what is 2+2-3+7-9+23-6+78-34+89
what does that equal

Answer:

465 miles

Step-by-step explanation:

D = r * t

D = 62 * 7.5 = 465 miles

Answer:

465

Step-by-step explanation:

We know that the rate is 62 mph. The time is 7.5 h.

Plug it into the existing equation:

D = r × t becomes D = 62 × 7.5

Just stick that into a calculator to get 465.

Answer:

a

Step-by-step explanation:

a

Answer:

4:10

8:20

16:40

1:2.5

Step-by-step explanation:

Given:

Height of box = (x-2)

Volume of box = [tex](x^3-8)[/tex]

To find:

The expression for the base area.

Solution:

We know that,

Volume of a box(V) = Base area(B) × Height(h)

[tex]V=Bh[/tex]

[tex]\dfrac{V}{h}=B[/tex]

On substituting the given values, we get

[tex]B=\dfrac{x^3-8}{x-2}[/tex]

[tex]B=\dfrac{x^3-2^3}{x-2}[/tex]

[tex]B=\dfrac{(x-2)(x^2+2x+2^2)}{x-2}[/tex]   [tex][\because a^3-b^3=(a-b)(a^2+ab+b^2)][/tex]

[tex]B=x^2+2x+4[/tex]

So, the base area is [tex]x^2+2x+4[/tex].

Therefore, the correct option is B.

Answer:

The given lines are parallel.

we already know that for parallel condition we apply;

m1=m2

1/2=0.5

0.5=0.5

Answer: $8.48

Step-by-step explanation: 8x.06 = .48 +8 = $8.48

Answer:

5

Step-by-step explanation:

Answer:

the answer is 5

Step-by-step explanation:

Answer:

i have the same doubt

Step-by-step explanation:

Answer:

the second one

slope is negative go down one right 2

Answer: -2

(I hope this is what you meant)

Hope this helps!

Step-by-step explanation:

Answer:

Aproximately 25 days

Step-by-step explanation:

so he goes 15.12 mph and rides for 8 hours so 15.12*8=120.96

3069.25/120.69

=25.374091 round it to nearest whole number so its 25days

Answer:

Step-by-step explanation:

you start from 2 on the y axis and then go up 4 and right 3 so it will take you to coordinate point (6,3) then you start from 2 on the y axis again and go down 4 and left 3

Answer:

Because you pay attention in school. Thank you for the points!!

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

The answer is C - conjugation

Hope this helps!

Answer:

4% change

Step-by-step explanation:

Answer:

x < y > 2

Step-by-step explanation:

Girls is more than boys, so:

y > x

Girls is more than 2, so:

y > 2

So:

x < y > 2

I hope this helps you :)

Answer:

The easier way to solve this is to find the two points in the coordinate axis, and just draw a line that passes through the two points.

But let's be more complete:

Let's find the equations for each line:

A linear relationship can be written as:

y = a*x + b

where a is the slope and b is the y-axis intercept.

For a line that passes through the points (x1, y1) and (x2, y2), the slope can be written as:

a = (y2 - y1)/(x2 - x1).

1) Here the points are (2,2) and (4,5)

then the slope is:

a = (5 - 2)/(4 - 2) = 3/2

y = (3/2)*x + b

And to find the value of b, we just replace the values of one of the points in the equation, in this case i will use (2, 2)

2 = (3/2)*2 + b

2 = 3 + b

2 - 3 = b

-1 = b

y = (3/2)*x - 1

2) Here the points are (0,1/2) and (2,3/2)

then the slope is:

a = (3/2 - 1/2)/(2 - 0) = 1/2

y = (1/2)*x + b

And to find the value of b, we just replace the values of one of the points in the equation, in this case i will use (0, 1/2)

1/2 = (1/2)*0 + b

1/2 = b

y = (1/2)*x + 1/2

3) Here the points are (-1,2) and (5,0)

then the slope is:

a = (0 - 2)/(5 + 1) = -1/3

y = (-1/3)*x + b

And to find the value of b, we just replace the values of one of the points in the equation, in this case i will use (-1, 2)

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

2 = 1/3 + b

2 - 1/3 = b

5/3 = b

y = (-1/3)*x + 5/3

4) Here the points are (-5,-3) and (-3,5)

then the slope is:

a = (5 + 3)/(-3 + 5) = -4

y = -4*x + b

And to find the value of b, we just replace the values of one of the points in the equation, in this case i will use (-3, 5)

5 = -4*-3 + b

5 = 12 + b

5 - 12 = b

-7 = b

y = -4*x - 7

Now that we have all the equations, we can find the graphs.

where the colors are:

(4) green

(3) orange

(2) Blue

(1) Gray.

Answer:

Step-by-step explanation:

[tex]\left \{ {{xy=5} \atop {4+y=-x}} \right.\\\\<=> \left \{ {{xy=5} \atop {x=-4-y}} \right.\\\\=> \left \{ {{(-4-y)y=5} \atop {x=-4-y}} \right. \\\\<=> \left \{ {{-y^{2}-4y =5} \atop {x=-4-y}} \right. \\\\<=> \left \{ {{y^{2}+4y+5 =0} \atop {x=-4-y}} \right.[/tex]

because y² + 4y + 5 = (y+2)² + 1 > 0, ∀ y ∈ R

=> y² + 4y + 5 = 0 is unreasonable

=> no solutions

Answer:

Yes

Step-by-step explanation:

Scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. For example, 650,000,000 can be written in scientific notation as 6.5 ✕ 10^8. and that is something Very similar.

Hope this helps!

Have a nice day!

If you find my answer helpful

Pls consider marking my answer as Brainliest! It would mean a lot!

Answer:

x = -3/11

Step-by-step explanation:

First, distribute the -3 and 12 within the parenthesis

12 - 9x + 15 = 24x + 12

Now, combine like terms

3 - 9x = 24x + 12

Subtract 24x from both sides of the equation

3 - 33x = 12

Subtract 3 from both sides of the equation

- 33x = 9

Divide both sides by -33

x = -9/33

-9/33 can be simplified to -3/11, so the answer is

x = -3/11

I Hope That This Helps! :)

An equation which models the relationship between X and Y is

y = 54.5x

The correct answer is option (D) y = 54.5x

What is equation?

"A mathematical statement which contains an equal symbol between two algebraic expressions that have the same value."

From given data we can observe that,

163.5/3 = 54.5                           ...................(1)

327/6 = 54.5                              ...................(2)

599.5/11 = 54.5                          ...................(3)

From (1), (2) and (3),

y/x = 54.5

⇒ y = (54.5)x

Therefore, an equation which models the relationship between X and Y is y = 54.5x

The correct answer is option (D).

Answer:

D

Step-by-step explanation:

A unit rate is basically which one increases more as time goes on. Now. to make it easier let me explain visual.

You have 50 apples at the start and every hour you get 200 more apples, sweet!

Now let's look at the chart.

The first one is 200x+100, this is wrong since this has a better start but you don't get as much apples.

Same goes for the B and C. The only one that would make sense is D since you're also adding 10 more apples for each one you increase.

Answer: The first one is 9/49 and in decimal form it's 0.18367... the second one in fraction form is 16807/161051 and in decimal form is 0.10435824...

Step-by-step explanation: hope this helped

Answer:

a. 5

b. 1

c. 132

d. -2

Step-by-step explanation:

a. The square root of 4 is 2, the absolute value of -3 is 3. 2 + 3 = 5

b.  4 - (-3) / -7 = 7/ -7 = 1

c. 2 * 4^3 = 128 + (-3) - (-7) = 132

d. 2 (-7 + 3) = -8, square root to the third power of -8 is -2

I hope this helped, please mark Brainliest, thank you!!

Answer:

Step-by-step explanation:

(17×25)×4=n×(25×4)

or 17×(25×4)=n×(25×4)  

17=n

∵ (a×b)×c=a×(b×c) [by associative law of multiplication.]