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Georgia [21]
2 years ago
10

6x+5y=25 is equal to what?

Mathematics
1 answer:
spin [16.1K]2 years ago
4 0

Step-by-step explanation:

6x+5y=25 .......eq1

or, 6x+5y-25=0

or,6x-25= -5y

or, 6x-25/5=y

or, 6x-5=y ......eq2

putting value of y in,

6x+5y=25 eq1

or, 6x+5(6x-5)=25

or, 6x+30x-25=25

or, 36x = 50

or, x=50/36

and x = 25/18

putting x value in,

6x-5=y eq2

6×25/18 -5 = y

10/3 = y

please do check your answers..later!!

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In the ellipse, if c=6cm, and b=8cm, what is the length of the major axis?
kondor19780726 [428]

Answer:

Option B). 10 cm

Step-by-step explanation:

Distance between center and the focus of an ellipse is given by the formula,

c² = a² - b²

where, a = length of the major axis

b = length of the minor axis

and c = distance between focus and center

If c = 6 cm, b = 8 cm,

6² = a² - 8²

a² = 6² + 8²

a² = 36 + 64

a² = 100

a = 10 cm

Therefore, length of the major axis is 10 cm.

Option (B) is the answer.

4 0
2 years ago
Chapitre 6. Proportionnalité (12) Approfondissement
brilliants [131]
You have to do this because the answe is the 2nx
3 0
3 years ago
NEED HELP IMMEDIATELY. 50 POINTS TO THE BEST ANSWER.
Reil [10]

Answer:

See below

Step-by-step explanation:

r=0 means there is zero correlation between the independent and dependent variables. Most likely, some other regression model will help to bring the value of r closer to -1 or 1 to show a strong correlation.

8 0
2 years ago
Read 2 more answers
Meghan is attending a college where tuition is $6,600 per year. She received a $2,000 grant and her parents will give her anothe
n200080 [17]

ANSWER:

Total fee per year = $6,600.

In which she have,

  • $2,000 + $1,500
  • $3,500

Now, we need to subtract it from total fee to get the remaining demand.

So, $6,600 - $3,500

  • $3,100

Hence, Meghan will have to earn __$3,100__ to pay for the first year tuition.

4 0
2 years ago
Which equation is true when the value of x is -12
Sophie [7]

Answer:

Which equation is true when the value of x is -12    HERE YOU GO!!

Step-by-step explanation:

tricky ... let's see ...

I notice that if we subtract xy from both sides we get

7x + xy - xy = xy - xy + 21

then

7x = 21

and

x = 21/7 = 3

so there is only one value of x that satisfies the equation

x = 3

Going back to the original equation we see that any value of y will satisfy the original equation

we can see this by rearranging things:

7x + xy - xy = 21

here, I have performed the subtraction of xy on the right side as above, but have left the left side undone

(so we don't lose the presence of y)

Note that the above can also be written as

7x + (x - x)y = 21

or

7x + 0y =21

now, since anything times zero equals zero,

y may be any number.

Let's summarize:

1) x = 3

2) y = anything

looking back at the original question;

1) the equation is true for all ordered pairs

FALSE (only one x works, not all x)

2) there are no x and y pairs for which the equation is true.

FALSE (x=3, y=anything) makes it true, i.e. (3,1)  

3) For each value of x, there is one and only one value of y that makes the equation true,

FALSE for each value of x, for the one value of x, x=3, y can be any number, which is an infinite number, not one

4) for each value of y, there is one and only on value of x that makes the equation true.

TRUE!! for all the infinite values of y you may pick, there is one and only one x you may pick, x = 3

ANSWER: STATEMENT 4 is CORRECT (TRUE)

3 0
2 years ago
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