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3 years ago

Anybody know how to do this??

Mathematics

2 answers:

slava [35]3 years ago

8 0

Answer:

option 2:- x= (23.5)(1.18)

Step-by-step explanation:

it includes the whole amount plus the tip to be paid after dinner..

Natali5045456 [20]3 years ago

7 0

Answer:

Second option: x= (23.5)(1.18)

Step-by-step explanation:

It has the total and the 1 for the tip to include the original price.

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Marcus invested $2000 in a bank account earning simple interest. The interest, I, he has after t years at an interest rate r is

Whitepunk [10]

Answer:

Step-by-step explanation:

<h3>Given</h3>

<u>The equation for simple interest:</u>

I = 2000rt

<u>And values</u>

Total = $2160
t = 2
r = ?

<h3>Solution</h3>

<u>Interest amount is</u>

$2160 - $2000 = $160

<u>Solving for annual interest rate</u>

160 = 2000*2r
160 = 4000r
r = 160/4000
r = 0.04
0.04*100% = 4%

Annual interest rate is 4%

6 0

3 years ago

Read 2 more answers

Who can finish this for me

Paladinen [302]

Answer:

Step-by-step explanation:

$(5 - 5 {x}^{4} - {x}^{3} ) - (6 {x}^{3} - 4 {x}^{4} - 3)$

Remove unnecessary parentheses

$5 - 5 {x}^{4} - {x}^{3} - (6 {x}^{3} - 4 {x}^{4} - 3)$

When there is a (-) in front of an expression in parentheses, change the sign of each term in the expression

$5 - 5 {x}^{4} - {x}^{3} - 6 {x}^{3} + 4 {x}^{4} + 3$

Collect like terms

$5 + 3 - 5 {x}^{4} + 4 {x}^{4} - {x}^{3} - 6 {x}^{3}$

$5 + 3 - {x}^{4} - 7 {x}^{3}$

Add the numbers

$8 - {x}^{4} - 7 {x}^{3}$

Use the commutative property to reorder the terms

$- {x}^{4} - 7 {x}^{3} + 8$

Hope this helps...

Best regards!!

8 0

4 years ago

If you know 72=9×8,then _is_times as many as_

Leokris [45]

Answer:

10 is 10 times as many as 10

Step-by-step explanation:

7 0

3 years ago

Which number produces a rational number when multiplied by 0.25

luda_lava [24]

Is there any options for this question ?

3 0

3 years ago

A train traveling at a constant speed takes a passenger from Elm to Millwood, stopping at Centre along the way. It takes 2004-01

ZanzabumX [31]

The complete problem is as following:
A train traveling at a constant speed takes a passenger from Elm to Millwood, stopping at Centre along the way. It takes 5 times as long to go from Centre to Millwood as it does to go from Elm to Centre. The entire trip is 48 miles. How far is the ride from Centre to Millwood? Name a geometric postulate or theorem used to find the solution.
A) 8 miles ; segment addition postulate
B) 8 miles; segment bisector theorem
C) 40 miles; segment addition postulate
D) 40 miles; segment bisector theorem
=======================================================
Solution ;
Let the time taken from Elm to Centre = x ⇒⇒⇒ segment (1)

∴ the time taken from Centre to Millwood = 5x ⇒⇒⇒ segment (2)

∴ Total time of all the trip = x + 5x = 6x
The entire trip is 48 miles and the train traveling with constant speed
∴ speed = distance over the time = $\frac{48}{6x} = \frac{8}{x}$
So, the distance from Centre to Millwood = speed * time = $\frac{8}{x} * 5x = \framebox{40 \ miles}$
As seen in the answer, we have added the segment (1) to segment (2)
So, The geometric postulate used to find the solution is segment addition postulate

So, the correct option is C) 40 miles; segment addition postulate

=======================================================
Another solution :
From Elm to Centre = x ⇒⇒⇒ segment (1)
From Centre to Millwood = 5x ⇒⇒⇒ segment (2)
∵ The train traveling with constant speed
∴ Distance is proportional with the time
By using the ratio and proportional as following

$Segment (1) : segment (2) : Total \\ \ \ 
. \ \ \ \ \ \ \ x \ \ \ \ \ \ : \ \ \ \ \ 5x \ \ \ \ \ \ \ : \ \ 6x \\
. \ \ \ \ \ \ \ ? \ \ \ \ \ \ : \ \ \ \ \ \ \ ? \ \ \ \ \ \ \ \ : \ \ \ 48$

∴ segment (2) = $\frac{48 * 5x}{6x} = \framebox {40 miles}
$

we have used the postulate of segment addition to add x and 5x.

So, the correct option is C) 40 miles; segment addition postulate

4 0

4 years ago