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3 years ago

Evaluate the expression for x = - 5 and y = 7 2x+3y-11

Mathematics

1 answer:

jolli1 [7]3 years ago

4 0

Answer:2(-5)+3(7)-11=-10+21=11-11=0

Step-by-step explanation:

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A store charges 32% extra for credit items. if the cash price is $1100, what is the credit price?

Savatey [412]

Answer:

$1452

Step-by-step explanation:

$CP=1100*1.32=$1452$

6 0

3 years ago

Evaluate -4|-4|. A) 8 B) -8 C) 16 D) -16

Papessa [141]

The answer

The answer is -16

8 0

3 years ago

Read 2 more answers

Can someone help me with this math hw

AveGali [126]

Answer:

Step-by-step explanation:

F(x) = x² - 2x + 1

= (x - 1)²

By comparing this equation with the vertex form of the quadratic equation,

y = (x - h)² + k

Here, (h, k) is the vertex

Vertex of the parabola → (1, 0)

x-intercepts → (x - 1)² = 0

x = 1

y-intercepts → y = (0 - 1)²

y = 1

Now we can draw the graph of the given function,

From this graph,

As x → 0,

$\lim_{x \to 0^{-}} (x-1)^2=1$

$\lim_{x \to 0^{+}} (x-1)^2=1$

f(0) = (0 - 1)²

= 1

Since, $\lim_{x \to 0^{-}} (x-1)^2=\lim_{x \to 0^{+}} (x-1)^2=1$

Therefore, given function is continuous at x = 0.

8 0

3 years ago

How would you solve this by elimination?

jekas [21]

To solve this equation by elimination, what you would do is multiply one of the equations by -1, or distribute -1 to each term in the equation, any of the 2 equations. Then align the equations and add them together.

-(X + 3y = 3)
-X - 3y = -3

-X - 3y = -3
X + 6y = 3
__________
3y = 0
y = 0/3 = 0.

Now we can solve for x, by simply plugging the value of y into any of the 2 equations.

X + 6y = 3
X + 6(0) = 3
X + 0 = 3
X = 3.

The solution to your system of equations would be (3,0).

Check this by plugging in the point to the other equation and see if it is true.

X + 3y = 3
(3) + 3(0) = 3
3 + 0 = 3
3 = 3.

Thus it is the solution.

5 0

3 years ago

One angle within a triangle is 76 degrees. What is the value of the exterior angle?

mrs_skeptik [129]

Answer:

The value of the exterior angle is $104\°$