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
kvv77 [185]
3 years ago
6

What is 12 2/5 +(-3 1/4) equal to

Mathematics
1 answer:
lesya [120]3 years ago
3 0

Answer:

= 183/20

Step-by-step explanation:

12 2/5 + (-3 1/4)

= 62/5 + (-13/4) <= put mixed numbers in improper fraction form

Set common denominator as 20

= 248/20 - 65/20

= (248-65)/20

= 183/20

You might be interested in
What is the sale price to the nearest cent? $239 television; 10% discount
miv72 [106K]

Answer:

The sale price will be:  $215.10

Step-by-step explanation:

We know that:

Sale price = Regular price × (100% - Discount %)

                 = Regular price × (100% - 10%)

                 = 239 × 90%

                 = 239 × 0.9

                 = 215. 10 $

Therefore, the sale price will be:  $215. 10        

3 0
2 years ago
Brianna has x nickels and y pennies. She has no less than 20 coins worth no more
Bond [772]

Answer:

y \ge 20 - x

y \le 80 -5x

(x,y) = (15,5)

Step-by-step explanation:

Given

Nickels = x

Pennies = y

Amount = \$0.80 maximum

Coins = 20 minimum

Required

Solve graphically

First, we need to determine the inequalities of the system.

For number of coins, we have:

x\ +\ y\ge 20 because the number of coins is not less than 20

For the worth of coins, we have:

0.05x\ +\ 0.01y\ \le0.80 because the worth of coins is not more than 0.80

So, we have the following equations:

x\ +\ y\ge 20

0.05x\ +\ 0.01y\ \le0.80

Make y the subject in both cases:

y \ge 20 - x

0.01y \le 0.80 - 0.05x

Divide through by 0.01

\frac{0.01y}{0.01} \le \frac{0.80}{0.01} -\frac{ 0.05x}{0.01}

y \le \frac{0.80}{0.01} -\frac{ 0.05x}{0.01}

y \le 80 -5x

The resulting inequalities are:

y \ge 20 - x

y \le 80 -5x

The two inequalities are plotted on the graph as shown in the attachment.

y \ge 20 - x --- Blue

y \ge 80 -5x --- Green

Point A on the attachment are possible solutions

At A:

(x,y) = (15,5)

4 0
2 years ago
How do you solve for b and c?
dangina [55]
C:
6*2 = 2.5c
c = 4.8

b:
Cannot be solved until the measure of one other angle in the X is added.
6 0
3 years ago
Here is a sketch of y=x^2+bx+c The curve intersects
atroni [7]

Answer:

y = 18  and  x = -2

Step-by-step explanation:

y = x^2+bx+c   To find the turning point, or vertex, of this parabola, we need to work out the values of the coefficients b and c. We are given two different solutions of the equation. First, (2, 0).  Second, (0, -14). So we have a value (-14) for c. We can substitute that into our first equation to find b. We can now plug in our values for b and c into the equation to get its standard form. To find the vertex, we can convert this equation to vertex form by completing the square. Thus, the vertex is (4.5, –6.25). We can confirm the solution graphically     Plugging in  (2,0) :

y=x2+bx+c  

0=(2)^2+b(2)+c  

y=4+2b+c  

-2b=4+c  

b=-2+2c  

Plugging in  (0,−14) :

y=x2+bx+c  

−14=(0)2+b(0)+c  

−16=0+b+c  

b=16−c  

Now that we have two equations isolated for  b , we can simply use substitution and solve for  c .   y=x2+bx+c  16 + 2 = y   y = 18  and  x = -2

4 0
2 years ago
I NEED HELP I’ve been stuck on this for a while now and I don’t get it I tried answering this question many times but I can’t ca
Monica [59]
Substitute each x and the respecting y to the equation
3 0
3 years ago
Other questions:
  • According to his GPS, it will take Lanny 1 hour to travel 40 miles. Which expression shows how to determine the speed in miles p
    12·1 answer
  • Ellen made pudding for dessert. She collected data on the temperature of the pudding as she was cooking, as graphed below. What
    12·2 answers
  • Find two numbers whose sum is 15 and whose product is as large as possible.
    6·1 answer
  • How do i put -2 + 5 on a number line and what is the answer.
    13·1 answer
  • 4<br>-5a+b=8<br>7a +9b = -32<br>I need to use substitution for this one. Help?​
    12·1 answer
  • 11/15 + -2/5 what is the answer in fraction form
    6·2 answers
  • Find the eqation of the line perpendicular to y=3x-6 that runs through the point (-1, -3)
    7·1 answer
  • Which expression is equivalent to 73 ⋅ 7−5?
    11·2 answers
  • GUESS AND CHECK
    9·1 answer
  • Sketch the curve represented by the parametric equations. Use arrows to indicate the direction of the curve as t increases. Find
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!