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jeka94
3 years ago
15

A wallet containing $40 has three times as many $1 notes as $5. Find the number of each kind. (Pls give answer urgently needed w

ith working)
Mathematics
1 answer:
lisov135 [29]3 years ago
8 0
X=one dollar
y=5 dollar

x=3y
1x+5y=40
3y+5y=40
8y=40
divide 8
y=5
x=3y
x=3(5)
x=15

15 one dollars
5 five dollars
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What is the solution to the following system of equations?<br><br> y=6x-11 //////<br> -2x-3y=-7
jok3333 [9.3K]
Y = 6x - 11
-2x - 3y = -7

Let's use substitution:

-2x - 3y = -7
-2x - 3(6x - 11) = -7
-2x - 18x + 33 = -7
-20x + 33 = -7
-20x = -40
x = 2

----

y = 6x - 11
y = 6(2) - 11
y = 12 - 11
y = 1

----

y = 6x - 11  =>  1 ? 6(2) - 11  =>  1 = 12 - 11  <--True
-2x - 3y = -7  =>  -2(2) - 3(1) ? -7  =>  -4 - 3 = -7  <--True

Answer:
x = 2
y = 1

Hope this helps!
6 0
3 years ago
Read 2 more answers
HELP ASAP will give BRAINLIEST
tester [92]

Hey there! I'm happy to help!

The question tells us that m∠JKL is 54. We see from the diagram that this is the combination of the angles m∠JKM and m∠MKL. So, we can combine their values, which are equal to 54 to find x.

13x+1+5x+4=54

We combine like terms

18x+5=54

We subtract 5 from both sides.

18x=49

We divide both sides by 18.

x=2.7222222....

Now, we want to find the measure of m∠MKL. We plug our x value into the value of this angle and evaluate.

5(2.722....)+4=17.61111....... or 17 11/18.

Have a wonderful day and keep on learning! :D

3 0
2 years ago
Draw a square of area 18 square centimetre​
Semenov [28]

Answer:

3\sqrt{2}\\ each side

Step-by-step explanation:

make each side 4.24cm or 3\sqrt{2}\\

5 0
3 years ago
Which equation is graphed in the figure?
kenny6666 [7]

Answer: Option B.


Step-by-step explanation:

1. The equation of the line has the following form:

y=mx+b

Where m is the slope of the line and b is the y-intercept.

2. Therefore, you must solve for y to write the equation in that form:

3y-4x=\frac{7}{2}x+\frac{3}{2}y+6\\\frac{3}{2}y=\frac{15}{2}x+6\\y=\frac{30}{6}y+4\\y=5x+4

3. As you can see, the y-intercept is b=4, therefor, the equation of the option B is the equation graphed in the figure.


4 0
3 years ago
Read 2 more answers
Mr. Moore drove the first half of his journey at an average speed of 96 km/h for 2 hours.
Talja [164]

Answer:

bnb

Step-by-step explanation:

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