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wlad13 [49]
2 years ago
12

Bernie is making monthly payments of $300 for a computer coding course that costs $2,500. He doesn’t need to pay any interest on

the cost of the course. He started with $200 in his bank account. He plans to add $100 to his savings account every month. How many months will it take Bernie to pay off the total cost of the course using his savings?
Mathematics
1 answer:
kodGreya [7K]2 years ago
4 0
Hi I euteuwiwuwywwiiddgehdjdjdbd wanna was the way to do the best of you and you can be better at what you do you wanna trust
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ABCD is a rectangle and A and B are the points (4,2) and (2,8) respectively. Given that the equation of AC is y=x-2, find a) Equ
Rudik [331]

A(4,2), B(2,8)

AC: y=x-2

Point point form for a line through (a,b) and (c,d) is (c-a)(y-b)=(d-b)(x-a)

AB is  (2 - 4)(y - 2) = (8-2)(x-4)

-2(y - 2)=6(x-4)

y - 2 = -3(x-4)

y = -3x + 14

BC is perpendicular through B, so slope 1/3 and we calculate the constant as y-(1/3)x:

y = (1/3) x  + (8 - (1/3)(2) ) = (1/3) x + 22/3

a)Answer:  BC is  y =  (1/3) x + 22/3

C is the meet of AC and BC,

x - 2 = (1/3) x + 22/3

3x - 6 = x + 22

2x = 28

x = 14

y = x-2 = 12

Check: y = (1/3)x + 22/3 = (14+22)/3 = 36/3 = 12  good

C(14,12)

The remaining corner is D.   We have A-B=D-C or

D = A+C-B+C = (4,2)+(14,12)-(2,8) = (16, 6)

b)Answer: B(2,8) [given, but asked for]  C(14,12), D(16,6)

8 0
2 years ago
Naomi's fish is 40 millimeters long.her guinea pig is 25 centimeters long. How much longer is her guinea pig than her fish
snow_lady [41]

Answer:

The guinea pig is 210 mm longer than Naomi's fish

or

The guinea pig is 21 cm longer than Naomi's fish

Step-by-step explanation:

Remember that

1 cm=10 mm

<u><em>Convert cm to mm</em></u>

guinea pig ------> 25 cm=25*10=250 mm

Subtract the length of Naomi's fish from the length of her guinea pig

so

250-40=210 mm

<u><em>Convert to cm</em></u>

210 mm=210/10=21 cm

7 0
2 years ago
A university is applying classification methods in order to identify alumni who may be interested in donating money. The univers
gtnhenbr [62]

Answer:

Accuracy = 0.81

Sensitivity = 0.93

Specificity = 0.81

Precision = 0.047

Step-by-step explanation:

Given the confusion matrix :

Actual_______ Donation___ No Donation

Donation______ 268 (TP) _______ 20 (FN)

No Donation ___5375 (FP) _____23439 (TN)

Accuracy is calculated as :

(TP + TN) / (TP+TN+FP+FN)

(268 + 23439) / (268 + 23439 + 5375 + 20)

ACCURACY = (23707 / 29102) = 0.81

Sensitivity (True positive rate) :

TP ÷ (TP + FN)

268 ÷ (268 + 20)

268 ÷ 288 = 0.93

Specificity (True Negative rate) :

TN ÷ (TN + FP)

23439 ÷ (23439 + 5375)

23439 ÷ 28814

= 0.81

Precision :

TP ÷ (TP + FP)

268 ÷ (268 + 5375)

268 ÷ 5643

= 0.047

4 0
2 years ago
An airline gathers data on late departures and early arrivals over a month. It finds that the probability of a late departure is
Slav-nsk [51]

Answer:

answer is C (0.12+0.27-0.12)

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Determine the rate of change for the equation.<br> 6y = 8x - 40
natulia [17]
The answer is 4/3 thats the rate of change. up 3 over 4
4 0
2 years ago
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