All categories

3 years ago

A=4, b=2,c=-1 find value of a-b+c

Mathematics

2 answers:

777dan777 [17]3 years ago

7 0

Answer:

Step-by-step explanation:

Substitute the value of the variable into the expression and simplify.

4-2-1=1

Elodia [21]3 years ago

3 0

Answer:

Step-by-step explanation:

a-b+c

=4-2+(-1)

=2-1

You might be interested in

if I have a 71 percent in a class and I take a final worth 10 percent of my grade and fail. what would my grade be? thanks in ad

maria [59]

I think you're asking for a numerical answer, but you didn't mention
your score on the final.

Since the final is worth 10% (one tenth) of the grade, that 71 that you
have going into the final is worth 9/10 of the grade. So the way you
calculate your overall average is

 Overall score = 1/10 of [ (71 x 9) + score on the final ] .

If you scored absolute zero on the final, your overall average would be

Overall score = (1/10) x [ (71 x 9) + 0 ] = (1/10) (639) = 63.9% .

That's the lowest overall score for the class that you can have.

The highest overall score you could have would be if you got 100% on the final.
Then
 Overall = (1/10) x (639 + 100) = (1/10) x (739) = 73.9% .

If you got a 50% on the final, your overall would be

 (1/10) x (639 + 50) = (1/10) x (689) = 68.9% .

In general, your overall score for the class, after the final, is going to be

 63.9% plus (1 tenth) of your score on the final.

Good luck !

7 0

4 years ago

Read 2 more answers

Please help with this 15w=4.5

Lerok [7]

Answer:

0.3

Step-by-step explanation:

15w=4.5

÷15 ÷15

w = 0.3

Sorry if I'm wrong

4 0

3 years ago

The coordinates of three of the vertices of parallelogram ABCD are A(1, 0), B(2, 3), C(3, 2). What are coordinates of the fourth

nalin [4]

Answer:

A) The coordinates of the fourth vertex are:

1) x-coordinate:

$x=2$

2) y-coordinate:

$y=-1$

B) The point of intersection of the diagonals is: $(2,1)$

Step-by-step explanation:

We need to remember that the diagonals of a parallelogram intersect each other at a half-way point and the midpoint of each diagonal is the same.

The midpoint formula is:

$M=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

Since:

$M_{AC}=M_{BD}$

We can find the coordinates of the fourth vertex $D(x,y)$ through these procedure:

1) x-coordinate:

$\frac{1+3}{2}=\frac{2+x}{2}\\\\2(2)=x\\\\4-2=x\\\\x=2$

2) y-coordinate:

$\frac{0+2}{2}=\frac{3+y}{2}\\\\1(2)-3=y\\\\y=-1$

Therefore, fourth vertex is $D(2,-1)$

Since the point of intersection of the diagonals is the midpoint of a diagonal (Remember that $M_{AC}=M_{BD}$ ), this is:

$M_{AC}=M_{BD}=(\frac{1+3}{2},\frac{0+2}{2})\\\\M_{AC}=M_{BD}=(2,1)$

Therefore, the point of intersection of the diagonals is $(2,1)$

7 0

3 years ago

What is the solution 5y + 1 =31

chubhunter [2.5K]

I’m pretty sure it’s 7, do you want an explanation?

7 0

3 years ago

Given the figure below, find the values of x and z.

aleksandrvk [35]

Answer: x = 2 and z=78

Step-by-step explanation:

Opposite angles are non-adjacent angles formed by two intersecting lines. Opposite angles are congruent (equal in measure). Z is Opposite to 78 angle, so z=78.

Adjacent angles add up to 180 degrees, and 78 and (5x + 92) are adyacents so:

5x + 92 + 78 = 180

5x + 170 = 180

5x = 180 - 170

5x = 10

x = 10/5

x = 2

7 0

4 years ago