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GenaCL600 [577]
3 years ago
15

the difference of two numbers is 9 The larger number is 6 less then twice the smaller number. gind the number

Mathematics
2 answers:
solong [7]3 years ago
7 0
The numbers are 15 and 24
KonstantinChe [14]3 years ago
4 0
Hi there!

To solve this problem, we need to set up two equations.

Let x equal the larger number.
Let y equal the smaller number.

x - y = 9
x = 2y - 6

Those are our two equations ^.

Since we know that x is equal to 2y - 6, we can plug the value of x into the equation x - y = 9 and find y.

x - y = 9
x = 2y - 6

2y - 6 - y = 9
2y - y - 6 = 9
y - 6 = 9
y = 9 + 6
y = 15

Now, we do the same to the value of y - plug it into the equation - and solve for x:

y = 15
x - y = 9
x - 15 = 9
x = 9 + 15
x = 24

So, the numbers are 24 and 15.

Hope this helps!
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Herman is traveling 125 miles from his house to the beach by car. Herman plans to stop for lunch when the ratio of the distance
aliya0001 [1]

Answer:

250 miles

Step-by-step explanation:

The given distance between the house and the beach is 125 miles.

Let x miles be the distance between the house and the lunch stop.

So, at the time of the lunch stop, he already traveled x miles, the remaining distance is the distance between the lunch stop and the beach.

Let y miles be the remaining distance, so

y=125-x.

Give that the ratio of the distance he has traveled, x, to the distance he still has to travel, y, is 2:3,i.e

x:y=2:3

\Rightarrow \frac x y =\frac 2 3

\Rightarrow \frac {x}{125-x}=\frac 2 3

\Rightarrow 3\times x=2\times(125-x)

\Rightarrow 3\times x=2\times125-2\timesx

\Rightarrow 3 x=250-2x

\Rightarrow 3x-2x=250

\Rightarrow x=250

Hence, the distance traveled by Herman when he stops for lunch is 250 miles.

4 0
3 years ago
X^2 - 2x = 15 how do I solve this quadratic method?<br>I am stuck on it.... please help<br>​
Anarel [89]

Answer:

(x - 5)(x + 3)

Step-by-step explanation:

to solve x² - 2x = 15, we need to get all the terms on one side so we can solve the quadratic equation using factoring. to do this, we subtract 15 from both sides

x² - 2x = 15

- 15         -15

x² - 2x - 15 = 0

now we can factor. we need 2 numbers that when multiplied together give us -15, and when those 2 numbers are added together we get -2

because we have a -15, we can assume that one number must be negative and the other positive, as a negative times a postive is a negative.

we can use 3 and -5 as factors and test it out. we put x in front because we have an x²

(x - 5)(x + 3) < we can FOIL to check to see if this is correct. its not mandatory to check but when you arent sure of the answer you can FOIL it out

FOIL stands for: First, Outside, Inside, and Last terms

F: (x - 5)(x + 3) = x²

O: (x - 5)(x + 3) = -3x

I: (x - 5)(x + 3) = 5x

L: (x - 5)(x + 3) = -15

x² + 3x - 5x - 15 < subtract 3x from 5x

x² - 2x - 15

this checks out, so our answer is (x - 5)(x + 3)

6 0
3 years ago
Read 2 more answers
What is the base 5 representation of the number 465^8
andreev551 [17]

Answer  

Option C : 2214(5)

Solution


The given number is 465 in base 8. To convert this number to base 5,we need to convert this number to base 10, then only we can compute the number in base 5


Step1 : Convert 465 to the base 8 to base 10


4 x 82=256


6 x 81=48


5 x 80=5


Adding 256 + 48+ 5 = 309(10)


Step2 : Convert 309(10) to base 5  

5 | 309  

5 | 61 |4


5 | 12 | 1


5 | 2  | 2


5 | 0  | 2



Therefore Answer = 2214(5 )

4 0
3 years ago
HELP ASAP PLEASE
padilas [110]
I believe the answer is letter D
3 0
3 years ago
Read 2 more answers
3/4 3√128. simplify?<br>kindly<br>​
lisov135 [29]

Answer:  3∛2

<u>Step-by-step explanation:</u>

First, factor 128 .... you need three common factors to bring one on the outside of the radical.

\dfrac{3}{4}\sqrt[3]{128} \\\\\\=\dfrac{3}{4}\sqrt[3]{4\cdot 4\cdot 4\cdot 2} \\\\\\=\dfrac{3}{4}\cdot 4\sqrt[3]{2} \\\\\\=\large\boxed{3\sqrt[3]{2} }

6 0
3 years ago
Read 2 more answers
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