3 years ago

Examine the balanced equation for the reaction between lead(I) nitrate and sodium chloride.

Mathematics

1 answer:

Montano1993 [528]3 years ago

3 0

I think the answer is B

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madreJ [45]

Answer: 18.84cm

Step-by-step explanation: 3 x 2 x 3.14 = 18.84cm

4 0

3 years ago

HELP ASAP!! What is the average rate of change between x = -3 and x = 4 for the equation y = 8x2?

Llana [10]

Answer:

$x=-3\\y=8(-3)^2\\y=8(9)\\y=72$

$x=4\\y=8(4)^2\\y=8(16)\\y=128$

128-72=56

average rate of change is 56

Step-by-step explanation:

Plz let me know if im right

3 0

3 years ago

Identify the value of x and the length of each secant segment.

uranmaximum [27]

Answer:

x=7; NL=12; NP+20

Step-by-step explanation:

8 0

3 years ago

Solve x 2 + 9x + 8 = 0 by completing the square. What are the solutions?

Sindrei [870]

So firstly, what two terms have a product of 8x^2 and a sum of 9x? That would be x and 8x. Replace 9x with x + 8x: $x^2+x+8x+8=0$

Next, factor x^2 + x and 8x + 8 separately. Make sure that they have the same quantity on the inside: $x(x+1)+8(x+1)=0$

Now you can rewrite the equation as $(x+8)(x+1)=0$

Now using zero product property, solve for x:

$x+8=0\\ x=-8\\ \\ x+1=0\\ x=-1$

<u>In short, the solutions are {-1,-8}, or C.</u>

4 0

4 years ago

2x-y=7<br> 3x+y=8 what is the answer to this problem

kakasveta [241]

Answer:

x is equal to 3 and y is equal to mines1

Step-by-step explanation:

add both together and you will get

$5x = 15$

and then it is easy to solve

3 0

4 years ago