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Stels [109]
2 years ago
5

Owen receives $10 and puts it into his savings account. He adds $0.50 to the account each day for a number of days, d, after tha

t. He writes the expression 10+0.5(d−1) to find the amount of money in his account after d days. Which statement about his expression is true? 1.It is the product of the initial amount and the additional amount after d days. 2.It is the sum of the initial amount and the number of days, d. 3.It is the difference between the initial amount and the additional amount after d days. 4.It is the sum of the initial amount and the additional amount after d days.
Mathematics
1 answer:
AlladinOne [14]2 years ago
7 0

Answer:

4. It is the sum of the initial amount and the additional amount after d days.

Step-by-step explanation:

since he receives $10 in the beginning and also after d number of days in regard to the fact that he adds $0.50 each day , both need to be added to get the total after a certain time period

hence they need to add the initial amount and the additional amount after d days

<h2 /><h2>the option that has a similar answer is : </h2>

4. It is the sum of the initial amount and the additional amount after d days.

the ANSWER is : 4

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In an area of the Midwest, records were kept on the relationship between the rainfall (in inches) and the yield of wheat (bushel
Liula [17]

Answer:

Option A is correct.

y = 35.4 bushels per acre when rainfall = 7.1 inches

Step-by-step explanation:

An image of the steps to obtain the equation that relates x to y is attached to this answer.

n = number of variables = 9

μₓ = mean of variable x (rainfall in inches)

μᵧ = mean of variable y (yield in bushels per acre)

σₓ = standard deviation of variable x (rainfall in inches)

σᵧ = standard deviation of variable y (yield in bushels per acre)

y = 4.379x + 4.268

when x = 7.1

y = 4.379(7.1) + 4.268 = 35.3589 = 35.4 bushels per acre.

7 0
2 years ago
A company manufactures two products X and Y. Each product has to be processed in three departments: welding, assembly and painti
Tems11 [23]

Answer:

100x+120y = z

z= $ 63000

Step-by-step explanation:

Product               Welding          Assembly       Painting                Cont. to profit

X                              2x hours            3x hours          1xhour         =        $100x

Y                              3y hours            2y hours           1y hour        =       $120y

<u>                                                                                                 </u>

Total hours          1500 hours        1500 hours     550 hours

available

Let X represent product X

Let Y represent Product Y

2x + 3y = 1500

x + y = 550

y= 550-x

2x + 3(550-x) = 1500

2x + 1650- 3x = 1500

150 = x

y = 550-150

y = 400

Objective Function Z = 100x + 120y

Z = 100(150) + 120( 400)

Z = 15000+48000

Z = $63000

7 0
2 years ago
A bicyclist travels at a constant speed of 12 miles per hour for a total of 45 minutes. Use set notations for the domain and ran
Mama L [17]

A bicyclist travels at a constant speed of 12 miles per hour for a total of 45 minutes

Domain x is number of hours

Range y is distance traveled

speed = 12 miles per hour

time = 45 minutes = \frac{45}{60} = 0.75 hours

We know distance formula

Distance = speed * time

Distance = 12 * 0.75= 9 miles

Number of hours x is 0 to 0.75 hours

So domain is { x | 0}

Distance is 0 to 9 miles

So range is { x | 0}

5 0
2 years ago
An elevator weighing 15,000 newtons is raised one story in 50 seconds. If the distance between stories is 3.0 meters, how much p
Pavel [41]
Power
= Work done  /  Time
= 15000 N * 3 m / 50 s
= 45000/50  N-m/s
= 900 W

It may sound like an extremely low value, but 3.0 / 50 s is also a very slow speed.

8 0
2 years ago
Read 2 more answers
What single percentage change is equivalent to a 13% decrease followed by a 19% decrease?​
Mrac [35]
Answer: 70.47%

100% - 13% = 87%

19% of 87% = 16.53%

remaining percent
= 87% - 16.53%
=70.47%
6 0
1 year ago
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