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2 years ago

Use the quadratic formula to find the exact solutions of x2 − 9x + 5 = 0.

Mathematics

2 answers:

Diano4ka-milaya [45]2 years ago

7 0

Answer:

Step-by-step explanation:

All those words, when the math is so much clearer!

x = (9±√(9^2-4*1*5))/2 = (9±√101)/2

spin [16.1K]2 years ago

7 0

Answer:

x equals 9 plus or minus the square root of 61, all over 2

Step-by-step explanation:

Solve the equation for x by finding a, b, and c of the quadratic then applying the quadratic formula.

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Is bac=lmn a valid congruence statement

stich3 [128]

Answer:

Yes, ΔBAC ≅ ΔLMN

Step-by-step explanation:

BA = LM

AC = MN

BC = LN

ΔBAC ≅ ΔLMN {Side Side Side congruence}

4 0

2 years ago

Find QR. A).12 B).-8 C).9 D).6

mihalych1998 [28]

Answer:

D. 6

Step-by-step explanation:

Let's first find x :-

$\sf 3 + 2x + 22 = x + 17$

$\sf 2x + 25 = x + 17$
$\sf 2x - x = 17 - 25$
$\sf x = - 8$

Now that we found x, let's find QR :-

QR = 2x + 22

$\sf QR = 2( - 8) + 22$
$\sf - 16 + 22$
$\sf 6$

Therefore, QR = 6 !!!

4 0

1 year ago

Matt pours 3 2/3 cups of orange juice into a measuring cup from a large container.Then he pours 1 1/4 cups back into the contain

dexar [7]

3/2/3 - 1/1/4
= 3/8/12 - 1/3/12
= 2/5/12

i am a mathematics teacher. if anything to ask please pm me

7 0

2 years ago

NEED HELP ASAP WILL MARK BRAINLIEST AND WILL PUT LOTS OF POINTS

Stella [2.4K]

Answer:

9 cups

Step-by-step explanation:

We can use ratios to solve

1/3 cup red 4 cups red

----------------- = -------------------

3/4 cup yellow x cups yellow

Using cross products

1/3 *x = 3/4 *4

1/3x = 3

Multiply each side by 3

1/3 x * 3 = 3 * 3

x = 9

6 0

2 years ago

18 = 3 + 5x for x. A. 1 B. 2 C. 3 D. 4

Ket [755]

Answer:

C. 3

Step-by-step explanation:

subtract 3 from both sides

15 = 5x

Divide by 5 on both sides

3 = x

7 0

2 years ago

Read 2 more answers