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Gnom [1K]
3 years ago
7

Which of the following is a correct interpretation of the expression -7 - (-11)

Mathematics
1 answer:
shepuryov [24]3 years ago
7 0

Answer:a

Step-by-step explanation:

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1) y=-3x + 4 y = 3x - 2 (1,1)​
puteri [66]

Answer:

y=3x-2

Step-by-step explanation:

your question didn't have any instructions so this might not be what you're looking for

set them equal to each other

-3x+4=3x-2

-3x-3x=-2-4

-6x=-6

x=1

plug in x=1

y=3(1)+4   =7

y=3(1)-2   =1

so, when x=1, y=1 in the expression y=3x-2

7 0
3 years ago
Which is a point on the circle whose center is (0, 0) and whose radius is 5?
AleksAgata [21]
Circle equation is given in the form of (x-a)²+(y-b)² = r²

Where (a, b) is the centre and 'r' is the radius

We have a circle with centre (0, 0) and radius of 5.

Substituting these value into the equation form, we have

(x-0)²+(y-0)² = 5²
x² + y² = 25

Hence, the equation of the circle is x² + y² = 25
5 0
3 years ago
Part A Prove that when x > 1, a triangle with side lengths a = x2 − 1, b = 2x, and c = x2 + 1 is a right triangle. Use the Py
Nataly [62]

Step-by-step explanation:

Given : A triangle with side lengths a = x^2-1, b = 2x, \text{ and } c = x^2 + 1

To find : Prove that when x > 1, it is a right triangle. Use the Pythagorean theorem and the given side lengths to create an equation. Use the equation to show that this triangle follows the rule describing right triangles. Explain your steps ?

Solution :

For right triangle the Pythagorean theorem is to be satisfied.

i.e. c^2=a^2+b^2

Here, a = x^2-1, b = 2x, \text{ and } c = x^2 + 1

Substitute the values,

(x^2+1)^2=(x^2-1)^2+(2x)^2

x^4+1+2x^2=x^4+1-2x^2+4x^2

x^4+1+2x^2=x^4+1+2x^2

LHS=RHS

It is a right triangle.

7 0
3 years ago
glen rolls a 6 sided die what is the probability that he gets a number greater then 2 or an odd number​
Firdavs [7]

Answer:

5/6.

Step-by-step explanation:

Let's list the numbers which fit the condition ' greater than 2 or an odd number':

They are 1, 3, 4, 5, 6. Five numbers, so the required probability is:

5/6.

6 0
3 years ago
Find the sum of the first 25 multiples of 10.<br>​
poizon [28]

Answer:

Step-by-step explanation: So the first 25 multiples of 10 are ,

10,10,10,10 ect, to 25 the sum of all of the numbers is 250 i hope this helped!!!

3 0
3 years ago
Read 2 more answers
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