Which are the solutions of the quadratic equation?

Answer:

26.411

Step-by-step explanation:

In 3a+bc-c you have to substitute

a=8.6, b=2.3, c=0.47

3*8.6 + 2.3*0.47 - 0.47 first do the multiplication then addition and subtraction

25.8 + 1.081 - 0.47=

26.411

Answer:

40

Step-by-step explanation:

Answer:

1 over 4

Step-by-step explanation:

Answer:

the answer is [tex]\frac{1}{-4\\}[/tex]

Step-by-step explanation:

slope= [tex]y_{2}[/tex]-[tex]y_{1}[/tex]

           [tex]x_{2}[/tex]-[tex]x_{1}[/tex]   so 3-2=1 and then 3-7=-4

Answer:

250 thousand pounds

Step-by-step explanation:

Given that:

Area of field 1 = 16 acres

Area of field 2 = 1 1/4 bigger than field 1

Barn of wheat on field 1 = 37 1/2 thousands pounds per acre

Barn of wheat on second field = 1 2/15 as much as field one per acre

Total pounds gathered on field 1 :

37 1/2 * 16 = 600 thousand pounds

Area of second field :

1 1/4 * 16 = 5/4 * 16 = 20 acres

Barn of wheat per acre = 1 2/15 * 37 1/2

= 17/ 15 * 75/2 = 42 1/2 thousand pounds per acre

Total = 42 1/2 * 20 = 850 thousand pounds.

850 - 600 = 250 thousand pounds

Answer: 1.37 miles

Step-by-step explanation:

13.7=100%

13.7/10=1.37=10%=1/10

Answer:

5

Step-by-step explanation:

A = 50.2654825

idk it could be 6

Answer:

I think it might be C or B

Step-by-step explanation:

Hope this helped have a nice day :)

Answer:

i believe it would be 45 is greater than or equal to 3x + (3x-1) + [(3x-1)-4]

I hope you pass. Plz correct me If I am wrong

Step-by-step explanation:

Answer:

I think its 33.333333333333%

Step-by-step explanation:

Answer:

4(7 + 16)

Every other answers does not equal 92

28+64=92

4(7+16)

7+16=23

23x4=92

Answer:

7^39

Step-by-step explanation:

[tex](7^{13})^{3} * 7^{0} \\\\(7^{13*3}) * 1 \\\\=7^{39}[/tex]

Answer:

A,B and C

Step-by-step explanation:

Answer:

I belive that the answer is 8

Answer:

10 and 8 and 18,

Step-by-step explanation:

first of all 18 is half of 19, and 10 and 8 are between 9

Answer: B

Step-by-step explanation:

Answer i guess its b then

Step-by-step explanation:

Answer:

Slope = rise/run or y2-y1/x2-x1 (change in y over change in x)

Y-intercept (I'm assuming you mean y-intercept instead of y axis) = if there's a graph, find where the line intersects the y axis, if there isn't a graph, use y=mx+b to solve for b, the y-intercept.

Hope this helps!

Answer:

Step-by-step explanation:

1. Solution for 3(6a)a=3 equation:

Simplifying

3(6a) * a = 3

Remove parenthesis around (6a)

3 * 6a * a = 3

Multiply 3 * 6

18a * a = 3

Multiply a * a

18a2 = 3

Solving

18a2 = 3

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Divide each side by '18'.

a2 = 0.1666666667

Simplifying

a2 = 0.1666666667

Take the square root of each side:

a = {-0.408248291, 0.408248291}

2.Solution for 5d(4)d=-2 equation:

Simplifying

5d(4) * d = -2

Reorder the terms for easier multiplication:

5 * 4d * d = -2

Multiply 5 * 4

20d * d = -2

Multiply d * d

20d2 = -2

Solving

20d2 = -2

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Divide each side by '20'.

d2 = -0.1

Simplifying

d2 = -0.1

Reorder the terms:

0.1 + d2 = -0.1 + 0.1

Combine like terms: -0.1 + 0.1 = 0.0

0.1 + d2 = 0.0

Answer:

He has 1000 text messages.

Step-by-step explanation:

50 for a month and 0.05 for every text message

0.05x100=5

0.05x1000=50

[tex]\frac{3}{11}[/tex]

Answer:

Let 7x be the rent paid for backhoe for seven hours.

Step-by-step explanation:

Keyword: maximum amount, the most

    Inequality symbol:  ≤

     (800 × 5) + 7x ≤ 9,000

     4,000 + 7x ≤ 9,000

     7x ≤ 9,000 - 4,000

     7x ≤ 5,000

     7x ÷ 7  ≤  5,000 ÷ 7

     x ≤ 714.29

To the nearest hundreds:

     x ≤ 700

ANSWER:  The maximum rental fee per hour  of backhoe is Php 700.00 (rounded off to the nearest hundreds).

To check if he paid less than 9,000 for the total rent:

    (800 × 5) + (700 × 7) < 9,000

    4,000 + 4,900 < 9,000

    8,900 < 9,000    (True)

Answer:

1. Median

2. 4.5

Step-by-step explanation:

There are 10 numbers so the median is 4 and 5 which makes the median 4.5.

HOPE THIS HELPS

PLZZ MARK BRAINLIEST

Answer:

1. Median

2. 4.5

Step-by-step explanation:

There are 10 numbers so the median is 4 and 5 which makes the median 4.5.

HOPE THIS HELPS

PLZZ MARK BRAINLIEST

Answer:

45 degrees

Step-by-step explanation:

when an angle is bisected both angles formed are equal, so 90/2=45

Answer:

10) It increased by appoxamately 17%.

11) 255 decreased by 20%

12) 15 increased by [tex]66\frac{2}{3}[/tex]%

13) $9,450

14) $149.8

15) $238.5

Step-by-step explanation:

10) 170 is greater than 150 by 25. 25 is [tex]16\frac{2}{3}[/tex]% of 150, so it increased by appoxamately 17%.

11) 225 is decreased by 45. 45 is 20% of 100, so 255 decreased by 20%

12) 15 is increased by 10. 10 is [tex]66\frac{2}{3}[/tex] of 15, so 15 increased by [tex]66\frac{2}{3}[/tex]%

13) 5% of 9,000 is 450. 450 + 9,000 is $9,450

14) 7% of 140 is is 9.8. 140 + 9.8 = $149.8

15) 6% of 225 is 13.5. 225 + 13.5 = $238.5

Answer:6.67 for number 1

Step-by-step explanation:

Answer:

Answer 1 is 550

and 2 is also 550

Step-by-step explanation:

Answer:

270°

Step-by-step explanation:

(x , y) --> (y, -x)

90° clockwise rotation

270° anti-clockwise rotation

Answer:

$37.05

Step-by-step explanation:

thats what i got so it might not be right

Answer:

The answer is -4 :)

Step-by-step explanation:

Answer:

-20 divided by 5 = -4

Step-by-step explanation:

Answer:

1) [tex]\sqrt{-48}=4\sqrt{3} \ i[/tex]

2) [tex]\sqrt{-63}=3\sqrt{7} \ i[/tex]

3) [tex]\sqrt{-72}=6\sqrt{2} \ i[/tex]

4) [tex]\sqrt{-24}=4\sqrt{6} \ i[/tex]

5) [tex]\sqrt{-84}=2\sqrt{21} \ i[/tex]

6) [tex]\sqrt{-99}=3\sqrt{11} \ i[/tex]

Step-by-step explanation:

We need to simply the following :

Note: For all questions given we know that [tex]\sqrt{-1}=i[/tex] using it in all the given questions.

1) [tex]\sqrt{-48}[/tex]

Factors of 48 are: 2x2x2x2x3

[tex]\sqrt{-48}\\=\sqrt{48}\sqrt{-1} \\=\sqrt{2\times2\times2\times2\times3}\ i\\= \sqrt{2^2\times2^2\times3}\ i\\=2\times2\sqrt{3} \ i \\=4\sqrt{3} \ i[/tex]

2) [tex]\sqrt{-63}[/tex]

Factors of 63 are: 3x3x7

[tex]\sqrt{-63}\\=\sqrt{63}\sqrt{-1} \\=\sqrt{3\times3\times7}\ i\\= \sqrt{3^2\times7}\ i\\=3\sqrt{7} \ i[/tex]

3) [tex]\sqrt{-72}[/tex]

Factors of 72 are: 2x2x2x3x3

[tex]\sqrt{-72}\\=\sqrt{72}\sqrt{-1} \\=\sqrt{2\times2\times2\times3\times3}\ i\\= \sqrt{2^2\times3^2\times2}\ i\\=2\times3\sqrt{2} \ i \\=6\sqrt{2} \ i[/tex]

4) [tex]\sqrt{-24}[/tex]

Factors of 24 are: 2x2x2x3

[tex]\sqrt{-24}\\=\sqrt{24}\sqrt{-1} \\=\sqrt{2\times2\times2\times3}\ i\\= \sqrt{2^2\times2\times3}\ i\\=2\sqrt{2\times3} \ i \\=2\sqrt{6} \ i[/tex]

5) [tex]\sqrt{-84}[/tex]

Factors of 84 are: 2x2x3x7

[tex]\sqrt{-84}\\=\sqrt{84}\sqrt{-1} \\=\sqrt{2\times2\times3\times7}\ i\\= \sqrt{2^2\times3\times7}\ i\\=2\sqrt{21} \ i[/tex]

6) [tex]\sqrt{-99}\\[/tex]

Prime factors of 99 are: 3x3x11

[tex]\sqrt{-99}\\=\sqrt{99}\sqrt{-1} \\=\sqrt{3\times3\times11}\ i\\= \sqrt{3^2\times11}\ i\\=3\sqrt{11} \ i \\=3\sqrt{11} \ i[/tex]