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
Katena32 [7]
3 years ago
9

Eric has a total of 31 coins in his collection.this is seven more than six times the number of quarters in the collection.how ma

ny quarters does he have?
Mathematics
1 answer:
ad-work [718]3 years ago
3 0
Y=6x+7
31=6x+7
-7 both sides
24=6x
Divide by 6 both sides
4=x

The answe is 4
You might be interested in
What is the vertex of the graph of f(x) = x2 + 10x - 9? A) (-5, -34) B) (-5, -9) C) (5, -9) D) (5, 66)
sukhopar [10]

Answer:

A) (-5, -34)

Step-by-step explanation:

f(x) = x^2 + 10x - 9

We complete the square to get the equation in vertex form

Take the coefficient of the x term and divide by 2 then square it.  We add it and then subtract it not to change the value of the equation

f(x) = x^2 + 10x +(10/2)^2 - (10/2)^2 - 9

f(x) = x^2 +10x +25 -25 -9

f(x) = (x^2 +10x +25) -34

The term in parentheses simplified to (x+10/2) ^2

     = (x+5)^2 -34

   = (x - -5)^2 -34

This is in the form (x-h)^2 +k

The vertex is (h,k)  h=-5 and k=-34

(-5,-34)

4 0
3 years ago
Read 2 more answers
Help :( I suck at math
iris [78.8K]

Answer:

D

Step-by-step explanation:

For some side lengths to create a triangle, any two of the side lengths must have an added length together of less than the third leg. Otherwise, the vertices would simply not be able to be connected by the lines. In a), 3+5=8, but since it is not more, the triangle will not be able to be formed (it would basically just be a line.) In B, 7+8< 16. In C, there is the same situation as with the first example (4+15=19). Finally, in the last one, 5+7>12, and all of the side lengths work out. Therefore, the correct answer is D. Hope this helps!

7 0
3 years ago
(PLEASE HELP ME)
Schach [20]
This right answer is D.
because -65 divided by -13 is 5
8 0
3 years ago
Read 2 more answers
Midpoint (10,4) Endpoint (9,-4), find the coordinates of the other endpoint.​
mestny [16]

Answer:

(11, 12)

Step-by-step explanation:

<u>Mid point coordinates:</u>

  • x = (x₁ + x₂)/2
  • y = (y₁ + y₂)/2

<u>Since midpoint and one endpoint given (10, 4) and (9, -4), the other endpoint:</u>

  • x₂ = 2x - x₁ = 2*10 - 9 = 11
  • y₂ = 2y - y₁ = 2*4 - (-4) = 12

<u>So the other endpoint is: </u>(11, 12)

4 0
3 years ago
Explain What Happens To The Volume Of A Sphere When
kati45 [8]
A. The volume is 8 times more
b. The volume is 27 times more
c. The volume is 64 times more
3 0
3 years ago
Other questions:
  • 18 tens 20 ones = hundreds
    13·2 answers
  • Which is greater 27 over 50 or 27%
    5·1 answer
  • A car can travel 60 miles on 3 gallons of gasoline. How far can it travel on 11 gallons of gasoline?
    6·2 answers
  • This is easy but I am not good at word problems plz help
    10·2 answers
  • Find the area of the triangle.<br> A) 78 m2 <br> B) 175 m2 <br> C) 196 m2 <br> D) 350 m2
    6·2 answers
  • Grace and her dad are planning to attend to State Fair. an adult ticket is $15 the price of an adult ticket is half the price of
    15·2 answers
  • 20 subtracted from the product of x and 10
    8·2 answers
  • 2p Determine the value of a such that the system of equations below would have an infinite number of solutions?
    12·1 answer
  • The temperature this morning was −12 °C. This afternoon, the temperature dropped by 6 degrees. What is the new temperature?
    9·1 answer
  • The radius of a semicircle is 2 centimeters. What is the semicircle's area?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!