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3 years ago

Does (-1, 2), (1, 1),( 1 -1), (2,1), (4,2) represent y as a function

1 answer:

8 0

No. A function maps one input to exactly one output. The given relation maps 1 to both 1 and -1, as indicated by the pairs (1, 1) and (1, -1).

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Isoke is solving the quadratic equation by completing the square.10x2 + 40x – 13 = 0 10x2 + 40x = 13 A(x2 + 4x) = 13What is the

Elina [12.6K]

we have

$10x^{2} + 40x - 13 = 0$

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$10x^{2} + 40x =13$

Factor the leading coefficient

$10(x^{2} + 4x) =13$ ----------> the value of A is $10$

Complete the square. Remember to balance the equation by adding the same constants to each side

$10(x^{2} + 4x+4) =13+40$

$10(x^{2} + 4x+4) =53$

Rewrite as perfect squares

$10(x+2)^{2} =53$

$10(x+2)^{2} =53 \\ (x+2)^{2} =\frac{53}{10} \\ \\ x+2=(+/-)\sqrt{\frac{53}{10}} \\ \\ x1=-2+\sqrt{\frac{53}{10}}\\ \\ x2=-2-\sqrt{\frac{53}{10}}$

therefore

the answer is

the value of A is $10$

3 0

3 years ago

Read 2 more answers

-9x+2>18 AND 13x+15≤-4

meriva

Answer:

for -9x+2>18 its x<-16/9 and for 13x+15≤-4 its x<-19/13

Step-by-step explanation:

4 0

3 years ago

Zelda completed the right column of the table to help her find the difference of the fractions. 5/6 - 1/9

ArbitrLikvidat [17]

Answer:

13/18

Step-by-step explanation:

1. $\frac{5}{6} -\frac{1}{9}$

2. $\frac{n}{54} - \frac{n}{54}$

3. $\frac{45}{54} - \frac{6}{54}$

4. $= \frac{39}{54}$

5. $Simplify: \frac{13}{18}$

4 0

3 years ago

I have no clue what I’m doing please help! I’m struggling in Graphing Radical Functions!

Dmitriy789 [7]

Answer:

I'm pretty sure you are correct, but it is reflected over the x-axis.

Step-by-step explanation:

3 0

3 years ago

Almanah is baking cookies. She has a bag that contains 300 cookies. If she wants to bake a batch of 40 cookies with 6 chocolate

Mademuasel [1]

Answer:

Did you mean she has a bag that contains 300 chips? if so yes.

Step-by-step explanation:

If each cookie gets 6 chips and she makes 40 cookies, you can use multiplication to see.

6*40=240

She has plenty, 60, of chocolate chips left over

6 0

3 years ago