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Fiesta28 [93]
3 years ago
10

PLS HELP WILL MARK BRAINLIEST!!!!!!!! answer both questions (they are two separate questions)

Mathematics
2 answers:
klasskru [66]3 years ago
8 0

Answer:

C and A I beleive it is the answer not sure tho

Step-by-step explanation:

matrenka [14]3 years ago
3 0

Answer:

c.

d.

Step-by-step explanation:

First question:

(4x + 3y)(2x - 5y) =

= 8x² - 20xy + 6xy - 15y²

= 8x² - 14xy - 15y²

Answer: c.

Second question:

(2a + 3)² =

= (2a + 3)(2a + 3)

= 4a² + 6a + 6a + 9

= 4a² + 12a + 9

Answer: d.

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The sum of the roots of 3x 2 + 11x - 4 = 0 is<br><br> -11/3<br> -4/3<br> 11/3<br> 4/3
givi [52]

Answer:

The correct option is 1.

Step-by-step explanation:

If a quadratic equation is defined as

ax^2+bx+c=0             .... (1)

Then the sum of the roots is -b/a and the product of roots is c/a.

The given equation is

3x^2+11x-4=0          ... (2)

From (1) and (2) we get a=3, b=11 and c=-4.

The sum of roots is

\frac{-b}{a}=-\frac{11}{3}

The sum of roots is -\frac{11}{3}.

Therefore the correct option is 1.

5 0
4 years ago
a library has an average of 510 visitors on Sundays and 240 visitors on other days. The average number of visitors per day in a
serious [3.7K]

Answer:

285

Step-by-step explanation:

hi

personally this is how i would do this question but there are other ways.

i would start off by seeing how many sundays there are in the month (which is 5) then the number of other days which is 25. i'd then multiply 5 by 510 which is 2550. add that to 240 times 25 (which is 6000) and all of that together is 8550. divide that by the number of the days in the month (30) and then you'll get the daily avergae for the month

hope this helped:)

6 0
3 years ago
√(4x-9) + 1 =2√x <br>Find the value of X
Natasha_Volkova [10]
There are no values for x that make the equation true
7 0
3 years ago
Freddie ran for 5 days in a row. The line plot shows how much miles he ran each day. how far did he ran in total? Be sure to red
Blababa [14]

Answer:

8/4

Step-by-step explanation:

7 0
3 years ago
Which expression is equivalent to the one below?<br> (26 x 96) = 1814
vfiekz [6]

Answer:

the answer is A.

Step-by-step explanation:

(2^{6}×9^{6})÷18^{14}

2×9= 18

6+6= 12

18^{12}÷18^{14}

18^{12-14}= 18^{-2}

1/18^{-2}

3 0
3 years ago
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