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IRINA_888 [86]
3 years ago
6

Supergirl had a gift card for a local movie theater. Each time she went to the movies, the balance remaining on the card decresa

sed by $8.50. What number represents the total change in value on her card after she went to the movies 4 times?
Mathematics
1 answer:
Karolina [17]3 years ago
7 0
It is not possible to answer since we do not know the amount of money the gift card has. what ever the amount is just subtract $34
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Answer:

C. 8

Step-by-step explanation:

still using the equation a^2 = b^2 = c^2

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Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the corre
Alekssandra [29.7K]

In the given figure we can determine the coordinate of point M from the graph, we get:

M=(\frac{d}{2},\frac{c}{2})

We can also determine the coordinates of point N as:

N=(\frac{a+b}{2},\frac{c}{2})

Now, to determine the length of segment MN, we need to subtract the x-coordinate of M from the coordinates of N, we get:

MN=\frac{a+b}{2}-\frac{d}{2}

Subtracting the fractions we get:

MN=\frac{a+b-d}{2}

Now, to obtain the length of AB we need to subtract the x-coordinate of A from the x-coordinate of B.

The coordinates of A are determined from the graph:

A=(0,0)

The coordinates of B are:

B=(a,0)

Therefore, the length of segment AB is:

AB=a

Now we do the same procedure to determine the segment of CD. The coordinates of C are:

C=(b,c)

The coordinates of D are:

D=(d,c)

Therefore, CD is:

CD=b-d

Now, we determine MN as half the sum of the bases. The bases are AB and CD, therefore:

MN=\frac{1}{2}(a+b-d)

Therefore, we have proven that the median of a trapezoid equals half the sum of its bases.

8 0
1 year ago
On the first math test, Keiko answered 19 out of 20 correct. On which test did she get a better grade? Write a ratio in faction
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Hope this helps you

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A water company drills 2 wells to provide additional water for a small community. The cost in dollars to drill and service
Ipatiy [6.2K]

The expression 16y² + 48y in factored form is 16y(y+4) and the GCF of 16 and 48 is 16.

Given that A water company drills 2 wells to provide additional water for a small community. The cost in dollars to drill and service the wells for y years is represented by the expression 16y² + 48y and asked to factorize the equation

Factorization:

A number or other mathematical object is factored (or factorised, see variants in English spelling) or factored by a number of factors, often smaller or simpler things of the same sort.

⇒16y² + 48y=16y(y+4)

G.C.F:

The greatest common factor, which is the product of two or more numbers, is the biggest number (GCF). A natural number is created by dividing them by the biggest number (factor). There are a few factors that both share once all the number's components have been identified. The greatest common factor is the one with the largest number among the common factors. The highest common factor is another name for the GCF (HCF)

The highest common factor of 16 and 48 is 16

Therefore, G.C.F of 16 and 48 is 16      

Therefore,The expression 16y² + 48y in factored form is 16y(y+4) and the GCF of 16 and 48 is 16.

Learn more about Factorization here:

brainly.com/question/24182713

#SPJ9

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