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Olegator [25]
3 years ago
6

8x + 3y = 10 -2x - 10y =16

Mathematics
2 answers:
Len [333]3 years ago
7 0

Answer:

(2,-2)

x=2

y=-2

devlian [24]3 years ago
4 0

Answer:

1.  x = \frac{-3}{5}y + \frac{5}{4}

2. x = -5y - 6

Step-by-step explanation:

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7 divided into $50.40
PolarNik [594]

Answer:

0.138repeating

Step-by-step explanation:

5 0
3 years ago
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If a and b are real numbers and if y = ax + b is a direct variation equation, what do you know about a and b?
Alenkasestr [34]
y = ax + b
 We observe that the given equation is the generic equation of a line.
 Where,
 a = represents the slope of the line. That is, the rate of change of the given function. (in this case it is constant).
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8 0
3 years ago
Lena is 10 years old. She asks her dad how old he is. He tells her that the lowest common multiple of their ages is 14 times the
Ksju [112]

Answer:

  35

Step-by-step explanation:

We know the factors of Lena's age are 2 and 5. The least common multiple must have these factors and the factors of 14, so will at least have factors of 2, 5, and 7.

Apparently, the dad's age is 5·7 = 35.

___

The GCF is 5; the LCM is 70 = 5×14.

_____

Sometimes, I use a little 3-part diagram to think about LCM and GCF. Here, it would look like ...

  (2 [5) 7]

where the numbers in curved brackets (2·5) and the numbers in square brackets [5·7] are factors of the two numbers of concern (Lena's age, her dad's age). The middle number in both brackets [5) is the greatest common factor, and the product of all three numbers is their least common multiple.

Here, the product of outside numbers, 2·7 = 14, represents the ratio of the LCM to the GCF. We know that Lena's age has factors of only 2 and 5, so the numbers in the diagram have to be (2[5)7], where 2 and 7 are on the ends and 5 is in the middle.

7 0
3 years ago
What is the slope of 2x+3y=15
Fynjy0 [20]

Note that the slope-intercept form is: y = mx + b

First, set the equation as such

2x (-2x) + 3y = (- 2x) + 15

3y = -2x + 15

Isolate the y. Divide 3 from both sides

(3y)/3 = (-2x + 15)/3

y = (-2/3)x + 5

-2/3 is your slope

hope this helps

5 0
2 years ago
What is the range of the given function?
Fed [463]

9514 1404 393

Answer:

  (b)  {yly = -9, -3, 0, 5, 7}

Step-by-step explanation:

The range is the set of y-values in the ordered pairs. It is usually convenient to list a set in alphanumeric order.

The second values of the ordered pairs are 0, -3, -9, 5, 7. So, the range is ...

  y ∈ {-9, -3, 0, 5, 7} . . . . . matches the second choice

6 0
2 years ago
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