Anna finishes 5 homework problems in 15 minutes. Kailey finishes 10
homework problems in hour. Are they working at the same rate?

Answer:

9x^2 -2x+8

Step-by-step explanation:

( 9x^2 -5x) - ( -3x -8)

Distribute the minus sign

( 9x^2 -5x) +3x +8

Combine like terms

9x^2 -2x+8

The x^2 should be positive and you have it as negative

Answer:

Their is not supposed to be a negative sign infront of the 9x

Step-by-step explanation:

Step-by-step explanation:

If the variable is n, then

(13×n)-5

13n-5

Answer:

13n - 5

Step-by-step explanation:

Answer:

y = -1/14x - 20/7

Step-by-step explanation:

An equation consists of y = mx + b.

- When a line is perpendicular, the slope becomes the opposite.

14 = -1/14

- Now, that we have the slope, all we need to do is find the y-intercept/b.

y = -1/14x + b

-3 = -1/14(2) + b

-3 = -1/7 + b

-20/7 = b

Answer:

342 hours

Step-by-step explanation:

114 x 2 = 228

228 + 114 = 342

114 hours fishing

228 hours swimming

Hope this helps, please leave any questions in the comments. Thanks

Answer:

Hi,

Step-by-step explanation:

Using Al's kashi theorem,

diag²=9²+23²-2*9*23*cos(80°)=538,109654....

diag=23,197190... (ft)

Answer:

A

Step-by-step explanation:

As the sum of angles should be 0 for a straight line, 3x+8x-20+90=180, 3x+8x-20=90

Answer:

first

3x + (8x - 20) = 90

.......

Answer:

1/50000

please mark as brainliest thanks!

Answer:

x=2

Step-by-step explanation:

6x + 2 = 14

Subtract 2 from each side

6x+2-2 = 14-2

6x= 12

Divide by 6

6x/6 = 12/6

x=2

Answer:  x=2

Step-by-step explanation:

Answer:

2 2/3

Step-by-step explanation:

They are all getting multiplied by 3/5 and 2 2/3 is the largest of all the numbers. Hope this helps!

Answer:

9604

Step-by-step explanation:

V = (7/3)³ × 756

= 343/27 × 756

= 9604 ft³

Answer:

-12

Ydbzushsbsksjsbsksudjeke

Answer:

$1790.84

Step-by-step explanation:

The investment will have value of 1000*(1+0.06)^10=1790.84 in 10 years

Answer:

Step-by-step explanation:

14 - k + 3k - 6

= 14 - 6 - k + 3k

= 8 + 2k (Ans)

Answer:

2k+8

Step-by-step explanation:

I did combine like terms hope this was helpful

[tex]Question \: in \: comments[/tex]

Answer:

Step-by-step explanation:

Imaginary. Imaginary numbers are numbers whose squares are negative. They are the square root of minus one, i = √−1, and all real number multiples of i, such as 2i and i√2.

The required set of imaginary numbers are, √-1, √-4, √-5. Option A is correct.

To determine from the options the set of imaginary numbers.

A number system is described as a technique of composing to represent digits. It is the mathematical inscription for describing numbers of a given set by using numbers or other characters in a uniform method. It delivers a special presentation of every digit and describes the arithmetic structure.

Here,
imaginary number are the number such square root of negative numbers,
So, the set of imaginary numbers is  √-1, √-4, √-5.
While all other set are given are not set of imaginary numbers.

Thus, the required set of imaginary numbers are, √-1, √-4, √-5. Option A is correct.

Learn more about the number system here:

https://brainly.com/question/22046046

#SPJ2

Step-by-step explanation:

[tex] \frac{ - 21}{3} - \frac{11}{2} [/tex]

[tex] \frac{ - 21 \times 2 - 11 \times 3}{6} [/tex]

[tex] \frac{ - 42 - 33}{6} [/tex]

[tex] \frac{ - 75}{6} [/tex]

[tex]12.5[/tex]

Answer:

13 + 110 is 1330 is the answer

1/3 + 1/10

= 10/30 + 3/30

= 13/30

Answer:

9

Step-by-step explanation:

[tex]\frac{2\frac{1}{4}}{4} = 9[/tex]

(2 1/4) / 4 = 9

Hope it helps,... Chow,...!

Answer:

(a+b+c)(x+y+z)

Each term is multiplied by the same value

Step-by-step explanation:

a (X+y+z) + b(x+y+z)+c(x+y+z)

=ax+ay+az+bx+by+bz+CX+cy+cz

=x(a+b+c) + y(a+b+c) + z(a+b+c)

=(x+y+z) (a+b+c)

The multiplicative inverse is 1 / (4c + 5).

In mathematics, the multiplicative inverse of a number is the reciprocal of that number. In other words, if we have a non-zero number "a", then its multiplicative inverse is the number "1/a", which when multiplied by "a" gives the product of 1.

The multiplicative inverse of a number a is the number that when multiplied by a gives the product of 1. In other words, if a is not equal to 0, the multiplicative inverse of a is 1/a.

In this case, we are given that 4c + 5 is not equal to 0. Therefore, the multiplicative inverse of 4c + 5 is:

1 / (4c + 5)

So, the correct answer is 1 / (4c + 5).

To know more about multiplicative inverse follow

https://brainly.com/question/13762649

#SPJ1

Answer:

B is not a function

Step-by-step explanation:

The vertical line would touch the parabola 2 times.

The fraction that is equal to 0.375 is 3/8.

Hope this helps! :)

Answer:

4

Step-by-step explanation:

the ratio is 8/5, so the inverse would be 5/8, then it went up to 10, so it would be 10/4

Answer:

C

Step-by-step explanation:

-3 is the y intercept, where the line crosses the y axis

-2.666667 is the slope, rise over run

Answer:

C

Step-by-step explanation:

this is the answer because both sides are parallel

when on a graph

Step-by-step explanation:

all you needed to do was a quick search on the internet : "volume of a cone".

and you get immediately :

pi×r²×h/3

the reason is similar to all other volume formulas : base area times height. for pyramids and cones there are factors included to reduce this a bit, because they simply don't go straight up from their base area, so they have less volume than comparable objects that do go straight up (like a cylinder compared to a cone).

r = radius

h = height

so, for a) we only need to use the calculator :

pi × 5² × 30 / 3 = pi×25×10 = 785.4 ≈ 785 m³

for b) we need to do the same thing, but with r = 10 and h = 60.

pi × 10² × 60 / 3 = pi×100×20 = 6283.2 ≈ 6283 m³

so, for c) we only need to subtract the result of a) from the result of b)

the frustum is the volume of the large cone minus the volume of small, top cone.

6283 - 785 = 5498 m³