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NikAS [45]
3 years ago
6

Amelia is going to buy some cards for her friends.Each card costs $3.She finds a coupon for $2 off the entire purchase.Write an

equation that shows the number of cards purchased,x, and the total cost,y.
Mathematics
1 answer:
dalvyx [7]3 years ago
7 0

y = ( 3 * x ) - 2.

This is because the card costs for 3 $ and should be multiplied by the number of total cards she buys in that particular day. So 3 * x.

Now as she has got a 2$ off coupon, whatever the total is she gets 2 dollars off on that price. So we will subtract 2 at that time. FInally all this summed up would be equal to y.

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Can someone please help?
Fofino [41]
<h2>Your Answer should be:</h2>

<h2>134. </h2><h2></h2>

134

-

120

would equal:

14.

5 0
3 years ago
Read 2 more answers
F ind the volume under the paraboloid z=9(x2+y2) above the triangle on xy-plane enclosed by the lines x=0, y=2, y=x
olga nikolaevna [1]

Answer:

The answer is 48 units³

Step-by-step explanation:

If we simply draw out the region on the x-y plane enclosed between these lines we realize that,if we evaluate the integral the limits all in all cannot be constants since one side of the triangular region is slanted whose equation is given by y=x. So the one of the limit of one of the integrals in the double integral we need to evaluate must be a variable. We choose x part of the integral to have a variable limit, we could well have chosen y's limits as non constant, but it wouldn't make any difference. So the double integral we need to evaluate is given by,

V=\int\limits^2_0 {} \, \int\limits^{x=y}_0 {z} \, dx dy\\V=\int\limits^2_0 {} \, \int\limits^{x=y}_0 {9(x^{2}+y^{2})} \, dx dy

Please note that the order of integration is very important here.We cannot evaluate an integral with variable limit last, we have to evaluate it first.after performing the elementary x integral we get,

V=9\int\limits^2_0 {4y^{3}/3} \, dy

After performing the elementary y integral we obtain the desired volume as below,

V= 48 units^{3}

4 0
3 years ago
There are 150 students in band and 90 students in chorus. 1/2 of band members and 4/5 of chorus helped in charity concert. How m
julia-pushkina [17]

Answer:

3

Step-by-step explanation:

3 0
3 years ago
In ΔGHI, the measure of ∠I=90°, the measure of ∠G=46°, and IG = 87 feet. Find the length of GH to the nearest tenth of a foot.
sergij07 [2.7K]

Answer:

See attached

I got an answer of 125.2411251548

or to the nearest tenth 125.2

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Find the slope of the line. y = 5/3x + 4
ioda

Answer:

slope= 5/3

Step-by-step explanation:

y=mx+b

slope=m

your welcome

7 0
3 years ago
Read 2 more answers
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