1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
a_sh-v [17]
3 years ago
13

Imagine having 20 currency notes , consisting of $5 bills , and $10 bills that total $125. Write a system of equations to descri

be the situation.
Mathematics
2 answers:
Maurinko [17]3 years ago
7 0
X-the $5 bills 
y-the $10 bills

x+y=20
5x+10y=120  

It's a system.
raketka [301]3 years ago
3 0
Hi,

Reading the problem you can understand that you have 20 currency notes. So, all the currency notes (5 and 10) summed are 20.

Now, you know that there are some 5 and 10 bills of these, but you don't know how many of these are $5 or $10...you only know that summing all these bills give $125.

Setting a sistem of linear equation would be like this:

i call x the $5 bills and y the $10 bills.

x+y = 20
5x + 10y = 125

The final results are x = 15 and y = 5

Hope it is clear!
You might be interested in
A triangle T is bounded (on three sides) by the lines x = 6, y = 0, and y = 3 2 x. A rectangle of width w is inscribed inside T.
Viktor [21]

Answer:

33.85 units^2

Step-by-step explanation:

you must first draw the triangle on the plane using the equations (see

attached file), you will have a right angle triangle with a height of 192 and a base of 6.

then you calculate the angle with the tangent function = 88.21

Then you use the small triangle to find the value of a (see attached file).

Finally, you propose an equation for X to find one of the sides of the triangle, once you have x squared it, and you already have the area,

i attached procedure

7 0
3 years ago
HELP!!! BRAINLIEST ANSWER!!!!
vfiekz [6]

Answer:

x = 26, y = 9

Step-by-step explanation:

Add the bottom equations and set them equal to 180

8x -28 = 180

8x = 208 divide each by 8

x = 26

Find the bottom right, 3(26) - 11

78 - 11 = 67

The unlabeled top left box is also equal to 67 degrees.

So 2y + 5 = 23

2y = 18

y = 9

7 0
3 years ago
Read 2 more answers
If cos(x) = 0.5, then what is x?
Anestetic [448]

Answer:

=60 the second option.

Step-by-step explanation:

Given the trigonometric ratio, we can find the value of the angle by simply finding the inverse of the given ratio.

If for example Cos ∅= a, then ∅=Cos⁻¹a

If Cos (x)= 0.5, then x= Cos⁻¹ 0.5

Cos⁻1 0.5=60°

The angle whose sine is 0.5 is ∅=60°

5 0
3 years ago
Read 2 more answers
Scientists studying dolphin echolocation simulate the projection of a bottlenose dolphin's clicking sounds using computer
lina2011 [118]

Step-by-step explanation:

The equation of a parabola with focus at (h, k) and the directrix y = p is given by the following formula:

(y - k)^2 = 4 * f * (x - h)

In this case, the focus is at the origin (0, 0) and the directrix is the line y = -1.3, so the equation representing the cross section of the reflector is:

y^2 = 4 * f * x

  = 4 * (-1.3) * x

  = -5.2x

The depth of the reflector is the distance from the vertex to the directrix. In this case, the vertex is at the origin, so the depth is simply the distance from the origin to the line y = -1.3. Since the directrix is a horizontal line, this distance is simply the absolute value of the y-coordinate of the line, which is 1.3 inches. Therefore, the depth of the reflector is approximately 1.3 inches.

4 0
1 year ago
The total weight of 9 bags of potatoes is 36 kilograms each bag weights the same amount what is the weight in grams of each bag
ra1l [238]

Answer:

4000

Step-by-step explanation:

36kg = 36000g

36000g/9 bags = 4000g

5 0
3 years ago
Read 2 more answers
Other questions:
  • On a vacation trip to Canada you realize that the speed limit signs are in km/hour. Unfortunately, your speedometer only reads i
    10·2 answers
  • Figure 1 is dilated to get Figure 2.
    15·2 answers
  • Find the quotient 5 - 7/8 subtracted
    9·1 answer
  • A friend is building a garden with 2 side lengths 11 ft and two or more right angles. What geometric figures could describe how
    6·1 answer
  • 6,300,000,000 = 6.3 x 1,000,000,000
    7·2 answers
  • The perimeter of a rectangle is equal to 163 yard. The width is 8 more than twice the length. Find the length and width.​
    15·1 answer
  • Please help asap!!! Will give brainleist for the right answer
    13·1 answer
  • 1. Simplify the expression<br> 11x + 3x
    15·2 answers
  • Find the area of the rectangle.<br> (8x + 5) yards<br> (8x - 5) yards
    5·1 answer
  • A golfer’s arm rotates 1/2 of a revolution in 1/10 of a second. If the angular displacement is measured in radians, which statem
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!