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My name is Ann [436]
3 years ago
14

Please answer !!! To solve the system of equations below, Luanne isolated the variable y in the first equation and then substitu

ted it into the second equation what was the resulting equation ?
{2y=6x
{x²+y²=49
A. x²+9x²=49
B. x²+9x=49
C. x²+3x=49
D. x²+3x²=49
Mathematics
2 answers:
gladu [14]3 years ago
8 0

The answer is A apex

Law Incorporation [45]3 years ago
5 0

Answer:

Option A. x² + 9x² = 49

Step-by-step explanation:

Luanne used two equations given as 2y = 6x ------(1)

and x² + y² = 49 -----(2)

Luanne isolated the value of y from the equation 1 and then substituted in equation 2.

We will do the same.

from equation 1

2y = 6x

⇒ y = 3x

Now we plug in the value of y in equation 2.

x² + (3x)² = 49

x² + 9x² = 49

which matches the option A.

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In a number with at least two digits, the last number was removed. The resulting number was n smaller than ghe previous one.
BartSMP [9]

Answer:

The largest possible value of n is 11.

(A) is correct option.

Step-by-step explanation:

Given that,

The number with at least two digits,the last number was removed. The resulting number was n smaller than the previous one.

We need to find the largest possible value of n

Using given data,

The smallest number of two digit is 10.

Now, we removed last digit then we get 1 which is equal to 10 divided 10.

So, n = 10

But the largest number of two digit is 99.

We removed last digit then we get 9 which is equal to 99 divided 11.

So, n = 11

Hence, The largest possible value of n is 11.

(A) is correct option.

5 0
3 years ago
Which of the following values are solutions to the inequality x-7< 5?x−7<5?
Lunna [17]

Answer:

x>12

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
a hat contains 3 blue and 5 black tickets. if one ticket is chosen at random from the hat what is the probability that it is blu
Nikitich [7]

Answer:

3/8

Step-by-step explanation:

3/(3 + 5) = 3/8

3 0
3 years ago
There are 1295 students attending a small university there are 714 woman in rolled what percentage of students are woman
MatroZZZ [7]

Answer:

Approximately 55% of enrolled students are women.

Step-by-step explanation:

To find the percentage of a given set of data, you need to divide the number of actual students by the total number of students.  In this case, they are wanting the percentage of just women students at the university:

\frac{women students}{total students} =\frac{714}{1295} x 100 = 55%


4 0
3 years ago
The length of a rectangle is 4 more than 3 times the width if the perimeter of the rectangle is 18.4 cm what is the area of the
garik1379 [7]
Let's call the width: w

the lenght is then 3w+4 ("4 more than 3 times the width")

and the parameter would be 2(w+3w+4), that is 2*(4w+4), that is 8w+8.

this is also equal to 18.4:

8w+8=18.4
8w=10.4
w=1.3

this is the width, and the lenght is:
4+3*1,3=4+3.9=7.9

and the area is their product:
1.3*7.9=10.27
6 0
3 years ago
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