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
Luden [163]
3 years ago
13

Louisa used a gift card to pay for 3 meals at a vegetarian restaurant. Each meat cost $7. By how much has the value of the gift

card changed after the purchase of the meals?
A.-$10
B.+$10
C.$7
D.-$21
Mathematics
2 answers:
Stells [14]3 years ago
7 0

Answer:

D

Step-by-step explanation:

romanna [79]3 years ago
5 0

Answer:

D.-$21

Step-by-step explanation:

You might be interested in
Write the equation of a line passing through (6,-2) and perpendicular to -2x + 3y= -6
____ [38]
Perpendicular lines refers to a pair of straight lines that intercept each other. The slopes of this lines are opposite reciprocal, meaning that it's multiplication is -1.
On this case they give you the equation of a line and a point, and is asked to find the equation of a line that is perpendicular to the given one, and that passes through this point.


-2x+3y=-6                 Add 2x in both sides
3y=2x-6                    Divide by 3 in both sides to isolate y
y=2/3x-6/3


The slope of the given line is 2/3, which means that the slope of a line perpendicular to this one, needs to be -3/2. Now you need to find the value of b or the y-intercept by substituting the given point into the formula y=mx+b, where letter m represents the slope.

y=mx+b                 Substitute the given point and the previous slope found
-2=(-3/2)(6)+b       Combine like terms
-2=-9+b                 Add 9 in both sides to isolate b
7=b

The equation that represents the line perpendicular to -2x+3y=-6 and that passes through the point (6,-2), is y=-3/2x+7.


4 0
3 years ago
A blood bank needs 15 people to help with a blood drive. 20 people have volunteered. Find how many different groups of 15 can be
Alexxx [7]

Answer:

15,504 different groups

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Solve the triangles below
nataly862011 [7]
I guess you want the missing angle.
The missing angle is 83

4 0
3 years ago
Which equation is an equation of a circle with radius of 10 cm and center at (-3, 6)?
Musya8 [376]
The equation for a circle is 
(x-h)^2 + (y-k)^2 = r^2
(-3,6)
-3 is h 
6 is k 

(x+3)^2 + (y-6)^2 = 10^2
10^2 = 100 

(x+3)^2 + (y-6)^2 =100
The answer is B!
7 0
3 years ago
Can u help me. i dont know the 2 answers
olchik [2.2K]

Answer:

You have its E because if it's a A percentage you have to turn the inter despara point

3 0
3 years ago
Other questions:
  • Write these numbers in order 3.01 13.0 0.31 1.30 3.1
    7·2 answers
  • Factor 2x2 − 24x + 72.
    6·1 answer
  • (6) (Bonus question: worth 10 points. Total points for assignment not to exceed 100.) Use an iterated integral to compute the vo
    7·1 answer
  • What is 15.47 rounded to the nearest whole number?
    10·2 answers
  • Tom and jasper have the same percentage of blue marbles in their bags of marbles tom has 5 blue marbles and 20 total marbles jas
    14·1 answer
  • the ratio of players to fans is 4:20. The ratio of the number of Yankee fans to Red Sox fans is 5:4. There are 200 Yankee fans.
    13·1 answer
  • C(x)=x^2+6x+14 find vertex form
    15·1 answer
  • Write an equation in slope-intercept form of the line that passes through (-1,4) and (0,2).
    11·2 answers
  • Please help and explain :)
    9·1 answer
  • PLEASE GIVE ME ANSWERS
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!