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
topjm [15]
3 years ago
14

Deijah gave Isaiah $6.25 in nickels and quarters. If 12 coins were quarters, how many coins were nickels? Which equation models

this problem?
A) 0.25•12+0.05•n=6.25

B) 0.05n+625=0.25•12

C)25+5n=6.25

D) 6.25+0.05=12•0.25
Mathematics
1 answer:
dem82 [27]3 years ago
4 0
Deijah has $6.25. 

Now, this 6.25 is comprised of 0.05s and 0.25s. 
We know that there are 12 0.25s.

We now want to know how many remaining 0.05s there are.

Again, we know that the number of 0.05s he has, which is 12, multiplied by 0.05, plus the number of 0.25s he has, multiplied by 0.25, equals 6.25.

Thus, the answer is A, 0.25 x 12 + 0.05 x n = 6.25.
You might be interested in
Suppose f(x)=x^3 find the graph of f(x+3)
hoa [83]

Replace x with x+3:

f(x+3) = (x+3)²

which is x² translated 3 units left

7 0
3 years ago
Complete the work to find the dimensions of the rectangle. x(x – 3) = 10 x2 – 3x = 10 x2 – 3x – 10 = 10 – 10 (x + 2)(x – 5) = 0
Norma-Jean [14]

Answer:

Length =5

Width = 2

Step-by-step explanation:

Given

Length =x

Width = x -3

Area = 10

x(x-3) =10

See comment for missing part of the question

Required

Complete the expression to determine the dimension of a rectangle

We have:

x(x-3) =10

Open bracket

x^2 -3x = 10

Equate to 0

x^2 -3x - 10 =0

Expand

x^2 + 2x - 5x - 10 = 0

Factorize

x(x + 2) - 5(x + 2) = 0

Factor out x + 2

(x  - 5)(x + 2) = 0

Solve for x

x - 5 = 0 or x + 2 = 0

x = 5 or x = -2

The value of x cannot be negative

So:

x  = 5

Recall that:

Length = x

Width = x - 3

So:

Length =5

Width = 2 ---- i.e. 5 - 3

6 0
2 years ago
Please help! Dont get it wrong pls
Vaselesa [24]

Answer:

5.4 > x > 2.8

Step-by-step explanation:

Sum of two sides is always greater than the third side

Case1 :

4.1 + 1.3 > x

5.4 > x

Case2:

4.1 + x > 1.3 or 1.3 + x > 4.1

x > 1.3 - 4.1 or x > 4.1 - 1.3

x > - 2.8 or x > 2.8

Note that it is obvious x is not -ve so neglect -2.8. x > 2.8

Hence,

5.4 > x > 2.8

5 0
3 years ago
Read 2 more answers
A triangular playground has angles with measures in ratio 8: 3: 9 what is the measure of the smallest angle
maria [59]
8x + 3× + 9x = 180

20x = 180
x = 180/20
x = 9

The smallest angle is: 3×9 = 27 degrees

Note: 180 degrees is the sum of angles in a triangle
7 0
3 years ago
Read 2 more answers
Which numbers below belong to the solution set of the equation 16x=224
Taya2010 [7]

x would equal 14 hope this helps

5 0
3 years ago
Other questions:
  • At a school football game, in the stands there were 20 teachers. 8 of them were math teachers, 2 were social studies teachers, a
    13·1 answer
  • Explain whyyy????????
    9·2 answers
  • Jen picked three fourth in half an hour if she keeps the same rate how many will she pick in 2 hours
    8·1 answer
  • Tell whether the sequence is arithmetic if it is identify the common difference -7,-3,1,5
    7·1 answer
  • Michael rented a truck for one day. there was a base fee of $19.95 , and there was an additional charge of 96 cents for each mil
    9·1 answer
  • Help on my geometry plzzzz
    12·1 answer
  • Please answer the question from the attachment.
    13·1 answer
  • write the equation of a line that is parallel to y= 1/2x -4 and that passes through the point (9, -6)​
    15·1 answer
  • Jeff, bill and Bernard are the three wealthiest people in the word. They share 80billion in the ratio 4:3:1 how much does bill g
    7·1 answer
  • (x+y)^2 expressions that are equivalent
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!