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Maru [420]
3 years ago
13

If someone weighed 6 pounds 3 ounces and they gained 128 ounces how much did they gain

Mathematics
1 answer:
Taya2010 [7]3 years ago
4 0
They gained 8 pounds ...
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Consider the function f(x)=-3x^2 +7x -k. [3 Marks] a) For what values of k will the function have no zeros? b) For what values o
Anna35 [415]

Answer: a) k >4.08

b) k = 4.08

c) k<4.08

Step-by-step explanation:

Since we have given that

f(x)=-3x^2+7x-k

a) For what values of k will the function have no zeros?

It mean it has no real zeroes i.e. Discriminant < 0

As we know that

D=b^2-4ac

Here, a =-3

b = 7

c = -k

So, it becomes,

D

b) For what values of k will the function have one zero?

It means it has one real root i.e equal roots.

So, in this case, D = 0

So, it becomes,

D=b^2-4ac=0\\\\D=7^2-4\times -3\times -k=0\\\\49-12k=0\\\\49=12k\\\\k=\dfrac{49}{12}\\\\k=4.08

c) For what values of k will the function have two zeros?

It means it has two real roots.

In this case, D>0

So, it becomes,

D=7^2-4\times -3\times -k>0\\\\49-12k>0\\\\-12k>-49\\\\12k

Hence, a) k >4.08

b) k = 4.08

c) k<4.08

3 0
3 years ago
How many ways can a president, vice president, and secretary be selected from a class of 30 students? a. 90 b. 2,068 c. 4,060 d.
Ad libitum [116K]

Answer:

the answer to your question should be 2,068

Step-by-step explanation:

i hope i am right but i think so

7 0
2 years ago
What is the midpoint of (-7,-9) (6,3)
Advocard [28]

Answer :

Let the first term of both the terms be \:  \sf \: x _1 \:  \: \& \:  \: x _2 and last term be \:  \sf \: y _1 \:  \: \& \:  \: y_2\\

Now, by using the mid point formula to find the mid point of the segment -

\\   \sf \bigg( \frac{x_1 + x_2}{2} , \:  \frac{y_1 + y_2}{2}  \bigg) \\

Now, by substituting the values of both x and y -

\\  \sf \bigg( \frac{ - 7 + 6}{2} , \:   \frac{ - 9 + 3}{2}  \bigg) \\

Adding -7 and 6 -

\\  \sf \bigg( \frac{ - 1}{2} , \frac{ - 9 + 3}{2}  \bigg) \\

Now, move the negative in front of the fraction -

\\  \sf \bigg( \frac{ - 1}{2} , \frac{ - 6}{2}  \bigg) \\  \\  \\  \sf \bigg( \frac{ - 1}{2} , - 3\bigg) \\

6 0
3 years ago
What is a name for a marked angle ? Answers to choose from :
katen-ka-za [31]

Answer:

Angles are named in two ways. You can name a specific angle by using the vertex point, and a point on each of the angle's rays. The name of the angle is simply the three letters representing those points, with the vertex point listed in the middle. You can also name angles by looking at their size.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
using the distributive property to find the product (y-4)(y^2+4y+16) results in a polynomial of the form y^3 + 4y^2 + ay - 4y^2
Anni [7]
(y-4)(y^2+4y+16)
y^3+4y^2+16y-4y^2-16y-64=y^3+4y^2+ay-4y^2-ay-64
Comparing the coefficients: a=16
Answer: The value of a in the polynomial is 16
7 0
3 years ago
Read 2 more answers
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