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Rina8888 [55]
3 years ago
14

Algebra 2, I need help!!! Solve x^2 + 6x + 7 = 0. If you are going to comment in here please know the answer, this is so serious

for me. Thank you.

Mathematics
1 answer:
docker41 [41]3 years ago
6 0

Answer:

Third option

Step-by-step explanation:

We can't factor this so we need to use the quadratic formula which states that when ax² + bx + c = 0, x = (-b ± √(b² - 4ac)) / 2a. However, we notice that b (which is 6) is even, so we can use the special quadratic formula which states that when ax² + bx + c = 0 and b is even, x = (-b' ± √(b'² - ac)) / a where b' = b / 2. In this case, a = 1, b' = 3 and c = 7 so:

x = (-3 ± √(3² - 1 * 7)) / 1 = -3 ± √2

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Answer correct and fast
inna [77]

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1) 32780ml = 32.78

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2 years ago
Hey!!! PLS Help <br> If ∠6 = 68°, find the measures of angles 4, 5, 7.
irina [24]

Answer:

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Step-by-step explanation:

If angle 1 is 135 degrees, how many degrees is angle 3? Q. What angle pair is pictured? Q. Find the measure of the indicated angle. (remember that the sum of interior angles is equal to 180 degrees) Q. Find the measure of each angle indicated. Q. If all three angles are exactly the same measure, how big is each angle? Q. Find the missing angle.

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2 years ago
The cost of pumpkin seeds is proportional to
zheka24 [161]

Answer:

Part 1) The unit rate is  \$0.25\ per\ ounce

Part 2) A 56 ounce bag of pumpkin  Seeds cost $14.00

Step-by-step explanation:

Part 1) What is the unit rate  for the pumpkin seeds?

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form k=\frac{y}{x} or y=kx

Let

y ----> the cost of pumpkin seeds in dollars

x ---> the weight in ounces

we have

For x=24 ounces, y=$6

Find the value of the constant of proportionality k

k=\frac{y}{x}

substitute the values

k=\frac{6}{24}=\$0.25\ per\ ounce

The unit rate is the same that the constant of proportionality k

therefore

The unit rate is

\$0.25\ per\ ounce

Part 2) How much would 56. ounce bag of pumpkin seeds cost?

we know that

The linear equation is equal to

y=0.25x

For x=56 ounces

substitute in the linear equation and solve for y

y=0.25(56)=\$14.00

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yKpoI14uk [10]

Answer:

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4.75h + 11

Step-by-step explanation:

3.50 per hour times the hours, h, plus the fee, 17

4.75 per hour times the hours, h, plus the fee, 11

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