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3 years ago

CAN SOMEONE PLS HELP ME THIS IS 7th GRADE MATH

Mathematics

2 answers:

Ad libitum [116K]3 years ago

8 0

Answer:

Step-by-step explanation:

d= 52 degrees, e=77 degrees, f=180-77-52 degrees, f=51 degrees

schepotkina [342]3 years ago

4 0

Answer:

hmmmmmmmm ill let u know when i search it up online

Step-by-step explanation:

im so gonna fail 7th grade :<

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Please help me answer these!!! Thanks :)

Andrei [34K]

-2-(+7) is the same thing at -2-7 which is -9

$-3 \frac{2}{7} -(- \frac{5}{7} )$ is the same thing as $(-3 \frac{2}{7}) + (\frac{5}{7})$ which is $- \frac{18}{7}$ or $-2 \frac{4}{7}$

Last but not least the last one is the Associative Property based on definition listed below :)
Associative Property:<span> When three or more numbers are added, the sum is the same regardless of the grouping of the addends. For example (2 + 3) + 4 = 2 + (3 + 4)</span>

6 0

4 years ago

Fill in the blank and dropdown menus to form a true statement below.

Pavlova-9 [17]

Answer:

It's polyhedron, not polygon

Because above figure has merely 10 sides.

so the polyhedron above has 10 sides, each of them has 20°.

so total degree in polyhedron is > 180(n-2)

>180(10-2)

> 180×8

> 1440

Step-by-step explanation:

Hope it helps you

5 0

3 years ago

The manager of a large apartment complex knows from experience that 120 units will be occupied if the rent is 450 dollars per mo

Sphinxa [80]

Answer:

To maximize revenue, the manager should charge $525

Step-by-step explanation:

Given.

Rent = $450.

Unit = 120

Yes assume our function to be F(x).

To maximise F(x), the function will be based how much of the available units (x) is less than the initial 120 units with a corresponding increase in revenue dollars of 5x above the initial revenue.

Initial Revenue = 450 * 120 = $54,000

F(x) = (120 - x)(450 + 5x)

Converting this into standard quadratic form;

F(x) = 54000 + 600x - 450x - 5x²

F(x) = 54000 + 150x - 5x²

F(x) = -5x² + 150x + 54000

Using axis of symmetry formula

(x = -b/2a) for a parabola to determine the x coordinate of the function's vertex (maximum point):

F(x) = -5x² + 150x + 54,000

Where a = -5

b = 150

x = -b/2a

x = -150/2(-5)

x = -150/-10

x = 15 units less than 120

Next is to calculate the corresponding value of F(x) .

By Substitution

F(x) = -5(15)² + 150(15) + 54000

F(x) = -1125 + 2250 + 54000

F(x) = 55,125 --- Maximum Revenue

Calculating the optimum monthly rent based upon the maximum revenue dollars divided by by the previously determined number of units (15) less than the initial 120 units:

Monthly Rent = 55,125/(120 - 15)

Monthly Rent = 55,125/105

Monthly Rent = $525

To maximize revenue, the manager should charge $525

5 0

3 years ago

Provide a counterexample to the following statement: division of whole numbers is commutative

Yuri [45]

Answer:

Division is not commutative because 25÷5 does not equal 5÷25

Step-by-step explanation:

5 0

3 years ago

In an obtuse triangle, how many altitudes fall inside and outside the triangle?

mel-nik [20]

6 I think this is correct.

7 0

4 years ago