Solve the system of equations 4x + y = 8 and 5x + 2y = 13 using any method.

Answer:

X = 6

y = 0

Step-by-step explanation:

use elimination method. Multiply (x -4y = 6) by -2.

2x + 2y = 12

-2x + 8y = -12

add them together

10y = 0

y = 0

plug in for y

x - 4(0) = 6

x = 6

Answer: k ≥ 4

Step-by-step explanation:

7 + 4k ≥ 23

subtract 7 on both sides

4k ≥ 16

divide by 4 on both sides

k ≥ 4

the graph:

Answer:

b

Step-by-step explanation:

Answer:

Based on that I would say b. By looking at the graph you can see the way the lines go across the graph.

Step-by-step explanation:

B.

Answer:

A. x1/15

Step-by-step explanation:

Answer:

It would be [tex]x^{\frac{8}{15}}[/tex] or D

Hope this helps

Answer:

[tex]50[/tex] penguins

Step-by-step explanation:

Let [tex]p[/tex] = number of penguins at the zoo

[tex]24\%p=12[/tex] (Is given that 12 Emperor penguins at the zoo make up 24% of total penguins)

[tex]0.24p=12[/tex]

[tex]p=12\div0.24[/tex]

[tex]p=50[/tex]

∴ There are [tex]50[/tex] penguins at the zoo

Hope this helps :)

Answer:

A and B are true

Step-by-step explanation:

The minimum is the turning point on the graph and occurs at (1, - 2)

The x- intercepts are where the graph crosses the x- axis , that is at

x = - 1 and x = 3 or in coordinate form (- 1, 0 ) and (3, 0 )

The equation of the axis of symmetry is a vertical line passing through (1, - 2)

with equation x = 1

The true statements are A and B

Answer:

⇨ A and B choice

Step-by-step explanation:

⟺ Consider all choices.

⥱ Choice A is correct because It's upward Parabola ( a > 0) where there is only the minimum point/value. The minimum point is at (1,-2). The vertex for upward parabola can be called the minimum point.

⥱ Choice B is correct because the Parabola intercepts x-axis at (-1,0) and (3,0) from the graph.

⥱ Choice C is wrong because the Axis of Symmetry is supposed to be x-term/value for the Parabola. If it is the y-value/term then it would be Side Parabola.

⥱ Choice D is wrong because an upward Parabola doesn't have the maximum point. The only Parabola with maximum point is downward Parabola ( a < 0)

9514 1404 393

Answer:

  C  {2, 4, 9, 16}

Step-by-step explanation:

The domain is the list of numbers at the tails of the arrows.

The range is the list of numbers at the heads of the arrows: {2, 4, 9, 16}.

Answer:

12

Step-by-step explanation:

Answer: 12

Step-by-step explanation: Subtract 6 - 4 = 2. 2 * 2 = 4. 4 + 5 = 9. 9 - 3  = 6. 6 +6 = 12

Answer:

7 thousandths

Step-by-step explanation:

ez dub

Answer:

i think it is B

Step-by-step explanation:

because that one isn't really a rate as much as the other ones are, its more of a ratio, i'm bad at explaining things, hope its correct :D

Answer:

$51.20

Step-by-step explanation:

36% of 80 is 28.8

80 - 28.8 = 51.2

Formatted properly, the answer is $51.20

Answer:

Step-by-step explanation:

The answer is $51.20!

Hope this helps!

Answer:

-2/1

Step-by-step explanation:

to find the slope it is rise over run so the rise is two and the run is 1 so its 2/1 but its negative so it would be -2/1

hope that halepd have a good night!! :)

Answer:

400

Step-by-step explanation:

50x80=400, you just ignore the ones digits so its easy to solve. (5x8x100)

Answer:

83.33 milligrams

Step-by-step explanation:

The equation, [tex] 18x = 1500 [/tex] represents the total dosage of antibiotics to be given to the patient in relation to the hours.

Thus, the each dosage = x.

Let's solve for x

[tex] 18x = 1500 [/tex]

Divide both sides by 18

[tex] \frac{18x}{18} = \frac{1500}{18} [/tex]

[tex] x = 83.33 milligrams [/tex] (nearest hundredth)

Answer:

7 would be 56 in both boxes.

8 would be 75 in both of the boxes.

9 would be 3 in both of the boxes.

10 would be 60 in both of the boxes.

11 would be 62 in both boxes.

and 12 would be 5 in both boxes.

Step-by-step explanation:

If you need an explanation you can message me and I'll break it down for you

Answer: The third one

Step-by-step explanation: open circle, with crocodile sign pointing to right which means u have to go left! Have a nice day!!

Answer:

C) a number line going from negative 6.5 to negative 5.8. An open circle is at negative 6.1. Everything to the left of the circle is shaded.

Step-by-step explanation:

Open circle means < or >

Closed circle means < or >

So has to be an open circle since the sign is <. it also says w < -6.1

so w has to be less than -6.1. So less than -6.1 would be -6.2, -6.3, -6.4etc.

Answer:

84

Step-by-step explanation:

Let the number be x.

As the number is multiple of 3 and 4, so the number must be a multiple of the lowest common factor (LCM) of 3 and 4.

LCM(3,4)=12

So, the number, x, is a multiple of 12.

All the numbers between 30 and 99, which are multiples of 12 are 36, 48, 60, 72, 84, 96.

When x is divided by 5, the remainder is 4, so the unit digit of the number is 4.

Now, the number between 30 and 99, which is multiple of 12 and having the unit digit 4 is 84.

Hence, the required number is 84.

Answer:

Triangle RST is an equilateral triangle.

Step-by-step explanation:

All three sides of the triangle are of equal length, therefore, because an isosceles triangle is when 2 sides of the triangle are the same length, a scalene triangle being when all sides are of different lengths, and a right triangle having a right angle (a 90 degree angle), this only leaves equilateral, all three sides being the same length, like in the triangle shown.

Answer:

$53

Step-by-step explanation:

Hope this helped you!! Find 6% of 50 then add it to 50. Give brainliest

Answer:

The answer is 4w-5 its in its simplest form

Answer:

11 cars/day

Step-by-step explanation:

What we know:

After two days, Car-Mart has 43 cars left. After 3 days, it is 32. After five, 10 cars.

Saying that, subtract 32 from 43 to get your rate of 11 cars sold a day.

I can further deduce they started with 76 cars. On day 1 they had 65 cars. On day 4 they had 21 cars. They will have sold all of their cars after day 6.

Answer:

No solution (read below)

Step-by-step explanation:

Formula:

a_n = a_1 + (n-1)d

N is the term #

D is the common difference

First, let's find the common difference.

13 - (-15) = 28

Let's see if that checks out.

31-13 = 18

49 - 31 = 18

18 is not equal to 28

Since there is no common difference you cannot find the equation.

Please tell me if you made a typo and comment on my answer, then I can help you find the answer

Answer:

B

Step-by-step explanation:

Pretty much what the solution says. Increasing from -∞ to 0, then 2 to ∞. Decreasing between 0 and 2.

Hope this helps!

Answer:

An angle is by the right angle paq is to the left

Step-by-step explanation:

hope this helped

Answer:

Subtract 75 from both sides.