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aalyn [17]
4 years ago
8

PLEASE HELP ME! (answer the question and don't just take the points)

Mathematics
1 answer:
Crank4 years ago
5 0
A. 355, it's the smallest amount you need.

b. 71*2*2.5... don't think this is right, I'm so sorry
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At oxnard university, a student id consists of one letter (26 possibilities) followed by eight digits (10 possibilities). (a) ho
Anika [276]

A. We are given that the combination is 1 letter and 8 digits, so the total number of unique combinations would be the product of each possibilities.

Total unique ID’s = 26 * 10 * 10 * 10 * 10 * 10 * 10 * 10 * 10

or can also be written as

Total unique ID’s = 26 * 10^8

Solving:

Total unique ID’s = 2.6 x 10^9

 

B. Let us now calculate the total unique ID’s if there is only 1 letter followed by 3 digits.

Total unique ID’s = 26 * 10^3

Total unique ID’s = 26,000

Since there are 48,000 students and only 26,000 unique ID’s, therefore it is not enough.

<span>NO.</span>

5 0
3 years ago
Write the linear equation -7x 8y=-1 in slope-intercept form
slamgirl [31]
A slope intercept form is, take as an example: y=mx + b, because b is the number where the line intercepts the y axis.

Assuming the space inbetween -7x and 8y is a plus sign.

To get the equation in the right format, one must do the following:

8y=7x-1
y=7/8x-1/8

And theres your answer!

Note: The line intercepts the y axis in -1/8 :)
(If the space isnt a plus, i can answer diffrently in the comments.)
3 0
4 years ago
Eden opened a credit card at a department store with an APR of 19.07% compounded monthly. What is the APY on this credit card?
notsponge [240]

APR = Annual Percentage Rate; APY = Annual Percentage Yield.
This is a tough question!!

To get the APY we use the compounding formula (A = P(1+r/n)^nt) and put $1 in for the principal and see what our final amount is at 19.07% after a year.

A = 1(1+.1907/12)^12

A= 1.0159^12

A= 1.2083  This means that we paid 0.2083 on our dollar after a year which means the APY is 20.83%.




6 0
4 years ago
The chart shows how the Lewis family spends their money. Make a circle graph to display the data.
djyliett [7]
We have the formula: (spending : sum of spending) . 100 = ......
8 0
3 years ago
In an isosceles trapezoid the length of a diagonal is 25 cm and the length of an altitude is 15 cm. Find the area of the trapezo
andreev551 [17]

Answer:

The area of the trapezoid is 525\ cm^{2}

Step-by-step explanation:

we know that

The area of a isosceles trapezoid is equal to the area of two isosceles right triangles plus the area of a rectangle

step 1

<em>Find the area of the  isosceles right triangle</em>

Remember that

In a isosceles right triangle the height is equal to the base of the triangle

we have

h=15\ cm

so

b=15\ cm

The area is equal to

A=\frac{1}{2}(b)(h)

substitute the values

A=\frac{1}{2}(15)(15)=112.5\ cm^{2}

step 2

Find the area of the rectangle

The area of the rectangle is equal to

A=LW

we have

W=15\ cm -----> is the height of the trapezoid

d=25\ cm  -----> the diagonal of the rectangle

Applying the Pythagoras Theorem

25^{2}=L^{2}+15^{2}\\L^{2}=25^{2}-15^{2} \\ L^{2} =400\\L=20\ cm

The area of the rectangle is

A=(20)(15)=300\ cm^{2}

step 3

Find the area of the trapezoid

A=2(112.5\ cm^{2})+300\ cm^{2}=525\ cm^{2}

6 0
4 years ago
Read 2 more answers
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