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Y_Kistochka [10]
3 years ago
7

The graph shows the relationship between the total cost and the number of gift cards that Raj bought for raffle prizes.

Mathematics
2 answers:
BabaBlast [244]3 years ago
6 0

<u>The problem is as following:</u>

The graph shows the relationship between the total cost and the number of gift cards that Raj bought for raffle prizes. What would be the cost for 5 of the gift cards? $80, $90, $100 Or $110

===============================================================

<u>Solution</u>:

The points of the figure represents a straight line

The general form of the straight line is  ⇒ y = mx + c

where m is the slope and c is constant

let x ⇒ The number of gifts cards , y ⇒ Total cost (in $)

we will find m and c using the points (1,20) , (2,40)

The slope = m = \frac{y_{2} - y_{1}}{x_{2}-x_{1}} =\frac{40-20}{2-1} =\frac{20}{1}=20

∴ y = 20x + c

Substitute with the point (1,20) ⇒ y = 20 at x = 1

∴ 20 = 20 * 1 + c

∴ 20 = 20 + c

∴ c = 0

∴ The equation of the line ⇒⇒⇒ y = 20x

To find the cost for 5 of the gift cards substitute with x = 5

∴ y = 20 * 5 = 100

So, the cost for 5 of the gift cards = $100

<u>The correct answer is option 3 ⇒⇒⇒ $100</u>

anygoal [31]3 years ago
3 0

Answer:

C:100

Step-by-step explanation:

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son4ous [18]

Figure B is misleading because " vertical scale doesn't start with zero"

Step-by-step explanation:

Given are the two bar graphs to compare the sales of two theatres.

The x-axis has types of movies and y-axis has sales.

We can see that the scale of Figure A on y-axis starts from zero while the scale of figure B starts from 50. The both graphs cannot be compared with this scale.

Hence,

Figure B is misleading because " vertical scale doesn't start with zero"

Keywords: Bar graph, Charts

Learn more about bar graphs at:

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#LearnwithBrainly

3 0
3 years ago
The length of a rectangle is 3 cm more than its breadth. If the perimeter of the
schepotkina [342]

Answer:

breadth = 10 cm

length = 13 cm

Step-by-step explanation:

so,

perimeter = 46cm

2(l+b) = 46cm

or, 2(3+b+b) = 46cm ( because l = 3+b)

or, 2(3+2b) = 46cm

or, 6 + 4b = 46cm

or, 4b = 46cm - 6

or, 4b = 40cm

or, b = 40/4 cm

so, b = 10 cm

now,

l = 3cm + b

l = 3 cm + 10cm

= 13cm

4 0
3 years ago
If 3n + 7 = 25, then find the value of the expression 8n - 3]
daser333 [38]

Answer:

n=6,

SAS,

63

Step-by-step explanation:

3n+7=25

3n=25-7

3n=18

n=18/3

n=6

_______________________________

ΔDEF is congruent to ΔXYZ

DE=XY(side)

<E=<Y (angle)

EF=YZ (side)

by SAS congruence criteria ΔDEF=ΔXYZ

_________________________

(Linear pair)

180°-117°

=63

Answer=63

3 0
3 years ago
Round 834.76 to nearest one
pishuonlain [190]
834.76 to the nearest one is 835.00
4 0
3 years ago
Read 2 more answers
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Tcecarenko [31]

Answer:

D

Step-by-step explanation:

7 * 12 = 84

And 1/4 hours which is 7/4 which is $1.25 more.

So she got 85.25 dollars in total, which is a little less than $90.

8 0
3 years ago
Read 2 more answers
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