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3 years ago

Help ill mark brainliest

Mathematics

2 answers:

Ann [662]3 years ago

4 0

Answer:

f(4) = -10

g(2) = 30

Step-by-step explanation:

KiRa [710]3 years ago

3 0

BIDEN 2020 BOYSSSS let’s go >:)

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A florist used 16 flowers to make a bouquet, including 6 lilies.

Novosadov [1.4K]

Answer:

3/8

Step-by-step explanation:

Values we are given :

16 flowers in total
6 lilies

We know that :

Probability of selecting an object from a group of items = Number of objects / Number of items

Therefore,

Probability of selecting a lily = Number of lilies / Number of flowers
P = 6/16
P = 3/8

8 0

2 years ago

A student spent 5/8 of an hour each evening reading a book about whales. If it took the student 10 evenings to finish the book,

Goshia [24]

Answer: 6hours and 25 minutes

5/8 of one hour is 37min and 5seconds
Multiple by the 10 evenings is 375
Divide by 60 (minutes in an hour)

7 0

3 years ago

Ling gave some of her blankets to charity, decreasing her total number of blankets by 9. After she gave the blankets away, she h

alexandr402 [8]

# of blankets at the beginning = b

11 = b - 9

11 + 9 = b

b = 20

6 0

4 years ago

ol McDonald would like to build a pin for his favorite pig horse and cow he needs to enclose a rectangular plot of land into thr

garri49 [273]

The area of the pen is the products of its dimensions

The dimension of the pen is 300 by 120 feet
The maximum area of the pen is 36000 square feet.

Let the dimension of the fence be x by y.

So, we have:

$\mathbf{2x + 5y = 1200}$ --- perimeter

$\mathbf{Area =xy}$ -- area

Subtract 5y from both sides of $\mathbf{2x + 5y = 1200}$

$\mathbf{2x = 1200 - 5y}$

Divide both sides by 2

$\mathbf{x = \frac{1200 - 5y}{2}}$

Substitute $\mathbf{x = \frac{1200 - 5y}{2}}$ in $\mathbf{Area =xy}$

$\mathbf{Area = \frac{1200 - 5y}{2} \times y}$

$\mathbf{Area = \frac{1200y - 5y^2}{2}}$

Split

$\mathbf{Area = 600y - \frac{5}{2}y^2}$

Differentiate

$\mathbf{A' = 600 -5y}$

Set to 0

$\mathbf{600 -5y = 0}$

Add 5y to both sides

$\mathbf{5y = 600}$

Divide both sides by 5

$\mathbf{y = 120}$

Substitute $\mathbf{y = 120}$ in $\mathbf{x = \frac{1200 - 5y}{2}}$

$\mathbf{x = \frac{1200 - 5 \times 120}{2}}$

$\mathbf{x = \frac{1200 - 600}{2}}$

$\mathbf{x = \frac{600}{2}}$

$\mathbf{x = 300}$

Recall that:

$\mathbf{Area =xy}$

So, we have:

$\mathbf{Area = 300 \times 120}$

$\mathbf{Area = 36000}$

Hence, the maximum area of the pen is 36000 square feet.