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Art [367]
3 years ago
14

Please help!!!!!!!!!!!!

Mathematics
1 answer:
Virty [35]3 years ago
4 0
What do you need help with bud?


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HELP ASAP
kari74 [83]

Answer:

2. 4a+2c = 5000

4. a + c = 1600

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Please help &amp; show me how you got it! <br>6-7
Nadya [2.5K]
Number 6 the y intercept is 50 because that’s the point where it crosses the y axis and 7 I believe it would be D= 200
4 0
3 years ago
Solve x2 – 8x = 3 by completing the square. Which is the solution set of the equation?
vazorg [7]

Answer:

x = 4 ± \sqrt{19}

Step-by-step explanation:

Given

x² - 8x = 3

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 4)x + 16 = 3 + 16

(x - 4)² = 19 ( take the square root of both sides )

x - 4 = ± \sqrt{19} ( add 4 to both sides )

x = 4 ± \sqrt{19}

8 0
2 years ago
Read 2 more answers
Indicate whether the following variables are qualitative (QL) or quantitative (QU): a. Favorite color ____ b. Current Occupation
Whitepunk [10]

Answer:

a. Qualitative.

b. Qualitative.

c. Quantitative.

d. Quantitative.

e. Qualitative.

Step-by-step explanation:

a.

Favorite color can be classified into different categories such as blue,orange, white etc, so, favorite color is a qualitative variable.

b.

Current Occupation can be classified into different categories such as teacher, lawyer and doctor etc, so, current occupation is a qualitative variable.

c.

Number of extra credit problems solved can be meaningfully presented as numerical figures so, number of extra credit problems solved  is a quantitative variable.

d.

Number of students in class can be meaningfully presented as numerical figures so, number of of students in our class is a quantitative variable.

e.

Exam Grades can be classified into different categories such as A, B and C etc, so, exam grades is a qualitative variable.

4 0
3 years ago
Show the processes for solving 2x+3y=5 and 4x - y=17 using elimination and substitution
r-ruslan [8.4K]

<u>ANSWER:  </u>

The solution of the two equations 2x+3y=5 and 4x - y=17 is (4, -1).

<u>SOLUTION: </u>

Given, two linear equations are 2x + 3y = 5 → (1) and 4x – y = 17 → (2).

Let us first solve the above equations using <em>elimination process. </em>

For elimination, one of the coefficients of variables has to be same in order to cancel them.

Now solve (1) and (2)

eqn (1) \times 2 → 4x + 6y = 10

eqn (2) → 4x – y = 17

(-) ----------------------------

     0x + 7y = -7

y = -1

Substitute y value in (2)

4 x-(-1)=17 \rightarrow 4 x+1=17 \rightarrow 4 x=17-1 \rightarrow 4 x=16 \rightarrow x=4

So, solution of two equations is (4, -1).

<u><em>Now let us solve using substitution process.</em></u>

Then, (2) → 4x – y = 17 → 4x = 17 + y → y = 4x – 17

Now substitute y value in (1) → 2x + 3(4x – 17) = 5 → 2x + 12x – 51 = 5 → 14x = 5 + 51 → 14x = 56  

x = 4

Substitute x value in (2) → y = 4(4) – 17 → y = 16 – 17 → y = -1

Hence, the solution of the two equations is (4, -1).

7 0
3 years ago
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