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4 years ago

8x + 6y = 10

2 answers:

6 0

It could be D or C
The system has two solutions
x = .8 y = .6

OR if you think about it , (x=.8 y=.6) could be considered THE solution.
I would go with choice C

Nitella [24]4 years ago

5 0

Here, Multiply second equation by 2,
10x - 6y = 4.4

Now, Add both the equations,
18x = 14.4
x = 14.4 / 18
x = 0.8

Substitute it in 2nd equation,
5(0.8) - 3y = 2.2
-3y =2.2 - 4
y = 1.8/3
y = 0.6

Solution of the system of Equation is: (0.8, 0.6)

In short, Your Answer would be Option C

Hope this helps!

You might be interested in

Determine and prove what shape is formed for the given coordinates for ABCD, and then find the

ella [17]

Answer:

Square

Step-by-step explanation:

Plot points A (10,-4), B (6,-7), C (3,-3), D (7,0) on the coordinate plane.

Find slopes of the sides:

$AB:\ \dfrac{-7-(-4)}{6-10}=\dfrac{3}{4}\\ \\BC:\ \dfrac{-3-(-7)}{3-6}=-\dfrac{4}{3}\\ \\CD:\ \dfrac{0-(-3)}{7-3}=\dfrac{3}{4}\\ \\DA:\ \dfrac{-4-0}{10-7}=-\dfrac{4}{3}$

The slopes of opposite sides are the same, so opposite sides are parallel. The slopes of adjacent sides have product of -1, then adjacent sides are perpendicular.

Find the lengths of all sides:

$AB=\sqrt{(10-6)^2+(-4-(-7))^2}=\sqrt{4^2+3^2}=\sqrt{16+9}=\sqrt{25}=5\ units\\ \\BC=\sqrt{(6-3)^2+(-7-(-3))^2}=\sqrt{3^2+4^2}=\sqrt{16+9}=\sqrt{25}=5\ units\\ \\CD=\sqrt{(3-7)^2+(-3-0)^2}=\sqrt{4^2+3^2}=\sqrt{16+9}=\sqrt{25}=5\ units\\ \\AD=\sqrt{(10-7)^2+(-4-0)^2}=\sqrt{3^2+4^2}=\sqrt{16+9}=\sqrt{25}=5\ units\\ \\$

All four sides are of the same length.

Quadrilateral ABCD is a square (all sides of equal length and perpendicular)

4 0

3 years ago

For what real values of $c$ is $x^2 - 8x + c$ the square of a binomial?

nikklg [1K]

Value of c is 16 for which equation $f(x) = x^2-8x+c$ is a square of binomial !

Step-by-step explanation:

Here we meed to find the value of c for which equation f(x) = x^2-8x+c or , $f(x) = x^2-8x+c$ is a square of a binomial . Let's find out:

We know that

⇒ $(x-a)^2 = x^2-2(a)(x)+a^2$ ..........(1)

Let's simplify given equation in question

⇒ $f(x) = x^2-8x+c$

⇒ $f(x) = x^2-2(4)x+c$

Comparing this equation with (1) we get :

$a=4 , c=a^2$

⇒ $c=a^2$

⇒ $c=4^2$

⇒ $c=16$

Therefore , Value of c is 16 for which equation $f(x) = x^2-8x+c$ is a square of binomial !

5 0

3 years ago

If the product of a number and negative 5−5 is subtracted from the number, the result is 44 more than the number. Find the numb

fomenos

Answer:

8.8 or 8(4/5) or 44/5

Step-by-step explanation:

x-(-5x) = x+44

6x= x+44

5x=44

x=44/5 = 8.8

8.8-(-5*8.8) =8.8+44

8.8+44 = 8.8+44

8 0

3 years ago

Find the length of x.

jenyasd209 [6]

This is one of the photos I used to answer, I’m going to send the second one

6 0

3 years ago

Please help me with this thank you so much

Tasya [4]

Answers:

5) A.) 26 and 6) D.) 30

Step-by-step explanations:

Question 5)

For this question, we need to analyze the graph given and look at how many people scored 601 or above on the math portion. So, looking at the answers given we aren't going to have a smaller number of only 16 or 10, since they are both equal to or higher than 601. So, we need to add the amount of students that scored the 601 or higher amount.

16 + 10 = 26.

This answer matches up with the answer given of A).

Question 6)

For this question, it is similar except you don't add the numbers given. Instead, the question is asking for a specific amount given. So, looking at the answers given, yes 18 and 6 did score below 500, but the question asked "...scored 500 or below?" This is a specific question telling us about the 500 or below, which is in one column. As shown in the graph, 30 students scored this specific amount, which gives us our answer of D).

I hope that this helps.

7 0

2 years ago