4 years ago
8

Please need help on this thanks

Mathematics
1 answer:
iren2701 [21]4 years ago
3 0
C, 10 x 18 x 3 = 540
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(5n-1)(n+1)=0 factory
gavmur [86]

Answer:

5n^2+(4n)-1

Step-by-step explanation:

(5n-1)(n+1)=0

Lets find <em>n.</em>

(5n-1)(n+1)=0

FOIL it.

5n^2+5n-1n-1

Add/Substract similar factors

5n^2+(5n-1n)-1

5n^2+(4n)-1

Thats your answer.

3 0
3 years ago
In a survey conducted with 600 participants across the United States, 450 were found to have studied science in college. If we w
Dahasolnce [82]
Confidence interval of a population proportion is given by p^ + or - sqrt(p^(1 - p^)/n); where p^ = 450/600 = 0.75 and n = 600
99.7% convidence interval = 0.75 + or - 2.96 x sqrt(0.75(1 - 0.75)/600) = 0.75 + or - 2.96 x sqrt(0.75(0.25)/600) = 0.75 + or - 2.96 x 0.0177 = 0.75 + or - 0.0524 = 0.697 to 0.803 = 69.7% to 80.3%
7 0
3 years ago
-3(8x+3)-2(1-17x)-3(1+3x)=0
QveST [7]

Answer:

x=10

Step-by-step explanation:

-14x-9-2+34x-3-9x=0

x                             = 9 -2 + 3

x                             = 10

6 0
4 years ago
Hannah planted flowers next to the school playground. She planted 2 daisies, 3 sunflowers and 4 tulips.
posledela

Answer:

the ratio is 2:9

Step-by-step explanation:

there are a total of 9 flowers, she planted 2 daisies

5 0
4 years ago
Read 2 more answers
What is the y-value of the vertex 4x^2 +8x-8
galina1969 [7]

Answer:

-12

Step-by-step explanation:

Here the coefficients a, b and c are 4, 8 and -8 respectively.

                                                                     -b

A formula for the axis of symmetry is x = -------

                                                                      2a

                                 -8

... which yields x = --------- = -1

                                2(4)

Evaluating f(x) = 4x^2 + 8x - 8 at x = -1 yields   f(-1) = 4(-1)^2 + 8(-1) - 8 = -12.

The y-value of the vertex is -12.  Note that the vertex lies right smack on the axis of symmetry.

7 0
4 years ago
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