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andre [41]
3 years ago
8

Use elimination to solve the system of equations. Enter your answers in the boxes.

Mathematics
1 answer:
otez555 [7]3 years ago
8 0

Answer:

The answer is (18,15)

Step-by-step explanation:

Sorry if you get this wrong tho :/

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tomas wrote an equation 4/5x-8=. Finish the equation so that the equation will have no solution. Explain how you know.
Pepsi [2]

Answer:

Right part: \dfrac{4}{5}x+a, where a\neq -8.

Step-by-step explanation:

Linear equation have no solution if it is impossible for the equation to be true no matter what value we assign to the variable x.

The left part of the equation Tomas wrote is

\dfrac{4}{5}x-8.

The right part of the equation should be of the form

\dfrac{4}{5}x+a,

where a\neq -8.

In this case, the equation will take look

\dfrac{4}{5}x-8=\dfrac{4}{5}x+a,\\ \\-8=a.

Since a\neq -8, this equality is always false.

Remark: 1) If a=8, the equation \dfrac{4}{5}x-8=\dfrac{4}{5}x+a is equivalent to the equation

\dfrac{4}{5}x-8=\dfrac{4}{5}x-8,\\ \\0=0

and the lest equation has infinitely many solutions.

2) When coefficient at x differs from \dfrac{4}{5}, the equation has unique solution.

6 0
3 years ago
Janelle and Lisbeth are picking berries. Janelle picks of a quart more than Lisbeth picks every hour. The equation representing
Llana [10]

Answer:b c d

Step-by-step explanation:

5 0
3 years ago
- You lose three points each time you answer
Ket [755]

Answer: The answer is -24 if you start at 0 points

Step-by-step explanation:

3 x 8 = 24 if it starts at zero put a negative symbol (-) to 24.

7 0
4 years ago
in the figure p is the incenter of isosceles rst what type of triangle is rpt? Thank you in advance .
snow_lady [41]

Answer:

\Delta \text{RPT is an isosceles triangle}

Step-by-step explanation:

As in the triangle RST,

RS=ST\ \ \ \Rightarrow m\angle SRT=m\angle STR

Because if in a triangle two angles equal one another, then the sides opposite the equal angles also equal one another.

Incenter is obtained by the Intersection of a triangle's three angle bisectors and it is equidistant from the three sides of the triangle.

So, RP and TP are the angle bisectors of ∠R and ∠T respectively.

\Rightarrow \dfrac{m\angle SRT}{2}=\dfrac{m\angle STR}{2}

\Rightarrow m\angle PRT=m\angle PTR

\Rightarrow PR=PT

\Rightarrow \Delta \text{RPT is an isosceles triangle}

7 0
3 years ago
Read 2 more answers
In some country the budget for defense exceeded the budget for education by ​$622.7 billion. If x represents the budget for​ edu
inysia [295]

Answer:

y = x + \$622.7\ billion

Step-by-step explanation:

To start with;

Represent the budget of education by x

Represent the budget of defense by y

From the question, we understand that:

y exceeds x by $622.7 billion

Mathematically. this can be represented as:

y = x + \$622.7\ billion

<em>Hence, the defense budget is x + $622.7 billion</em>

8 0
3 years ago
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