which is the best estimate for this expression ?
a) 300
b) 40
c) 3
d)0.4​

Answer:

5:9

Step-by-step explanation:

Number of sharks = 4

Number of dolphins = 5

Number of animals = number of sharks + number of dolphins

Number of animals = 4 + 5 = 9

Therefore, the ratio of dolphins to animals = 5:9

Step-by-step explanation:

So we know that for 12 rock cakes we need 225g flour and 75g sugar to get 42 rock cakes we need to multiply the number of ingredients by 3.5 (42/12 =3.5)

This gets us 787.5 g flour and 262.5 g sugar.

Show work:

[tex]42 \div 12 = 3.5[/tex]

[tex]225 \times 3.5 = 787.5[/tex]

[tex]75 \times 3.5 = 262.5 [/tex]

[tex]787.5 < 800[/tex]

[tex]262.5 < 300[/tex]

Nishat has enough flour and sugar to make 42 rock cakes.

Answer:

$0.65 per pound

Step-by-step explanation:

Divide the total cost by the number of pounds to find price per pound.

$2.60 ÷ 4 = $0.65 per pound

Answer:

B, or [tex]\frac{3}{2}[/tex]

Step-by-step explanation:

Got 100% on my quiz. Other guy is incorrect.

Answer:

[tex]x=-\frac{3}{7}[/tex]

Step-by-step explanation:

[tex]4x-3=11x\\\\4x-3+3=11x+3\\\\4x=11x+3\\\\4x-11x=11x-11x+3\\\\-7x=3\\\\\frac{-7x=3}{-7}\\\\\boxed{x=-\frac{3}{7}}[/tex]

Hope this helps.

Answer:

400

Step-by-step explanation:

Answer:

400

Step-by-step explanation:

Answer:

2x + 5y = 36 in standard form

Step-by-step explanation:

m = [tex]\frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]

y - [tex]y_{1}[/tex] = m( x - [tex]x_{1}[/tex] )

~~~~~

(3, 6)

(8, 4)

m = [tex]-\frac{2}{5}[/tex]

y - 6 = [tex]-\frac{2}{5}[/tex] ( x - 3 )

y = [tex]-\frac{2}{5}[/tex] x + [tex]\frac{36}{5}[/tex] in slope-intercept form

2x + 5y = 36 in standard form

Answer:

D.

Step-by-step explanation:

right on edge 2022

Answer:

[tex] \frac{28}{45} [/tex]

Step-by-step explanation:

Please see the attached picture for the full solution.

Answer:

the answer is on google

Answer:

Step-by-step explanation:

y = f(x) = - [tex]\frac{1}{2}[/tex] x - 3

f(- 4) = - [tex]\frac{1}{2}[/tex] (- 4) - 3 = - 1

f( - 2) = - [tex]\frac{1}{2}[/tex] (- 2) - 3 = - 2

x ║ - 4 ║ - 2 ║ 0 ║ 2 ║ 4 ║

y ║ - 1 ║ - 2 ║ - 3║- 4║- 5║

Answer:

6.45 feet

Step-by-step explanation:

He starts 17 and 1/2 feet off the ground

Elevation relative to ground: 17 1/2

Then he increases the height by 4 and 3/4

Expression: 17 1/2 +4 3/4

Elevation relative to ground: 22 1/4

Next he decreases the elevation by 15.8 feet

Expression: 22.25-15.8

Elevation relative to ground: 6.45

The answer 6.45 feet from the ground

Answer:

B. A = 1, B = 0, C = 8

Step-by-step explanation:

The equation of a vertical line is

x = c

where c is the value of the x- coordinates the line passes through.

The line passes through (8, 6) with x- coordinate 8, thus

x = 8 is the equation of the vertical line

In comparison to

Ax + By = C, then

A = 1, B = 0, C = 8, that is

x + 0 = 8

x = 8 being the required equation

Answer:

A, because the difference between 2.5 and 3 3/4 is 1. Thanks!

Answer:

I think it is 7.86.

Step-by-step explanation:

You should change 8 1/3% to a decimal that equals 8.33333333333. I then had took 64/8.33333333333 which equaled 7.86.

If this helped please feel free to click the thanks button below. Thank you! :-D

Given:

The system of equations is

[tex]y=-6x+10[/tex]

[tex]y=-6x+3[/tex]

To find:

The solution of given system of equations.

Solution:

Slope intercept form of a line is

[tex]y=mx+b[/tex]

where, m is slope and b is y-intercept.

For [tex]y=-6x+10[/tex], slope is -6 and y-intercept is 10.

For [tex]y=-6x+3[/tex], slope is -6 and y-intercept is 3.

Slopes of both lines are but the y-intercepts are difference. So, the two lines are parallel.

Therefore, the given system of equation has no solution.

Answer:

120

Step-by-step explanation:

Divide 2400 by 20 to get your answer! It may be wrong

Answer:

W = 40

L = 60

Step-by-step explanation:

L = 20 + W

L*W = 2400

(20 + W)*W = 2400

W^2 + 20*W - 2400 = 0

(W + 60)*(W - 40) = 0

W = 40 (yards)

L = 20 + W

= 20 + 40 = 60

W = 40

Answer: 31: -12, -2

              32: -6, 3

              33: 4, -4

              34: 1, 8

              35: 2, -6

              36: 2, -3

              37: -5, -6

              38: -8, 9

              39: 7, 0

Step-by-step explanation:

Hope this helps!

Answer:

31. -12, -2

32. 6, -3

33. -4, 4

34. 8, 1

35. -6, 2

36. -3, 2

37. -6, -5

38. 8, -9

39. 7, 0

Step-by-step explanation:

31. -12 + -2 = ‐14 and -12 x -2 = 24

32. 6 + -3 = 3 and 6 x -3 = -18

33. -4 + 4 = 0 and -4 × 4 = -16

34. 8 + 1 = 9 and 8 x 1 =8

35. -6 + 2 = -4 and -6 x 2 = -12

36. -3 + 2 = -1 and -3 x 2 = -6

37. -6 + -5 = -11 and -6 x -5 = 30

38. 8 + -9 = -1 and 8 x -9 = -72

39. 7 + 0 = 7 and 7 x 0 = 0

Answer:

b) No solutions

Step-by-step explanation:

y=2x+1

y= 2(x+3)

Substitute the y in y=2x+1 with 2(x+3)

2(x+3)=2x+1

Then distribute the 2.

2x+6=2x+1

Subtract 2x from both sides to isolate the variable.

6=1

this statement is false, meaning the system of equations has no solutions.

Answer:

a= -4

Step-by-step explanation:

subtract 4a from both sides

add 15 to both sides

divide both sides by -3

(order of operations)

Answer: positive,negative,zero,undefined,

Step-by-step explanation:

Equations examples

Positive: y=7x-4

Negative:-5x+3

Zero:y=0x-3

Undefined : x=3

Hope the image I attached helps you identify the slope easier :)

The four types of slopes are negative, positive, zero, and undefined.

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

Slopes come in 4 different types: negative, positive, zero, and undefined.

Examples of equations

Positive: y=7x-4

Negative: -5x+3

Zero : y=0x-3

Undefined : x=3

Therefore, the four types of slopes are negative, positive, zero, and undefined.

To learn more about the slope of a line visit:

https://brainly.com/question/14511992.

#SPJ2

Answer:

3

Step-by-step explanation:

PLEASE MARK BRAINLIEST

Answer:

3

Step-by-step explanation:

Answer:

they ate 3/4 part of pizza

Step-by-step explanation:

=1/2+1/4

=1×2/2×2 + 1/4

=2/4+1/4

=3/4

Answer:

B) 1/4 because if the pizzas have 8 slices then 1/4=2 slices and 1/2=4 slices    4-2=2 and 2 slices equal 1/4 of the pizza.

Step-by-step explanation:

Hope it helps!

Have a good day/night :)

Brainliest pls?

Answer: B.

[tex]12x^{2}[/tex] [tex]-8xy + 12x + y^2 - 2y[/tex]

Step-by-step explanation:

i just took the assignment

Answer:

t = 15 s

Step-by-step explanation:

A projectile is thrown upward so that it's distance above the ground after t seconds is as follows :

[tex]h=-16t^2+480t[/tex] ...(1)

We need to find after how many seconds does it reach its maximum height. For maximum height, put [tex]\dfrac{dh}{dt}=0[/tex]

[tex]\dfrac{d(-16t^2+480t)}{dt}=0\\\\-32t+480=0\\\\t=\dfrac{480}{32}\\\\t=15\ s[/tex]

So, it will reach its maximum height in 15 seconds.

Answer:

1/2 a minute.

Step-by-step explanation:

You multiply 1/6 by 3 and get 3/6, then simplify and end with 1/2.

Answer:

It will take Kim 3/6 or 1/2 of a minute to eat the apple

Step-by-step explanation:

Answer:

AB and AC

Step-by-step explanation:

I think I'm not 100 but....

Answer:

sorry i needed the points for school

Step-by-step explanation:

Answer:

x > 3

Step-by-step explanation:

-7x < -21

Divide each side by -7, remembering to flip the inequality

-7x/-7 > -21/-7

x > 3

Answer:

x > 3

Step-by-step explanation:

Get the variable (x) by itself. Divide both sides by -7. Since a negative/ negative = positive, the 3 is positive.  When you multiply or divide by a negative, the inequality sign flips. I hope this helped.

Answer:

The answer is C:$21.00

Step-by-step explanation: