solve the quadratic 3x^2+x-5=0

Answer: (b+5)(b-5)

Step-by-step explanation:

both b^2 and 25 are square numbers, so square root both of them to give b and 5, then put into brackets with a + and -

Answer:

65°

Step-by-step explanation:

2x= 130° (vertically opposite angles)

x= 130/2

x= 65°

Answer:

x = 65

Step-by-step explanation:

Answer:

42-(-26)

Step-by-step explanation:

you're just subtracting a negative and positive

Answer:

D. y = 2x

Step-by-step explanation:

The slope of the line is 2, so you get 2x. Therefore, the equation is y = 2x.

Answer:

the equation is answer D

Step-by-step explanation:

the slope is 2 and the y-intercept (b) is zero so it isn't written.

The rate of change is 2/3

rise = 2

run = 3

rise/over = 2/3

Answer: 2/3 is gonna be your answer. Trust me I have done this exact

g o o g l e form before!

Step-by-step explanation:

Answer:

[tex]log_{4}(\frac{2x}{6y})[/tex]

Step-by-step explanation:

According to the Quotient Rule (Logarithmic Property):

[tex]log_{a}x - log_{a}y = log_{a}(\frac{x}{y})[/tex]

Therefore, you could combine the logarithmic expressions as:

[tex]log_{4}2x - log_{4}6y = log_{4}(\frac{2x}{6y})[/tex]

Optional:

If ever you're required to simplify it further, [tex]log_{4}(\frac{2x}{6y})[/tex] will be:

[tex]log_{4}(\frac{2x}{6y}) = log_{4}(\frac{x}{3y})[/tex]

3 7/9

Step-by-step explanation:

34/9

= 34 ÷ 9 = 3 remain 7

= 34 = 9 × 3 + 7

so

34/9

= 3 7/9

Answer:

34/9 is already in it's simplest form but can be written as a decimal:  3.777778

Step-by-step explanation:

1. Find the HCF of both numbers which is 1

2. Divide them both by the HCF

3. 34/1 = 34

4. 9/1 = 9

5. Therefore there is no simpler fraction but you can write it as a decimal.

Answer:

(4,0)

Step-by-step explanation:

Both lines intersect, or cross, at one point on the graph, which is (4,0). Therefore, that point is a solution to the system of equations.

Hope this helps!

Answer:

2.11764705

Step-by-step explanation:

Brainliest?

Answer:

Sorry i don't speak Vietnam so i can't help you if you write it in English i will have a chance to help you

Answer:

Mean = 90, Median = 93, Mode = 90, Range = 6

Step-by-step explanation:

Mean:

96 + 90 + 94 + 93 + 90 = 463

463 ÷ 5 = 92.5

92.5 to nearest tenth = 90

Mean = 90

Median:

90, 90, 93, 94 ,96

Median = 93

Mode

96, 90, 94, 93, 90

Mode = 90

Range:

96 - 90 = 6

Range = 6

The population density of the city which is the ratio of population size and the land area is 1419 people per square mile.

The population of the city on 2015 can be calculated thus :

The population of a city is calculated using the relation :

Therefore, the population density is 1419 people per square mile.

Learn more: https://brainly.com/question/18796573

Answer:

A 5.25, B 5.75, C 10.25, D 25.8125

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

there will be 10 students in 4 groups

Answer:

As I analysed it for me yes it is

Answer:

129

Step-by-step explanation:

278 - 149 = 129

Answer:

the answer is 129

Step-by-step explanation:

278-149=129

Answer:

I did this

Step-by-step explanation:

Answer:  3/2

Step-by-step explanation:

Answer: 110 degrees

Triangle sum theory tells us that all the internal angles are equal to 180.

Meaning, we can solve 2x+3x+3x+4=180 for x

x=22

Then solve for 3x+4, which equals 70.

Last step, take 70 from 180 to find the external angle!

110 :)

Answer:

Exterior angle is equal to 110

Step-by-step explanation:

So to find the exterior angle, you must find the interior angle first.

You know that all 3 angles within the triangle must equal to 180 degrees, so what we can do is set up this equation to reflect that statement:

2x+3x+(3x+4) = 180

Group like terms:

8x+4=180

Solve for x:

8x = 176

x = 22

We can double check to see this matches up with all of the other angles inside:

2x = 44

3x = 66

3x+4 = 70

44 + 66 + 70 = 180

We also know that a straight line is 180 degrees

So, ? = 180 - 70

? = 110 degrees

Answer:

r = c/2π

Step-by-step explanation

2πr = C

move 2π to the other side it will become division as 2π is multiplying r

r = C/2π

9514 1404 393

Answer:

  15.7°

Step-by-step explanation:

The law of cosines can be used to find side s:

  s² = r² +q² -2rq·cos(S)

  s² = 8² +9.4² -2(8)(9.4)·cos(151°) ≈ 283.903

  s ≈ 16.849

Then the law of sines can be used to find angle Q.

  sin(Q)/q = sin(S)/s

  sin(Q) = (q/s)sin(S)

  Q = arcsin(q/s·sin(S)) = arcsin(9.4/16.849·sin(151°)) ≈ 15.692°

Angle Q is about 15.7°.

Answer:

24

Step-by-step explanation:

To solve, subtract:

111-87= 24

Hope this helps!

Answer:

A = 372 m²

Step-by-step explanation:

The area (A) of a trapezium is calculated as

A = [tex]\frac{1}{2}[/tex] h (b₁ + b₂ )

where h is the perpendicular height and b₁, b₁ the parallel bases

Here h = 12, b₁ = 40 and b₂ = 22 , then

A = [tex]\frac{1}{2}[/tex] × 12 × (40 + 22) = 6 × 62 = 372 m²

Answer:

5120 tiles.

Step-by-step explanation:

Do one thing.

Find out the area of the rectangular hall.

Find out the area of the marble slab.

Remember, the units are to be made same.

Now, to know the number of marble tiles required to fill the hall, you just have to divide the area of the hall with the area of the marble tile.

Calculations-

Area of the rectangular hall = length x width = 1600 x 1200 (we converted 'm' to 'cm') = 1920000 sq. cm.

Area of one marble tile = 25 x 15 = 375 sq. cm.

Now you divide the numbers and get 5120 tiles.

Answer:

the is c because the answer

The correct answer is B: {2, 6, 8}.

The set of first components (x-coordinates) in the ordered pairs is the domain of the relation: {-1, 3, 5}.

The set of second components (y-coordinates) is the range of the relation. The range of the given problem is the set of second components (on the right): {2, 6, 8}.

Therefore, the correct value is B: {2, 6, 8}.

Please mark my answers as the Brainliest if you find my explanations helpful :)