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alexandr402 [8]
3 years ago
13

Need help with thissss!!

Mathematics
1 answer:
mario62 [17]3 years ago
4 0

Answer:

f(5) = 38

Step-by-step explanation:

f(a) = 7(a + 1) - 4

f(5) = 7(5 + 1) - 4

f(5) = 7(6) - 4

f(5) = 42 - 4

f(5) = 38

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armer Ed has 2500 meters of​ fencing, and wants to enclose a rectangular plot that borders on a river. If Farmer Ed does not fen
Vinil7 [7]

Answer:

781250 Square Meters

Step-by-step explanation:

Let the dimensions of the rectangular plot be x and y

Farmer Ed wants to enclose three sides of a rectangular plot with a fencing of 2500 meters.

Therefore: Perimeter, P=x+2y=2500

We want to find the largest area that can be enclosed.

Area of the plot, A(x,y)=xy

Substitute x=2500-2y

A(y)=(2500-2y)y

A(y)=2500y-2y^2

To maximize A, we first find its derivative

A'(y)=2500-4y\\$Setting A'=0\\2500-4y=0\\2500=4y\\y=625 meters\\Recall: x=2500-2y\\x=2500-2(625)=1250meters

The largest area that can be enclosed(at x=1250m,y=625m) is:

1250 X 625

=781250 Square Meters

7 0
3 years ago
If the merchandise shop sells 840 t-shirts and 360 hoodies.
Olegator [25]

T-shirts: hoodies in it's lowest form.

Divide 840 with 360

840:360 = 840/360 = 7/3

7/3 is your simpliest form.

hope this helps

4 0
3 years ago
Read 2 more answers
Ernest bought t T-shirts. The shirts came in 6 packages. Write an expression that shows how many T-shirts were in each package.
Kisachek [45]

Answer:

t / 6 = # of shirts in each package.

Step-by-step explanation:

total amount of shirts / total packages = # of shirts in each package

3 0
3 years ago
PLS HELP I dont know whether to use 6, 10, or 16 as a side length​
elixir [45]

Answer:

d = 19

Step-by-step explanation:

First, you need to find the length of the diagonal of the rectangular base of the prism. It's the dashed segment on the base of the prism.

The base of the prism is a rectangle with sides 10 and 6. We can use the Pythagorean theorem to find the diagonal.

10^2 + 6^2 = x^2

100 + 36 = x^2

x^2 = 136

x = sqrt(136)

The dashed diagonal of the rectangular base has length sqrt(136).

Now you use the dashed diagonal and the vertical side measuring 15 as the legs of another right triangle. The diagonal labeled d is the hypotenuse of this triangle. We use the Pythagorean theorem again.

15^2 + (sqrt(136))^2 = d^2

225 + 136 = d^2

d^2 = 361

d = 19

6 0
3 years ago
The length of a garden is 125% of its width. If the width of the garden is 8 meters, what is the area of the garden?
katrin [286]
To find 125% of 8, it is easiest to first find 25% of 8 then multiply it by 5 since 125% is 5 times 25%. 
To find 25% of 8, divide it by 4. 
8 / 4 = 2 
Multiply 2 by 5. 
2 x 5 = 10 
That means that the length of the garden is 10. 
To find the area of the garden, multiply the length by the width. 
10 x 8 = 80 
The area of the garden is 80 m². 
Hope this helps!
4 0
3 years ago
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