Please help for brainliest

Answer:

3x+5

Step-by-step explanation:

That is your answer

Step-by-step explanation:

2^x < 2x³ + 1 ?

that would mean

x < log2(2x³ + 1)

x < log2(2×(x³ + 1/2))

x < log2(2) + log2(x³ + 1/2)

x < 1 + log2(x³ + 1/2)

x - 1 < log2(x³ + 1/2)

for large x the "-1" and the "+ 1/2" are becoming relatively irrelevant for the inequality.

and the limes of this goes to

x < log2(x³)

which is not true for large x, as the logarithm turns into a very flat curve, while "x" just keeps growing with slope 1 and therefore outpaces the logarithm.

for x = 20 for example, 2^x is already way larger than 2x³.

the "cross-over" point is between x=11 and x=12.

from there on 2^x will quickly become much larger than 2x³ + 1.

Answer: 72

Step-by-step explanation:

convert 68% to decimal:

0.68

Multiply by 225

0.68*225

= 153

Subtract:

225-153=
72

Answer:

1436.8 cm3

Step-by-step explanation:

4/3  π r^3 ; r = 7 (substitute)

4/3 π (7)^3 (cube)

4/3 π 21 (reorder)

4/3 (21) π (muptiply)

28 π (multiply)

87.96..... (round)

88cm^3

Answer:

Step-by-step explanation:

Answer:

a) No because the gallons and quarts of oil you and your friend bought is proportional.

b) Yes because the gallons and quarts of oil are no longer proportional.

c) 1 gallon of gasoline = $3.55

   1 quart of oil = $5.00

Step-by-step explanation:

Let g = cost per gallon of gasoline

Let q = cost per quart of oil

a)  Creating expressions from the given information:

10g + 2q = 45.50

5g + q = 22.75

From inspection, we can see that if we multiply the second equation by 2, it will give us the first equation.  Therefore, they are proportional and we cannot determine the variables.

b) Creating expressions from the given information:

10g + 2q = 45.50

5g + q = 22.75

8g + 2q = 38.40

From inspection, we can see that the third equation is not proportional to equations 1 and 2.  Therefore, we can use this equation with either of the other equations to determine the variables.

c)

Using equations 2 and 3 from the previous part (b):

5g + q = 22.75

8g + 2q = 38.40

Rewrite 5g + q = 22.75 to make q the subject:

⇒ q = 22.75 - 5g

Substitute into 8g + 2q = 38.40 and solve for g:

⇒ 8g + 2(22.75 - 5g) = 38.40

⇒ 8g + 45.5 - 10g = 38.40

⇒ 2g = 7.1

⇒ g = 3.55

Substitute found value for g into q = 22.75 - 5g and solve for q:

⇒ q = 22.75 - (5 x 3.55)

⇒ q = 5

Answer:

Step-by-step explanation:

if it is linear then it will be a straight line(gradient is the same)

if quadratic then curve(gradeint isnt the same)

y=mx+c

m=[y(2)-y(1)]/[x(2)-x(1)]

you can choose any 2 points from the table

m=2-0.4/0-1

m=-1.6

repeat but 2 different coordinates

m=0.4-0.08/-1--2==>-2.24

m=-2.24

different coordinate therefore quadratic

cant be exponential, because nothing is being raised to some power

Answer:

Part A: Only 460 is divisible by 2

Part B: 385, and 460 are divisible by 5

Part C: Only 460 works for this one

The x- and y- coordinates of point P on the directed line segment from K to J such that P is Three-fifths the length of the line segment from K to J is  (85, 105).

Given

On a coordinate plane, a line is drawn from point K to point J. Point K is at (160, 120) and point J is at (negative 40, 80).

The coordinates point any point can be found by using the following formula.

[tex]\rm X=\dfrac{m}{m+n}(x_2-x_1)+x_1\\\\ Y=\dfrac{m}{m+n}(y_2-y_1)+y_1[/tex]

The x- and y- coordinates of point P on the directed line segment from K to J such that P is Three-fifths the length of the line segment from K to J is;

[tex]\rm X=\dfrac{m}{m+n}(x_2-x_1)+x_1\\\\ X = \dfrac{3}{3+5}(-40-160)+160\\\\ X = 3 \times (-25)+160\\\\\X = -75+160\\\\ X = 85\\\\\ Y=\dfrac{m}{m+n}(y_2-y_1)+y_1\\\\ Y=\dfrac{3}{3+5}(80-120)+120\\\\Y =- 3\times 5 +`120\\\\Y=-15+120\\\\Y=105[/tex]

Hence, the x- and y- coordinates of point P on the directed line segment from K to J such that P is Three-fifths the length of the line segment from K to J is  (85, 105).

To know more about co-ordinates click the link given below.

https://brainly.com/question/13847533

Answer:

B

Step-by-step explanation:

You're answer would be 6x3 + 14x2 + 6x - 12

Answer:

the answer is 25.50

Step-by-step explanation:

so you multiply 25×.15 which gives 3.75.

you subtrct that from 25. 25-3.75=21.25.

then multiply 21.25 by .20. 21.25×.20=4.25

add that to 21.25 and you get 25.50

Answer:

25.50

Hope it helps

Answer:

I would defend this

Step-by-step explanation:

This makes sense because April is the rainiest month of the year. It's even shown in the say that April showers bring May flowers.

On arranging the given data in ascending order of their magnitudes, we get :

➙ 7 , 9 , 11 , 13 , 15 , 17 , 19

Clearly, n = 7, which is an odd number.

★ Lower Quartile (Q¹)

★ Upper Quartile (Q³)

★ Inter-Quartile range

⇒ Q³- Q¹

⇒ 17 - 9

⇒ 8

Answer:

-9

Step-by-step explanation:

        The additive inverse of 4 is -4. Why? 4 + -4 = 0

-4 - 5 = -9

Answer:

i think -9

Step-by-step explanation:

Answer: the square root of 25 is 5

and also it’s an app called Desmos that finds the square root for you !

Answer:

Step-by-step explanation:

The area of a compound figure is the sum of the areas of its parts. The perimeter is the sum of the lengths of all of the edges.

This compound figure is conveniently divided into a semicircle of radius 2.5 and a trapezoid with bases 5 and 7, and height 3.

Semicircle

The area of the semicircle is half the area of a circle with the same radius. It will be ...

  A = 1/2πr²

  A = 1/2π(2.5²) = 3.125π . . . . square units

Trapezoid

The area of the trapezoid is given by the formula ...

  A = 1/2(b1 +b2)h

  A = (1/2)(5 +7)(3) = 18 . . . . square units

Then the total area of the figure is ...

  3.125π +18 ≈ 27.8 . . . . square units

__

Perimeter

The perimeter will be the sum of the lengths of the straight line segments and the length of the semicircular arc.

Arc

  The arc length is half the circumference of the circle, so is ...

  arc = 1/2(2πr) = πr = 2.5π . . . . units

Diagonal segments

The figure is bounded by two congruent line segments that are each the hypotenuse of a triangle 1 unit wide and 3 units high. The Pythagorean theorem tells us that length is ...

  diagonal length = √(1² +3²) = √10 . . . . units

The two diagonal sides have a total length of 2√10 units.

Horizontal segments

The figure is bounded by two congruent horizontal segments of length 1 unit each, and one horizontal segment of length 5 units. Their total length is ...

  horizontal length = 1 + 1 + 5 = 7 . . . . units

The total perimeter is ...

  perimeter = horizontal length + diagonal length + arc length

  7 +2√10 +2.5π ≈ 21.2 . . . . units

33.5

Step-by-step explanation:

Answer:

[tex]y < -2x+20[/tex]

Step-by-step explanation:

[tex]2x+y < 20[/tex]

[tex]\mathrm{Subtract\:}y\mathrm{\:from\:both\:sides}[/tex]

[tex]2x+y-y < 20-y[/tex]

[tex]\mathrm{Simplify}[/tex]

[tex]2x < 20-y[/tex]

[tex]\mathrm{Divide\:both\:sides\:by\:}2[/tex]

[tex]\frac{2x}{2} < \frac{20}{2}-\frac{y}{2}[/tex]

[tex]\mathrm{Simplify}[/tex]

[tex]x < \frac{20-y}{2}[/tex]

[tex]Also[/tex] [tex]written[/tex] [tex]as[/tex] [tex]y < -2x+20[/tex]

Answer:

y= mx + b

y< -2x +20

Step-by-step explanation:

2x+y<20

Subtract 2x

from both sides of the inequality. y<20

−2x

Rearrange terms. y<−2x+20

[tex][Hello,BrainlyUser][/tex]

Answer:

$20

Step-by-step explanation:

20% More = Markup

20% = .20

$25 * .20 = 5 ( Markup Price)

$25 - 5 = $20

Hence, last month the cost of the cat was $20.

[CloudBreeze]

9² + 6²

→ 81 + 36

→ 117

Answer : 117

It is the last choice

[tex]9x+12y\geq 1000[/tex]

Hope that helps!

Answer:

-1D

Step-by-step explanation:

1D + -4D + 2D = -1D

Answer:

Step-by-step explanation:

Mid point :

[tex] \frac{x_1 + x_2}{2} \: \frac{y_1 +y _2}{2} [/tex]

x1 = 5

y1 = 8

x2 = 1

y2 = 2

Midpoint :

[tex]( \frac{5 + 1}{2} \: \frac{8 + 2}{2} ) \\ ( \frac{6}{2} \: \frac{10}{2} )[/tex]

Simplify

[tex](3 \: 5)[/tex]

The proportion of STEM students who participate in at least one AP course is 0.19.

It can be deduced that the proportion of STEM students who participate in at least one AP course will be:

= 38/200

= 0.19

The proportion of regular students in the sample who participate in at least one AP course will be:

= 70/200

= 0.35

Also, participating in two or more AP courses is independent of student status. This is because the p value is more than the 0.05.

A method that could have been used to select a simple random sample of 200 students from the high school is by writing all the registration numbers of the students in a container an randomly picking.

There is bias in the sampling because the convenience sampling is used. This doesn't give everyone an equal chance.

In conclusion, status is not related to level of participation in AP courses.

Learn more about proportion on:

https://brainly.com/question/19994681

[tex]\\ \rm\Rrightarrow r=2cos\theta-3sin\theta[/tex]

[tex]\\ \rm\Rrightarrow \dfrac{2}{r}cos\theta-\dfrac{3}{r} sin\theta=1[/tex]

[tex]\\ \rm\Rrightarrow 2x-3y=1[/tex]

[tex]\\ \rm\Rrightarrow 2x-3y-1=0[/tex]

Answer:

[tex](x-1)^2+(y+1.5y)^2=3.25[/tex]

Step-by-step explanation:

[tex]x=r \cos(\theta)[/tex]

[tex]y=r \sin(\theta)[/tex]

Given polar equation:

[tex]r=2\cos(\theta)-3 \sin(\theta)[/tex]

Multiply both sides by r:

[tex]r^2=2r\cos(\theta)-3r \sin(\theta)[/tex]

Know that [tex]x^2+y^2=r^2[/tex]:

[tex]x^2+y^2=2r\cos(\theta)-3r \sin(\theta)[/tex]

Substitute [tex]x=r \cos(\theta)[/tex] and [tex]y=r \sin(\theta)[/tex] :

[tex]x^2+y^2=2x-3y[/tex]

Therefore,

[tex]x^2-2x+y^2+3y=0[/tex]

Complete the square:

[tex](x-1)^2-1+(y+1.5y)^2-2.25=0[/tex]

[tex](x-1)^2+(y+1.5y)^2=3.25[/tex]

Answer:

1-5

Step-by-step explanation:

5 - 1 = 4

Answer: The correct answer is 44.60

Step-by-step explanation:

Let's find the area of the rectangle first, and then add it with the area of the Circle to find the total area of the whole shape.

We know that the area of a Rectangle is L(Length) x W(Width)

So using the given information, 8 x 4 = 32

So the Area of the Rectangle = 32

Now let's find the area of the given circle,

Area of a Circle: πr2                                     Remember ^ = stands for power

The radius is half of the diameter

The diameter of the circle is 4

4/2 = 2 which is our radius, and now let's replace it in the equation.

= 3.14(r)^2

= 3.14(2)^2

= 3.14(4)

= 12.56 or some may have got 12.57

So now we add all areas together to get the total area,

32+12.57 = 44.57

Now rounding off to the nearest tenths, would give us 44.60

So the area of the figure rounded to the nearest tenth is 44.60

Answer:

[tex]44.56[/tex]

Step-by-step explanation:

Rectangle area:

[tex]4 \times 8 = 32[/tex]

2 circles area (full circle, since they are both a half of circle):

[tex] { (\frac{4}{2}) }^{2} \times π = 12.56[/tex]

Total area:

[tex]32 + 12.56 = 44.56[/tex]