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3 years ago

Work it out please need the answer asap

Mathematics

1 answer:

shusha [124]3 years ago

4 0

Answer:

7986 m^2

Step-by-step explanation:

This is a trapzoid, meaing the formula for area is the sum of the two bases over 2, mutiplied by 2

formula: (B1 + B2/2)h

B1: 140

B2: 102

H: 66

Plug in the information,

(140 + 102/2) 66, simplfy the formula now or evalute.

(242/2) 66, which will be 121 times 66

Mulitply to to get the area, which is 7986

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Mr. Shamir employs two part-time typists, Inna and Jim, for his typing needs. Inna charges $15 an hour and can type 6 pages an h

coldgirl [10]

Answer:

The minimum cost would be 480$ when Inna works for 8 hours and Jim works for 20 hours.

Step-by-step explanation:

We are given the following information in the question:

Charges for 1 hour for Inna = $15

Number of pages typed by Inna in 1 hour = 6

Charges for 1 hour for Jim = $18

Number of pages typed by Jim in 1 hour = 8

Let x be the number of hours Inna work and let y be the number of hours Jim work.

Total cost = $15x + 18y$

We have to minimize this cost.

Then, we can write the following inequalities:

$6x + 8y \geq 208\\x \geq 8\\y \geq 8\\$

The corner points as evaluated from graph are: (8,20) and (24,8)

C(8,20) = 480$

C(24,8) = 504$

Hence, the minimum cost would be 480$ when Inna works for 8 hours and Jim works for 20 hours.

The attached image shows the graph.

3 0

3 years ago

Jessica drove 936 miles in 13 hours. At the same rate, how long would it take her to drive 648 miles?

Natasha2012 [34]

Answer:

9 hours

Step-by-step explanation:

936/13 = 72

72 miles per hour

648/72 = 9

3 0

4 years ago

Read 2 more answers

Factor the expression completely over the complex numbers.<br><br> y^4+12y^2+36

Brums [2.3K]

Y⁴ + 12y² + 36
Now factorize the expression
y⁴ + 6y² + 6y² + 36
= y²(y² + 6) + 6(y² + 6)
= (y² + 6) (y² + 6)
<span>Now 6 is not the perfect square and according to rule, binomial can not be factored as the difference of two perfect squares.
</span>so multiply both.
(y² + 6)² is the answer.

7 0

3 years ago

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Can the sum of two negative numbers ever be positive?

N76 [4]

No
two negatives equal positive, and one negative and one positive is i think negative

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3 years ago

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The function f(h)=8.5h+320 models the amount of money Amy has in her savings after each hour of work.

Ksenya-84 [330]

Answer:

a) h: Number of hours

b) Slope of function

c) y-intercept

Step-by-step explanation:

We are given the following in the question:

$f(h)=8.5h+320$

The above function tells us about amount of money Amy has in her savings after each hour of work.

a) value of "h"

The above function tells us about the money saved by Amy after each hour of work.

Thus, h here stands foe the number of hours.

b) meaning of the coefficient h

Comparing the given function to a linear function:

$f(h) = mh + c$

Thus, coefficient of h is the slope of the function and tells the change in amount of money saved by Amy per unit hour or it tells the change in amount of money when there is a unit increase in hour.

c) meaning of constant

The constant is the y-intercept and tells the amount of money saved by Amy after she have worked for zero hours.

3 0

3 years ago