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3 years ago

Please help I’m confused!

Mathematics

2 answers:

mojhsa [17]3 years ago

8 0

Answer:

2nd option; $c=9-a+b$

Step-by-step explanation:

The first thing you need to do, is rewrite the equation without the square root.
So for instance $\sqrt{16}=4$ and $16=(4)^2$ therefore $a-b+c=(3)^2$
Then $a-b+c=9$
Now we take away ' $a$ ' on both sides and add ' $b$ ' on both sides
So $a-(a)-b+(b)+c=9-(a)+(b)$
Which gives us $0+0+c=9-a+b$ which is simply $c=9-a+b$

Hope this helps

Gnesinka [82]3 years ago

5 0

Number 2 is the answer););!;!:!;!;!;!;!;!;!;!;!;?;

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If you put that same $1000 with a different company that pays 5% and compounds every six months, how much money will you have on

valentinak56 [21]

5% of a thousand is 50 so, 50 x 18 = 900

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3 years ago

A friend has a 83% average before the final exam for a course. That score includes everything but the final, which counts for 25

Klio2033 [76]

Answer:

$\mathrm{Best\:course\:grade\:possible:\:}87.25\%,\\\mathrm{Minimum\:score\:on\:final\:to\:earn\:at\:least\:a\:75\%\:for\:the\:course:\:}51\%$

Step-by-step explanation:

Assuming the maximum score for the final is $100\%$ , we can multiply each score by its respective course weight and add them together to give a final score. If your friend did receive this maximum score of $100\%$ , their overall grade for the course would be:

$83(1-0.25)+100(0.25)=\fbox{$87.25\%$}$ .

To find the minimum score they need to earn a 75% for the course, we set up the following equation:

$83(1-0.25)+x(0.25)=75$ , where $x$ is the minimum score she needs.

Solving, we get:

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8 0

3 years ago

Given the point P(4, 2) and T(x,y)=(x+1, y+3), what are the coordinates of T(P)? *

Nimfa-mama [501]

Answer:

T (5, 5)

Step-by-step explanation:

T(P)= (x+1, y+3) = (4+1, 2+3)

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3 years ago

Read 2 more answers

A quadratic function is a function of the form y=ax^2+bx+c where a, b, and c are constants. Given any 3 points in the plane, the

pochemuha

Answer:

The quadratic function whose graph contains these points is $y=-x^{2}-2x-2$

Step-by-step explanation:

We know that a quadratic function is a function of the form $y=ax^{2}+bx+c$ . The first step is use the 3 points given to write 3 equations to find the values of the constants a,b, and c.

Substitute the points (0,-2), (-5,-17), and (3,-17) into the general form of a quadratic function.

$-2=a*0^{2}+b*0+c\\c=-2$

$-17=a*-5^{2}+b*-5+c\\c=-25a+5b-17$

$-17=a*3^{2}+b*3+c\\ c=-9a-3b-17$

We can solve these system of equations by substitution

Substitute $c=-9a-3b-17$

$-9a-3b-17=25a+5b-17\\-9a-3b-17=-2$

Isolate a for the first equation

$-9a-3b-17=-25a+5b-17\\a=\frac{b}{2}$

Substitute $a=\frac{b}{2}$ into the second equation

$-9\left(-\frac{b}{2}\right)-3b-17=-2$

Find the value of b

$-9\left(-\frac{4b}{17}\right)-3b-17=-2\\ b=-2$

Find the value of a

$a=\frac{b}{2}\\ a=-1$

The solutions to the system of equations are:

b=-2,a=-1,c=-2

So the quadratic function whose graph contains these points is

$y=-x^{2}-2x-2$

As you can corroborate with the graph of this function.

8 0

4 years ago

[11 +{-18 divided by 9}]x2 HELP! Please and thanks

USPshnik [31]

Answer:

7 is the answer.

Step-by-step explanation:

In equations like this, you would solve the numbers in the parenthesis first, and then gradually do: Multiplication -> Division -> addition -> subtraction.

Therefore, -18 / 9 is -2.

-2 * 2 would be -4,

11 + (-4) would be 7.

Answer : 7.

6 0

3 years ago