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4 years ago

Sienna is solving the quadratic equation by completing the square.

2 answers:

7 0

If you would like to know the value of A, you can do this using the following steps:

3x^2 + 9x - 4 = 0
3x^2 + 9x = 4
A(x^2 + 3x) = 4

A = 3:
3 * (x^2 + 3x) = 4
3x^2 + 9x = 4

The correct result would be C: 3.

Ainat [17]4 years ago

3 0

Answer:

the answer is C.) 3

Step-by-step explanation:

i took the test : )

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The Lewis family and the Perry family each used their sprinklers last summer. The water output rate for the Lewis family's sprin

Rashid [163]

The Lewis family and the Perry family each used their sprinklers last summer. The water output rate for the Lewis family's sprinkler was 15 L per hour. The water output rate for the Perry family's sprinkler was 40 L per hour. The families used their sprinklers for a combined total of 65 hours, resulting in a total water output of 1850 L . How long was each sprinkler used

Answer:

Hours of use of sprinkler by Lewis family is 30 hours.

Hours of use of sprinkler by Perry family is 35 hours.

Step-by-step explanation:

Let W = hours of use by Lewis family

65 - W = hours of use by Perry family

Then;

15W + 40*(65 - W) = 1850

15W + 2600 - 40W = 1850

(15 - 40)W = 1850 - 2600

-25W = −750

W = 750/25 = 30

Therefore;

W = 30

65 - W = 65 - 30 = 35

Hence,

Hours of use by Lewis family is 30 hours.

Hours of use by Perry family is 35 hours.

3 0

4 years ago

A recipe calls for the following spices: 18 teaspoon of turmeric, 18 teaspoon of ginger, and 14 teaspoon of cumin. What is the t

Sphinxa [80]

Answer:

50 total

Step-by-step explanation:

when it's asking for a total you add the numbers together, and whatever number you get is your answer :)

sorry if it's wronggg :( !!

7 0

3 years ago

Gabe rolled 14 strikes out of 70 attempts. What percent of Gabe's attempts were strikes?

Airida [17]

Answer:

20%

Step-by-step explanation:

14/70x100=20%

5 0

3 years ago

The graph of the w=equation x+3y=6 intersects the y axis at the point whose coordinate are

nevsk [136]

Y intercept = when x = 0
Plug in x = 0
0 + 3y = 6
3y = 6, y = 2

Solution: a, (0,2)

8 0

3 years ago

Math riddle! Correct answer gets brainliest! Answer with what x and y are equal to.

RSB [31]

Answer:

$\displaystyle [9, 4\frac{1}{2}]$

Step-by-step explanation:

I figure these exercises out by numeric association. I see a 3, so I know right away that there might be a 9 somewhere. So, you start by plugging 3 in for $\displaystyle x,$ THEN plug $\displaystyle 1\frac{1}{2}$ in for $\displaystyle y$ sinse there are twise the quantity of $\displaystyle y$ than there are of $\displaystyle x.$ Now, doing so will give you $\displaystyle 24 ≠ 18.$ This tells you to try another pattern, so go with plugging $\displaystyle 4\frac{1}{2}$ in for $\displaystyle y$ and $\displaystyle 9$ in for $\displaystyle x$ . Doing so gives you what you are looking -- $\displaystyle 36 = 36.$ Therefore, the association wourked perfectly. ☑

I am joyous to assist you at any time.

8 0

2 years ago