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3 years ago

What is (4x-3)(7x+6)?

Mathematics

2 answers:

andre [41]3 years ago

5 0

Answer:

$28x^{2} + 3x - 18$

professor190 [17]3 years ago

4 0

Answer:

28x^2+3x-18

Step-by-step explanation:

Formula: (a+b)(a+b) = a^2 + a*b + a*b + b*b

Following this: 28x^2 -21x +24x -18

Then you combine like terms: 28^2 +3x-18

hope this helped!! :)

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A pizza buffet has prepared 15 pizzas to place on the line at the beginning of lunch at 11:00 a.m. The equation used to describe

Anit [1.1K]

Answer:

B. Every 16 minutes, 22 more pizzas were set out on the buffet.

Step-by-step explanation:

At 11:00 am, x would be equal to 0, and there would be 15 pizzas on the buffet line. Then, every 8 minutes, 11 more pizzas are added to the buffet line. So in 16 minutes, 22 pizzas will be added to the buffet.

$\frac{16}{8} =2\\(11)(2) = 22$

7 0

2 years ago

Is 7/9 greater than or less than 0.6

LekaFEV [45]

7/9 is greater because if you divide the fraction you will get 0.77777777...
(Which will go on forever)

compare:
(< or >)
0.7 ? 0.6

Well, by looking at both of them, you can easily tell that 0.7 is greater and 0.7=7/9, therefore, 7/9 is greater

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3 years ago

How many solutions does the following system of equations have?

olganol [36]

The answer would be two

8 0

4 years ago

Factor this equation<br> 4x^2+12x-7

Levart [38]

$4x^2+12x-7=0\\\\a=4;\ b=12;\ c=-7\\\Delta=b^2-4ac\\\\\Delta=12^2-4\cdot4\cdot(-7)=144+112=256 \ \textgreater \ 0\\\\therefore\\x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{256}=16\\\\x_1=\dfrac{-12-16}{2\cdot4}=\dfrac{-28}{8}=\boxed{-\dfrac{7}{2}}\\\\x_2=\dfrac{-12+16}{2\cdot4}=\dfrac{4}{8}=\boxed{\dfrac{1}{2}}$

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3 years ago

How do you show your work for this problem?

laiz [17]

Answer:

i cant see it

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers