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worty [1.4K]
3 years ago
7

-2/5 × -3/7-1/14-3/7× 3/5 step by ​

Mathematics
1 answer:
Sonja [21]3 years ago
3 0

Answer:

-11/70

Step-by-step explanation:

Rearrange it first, we got:

-2/5 x -3/7 -3/5 x 3/7 -1/14

Then:

=2/5 x3/7 -3/5x3/7 -1/14

Next:

(2/5-3/5) x3/7 -1/14

=(-1/5)x3/7 -1/14

=(-3/35)- 1/14

=(-6/70)-5/70

=-11/70

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Evaluate the expression 9x , when x= 4, 7, and 2.5
satela [25.4K]

Step-by-step explanation:

When x = 4,

9x=9×4=36

When x = 7,

9x = 9×7 =63

When x = 2.5

9x = 9×2.5 = 23.5

PLEASE GIVE BRAINLIEST.

5 0
3 years ago
Read 2 more answers
LM=9, NR=16, SR=8. Find the perimeter of △SMP.
Amanda [17]

Answer:

<h2>perimeter of △SMP = 25</h2>

Step-by-step explanation:

The perimeter of the triangle △SMP is the sum of al the sides of the triangle.

Perimeter of △SMP = ||MS|| + ||MP|| + ||SP||

Note that the triangle △LRN, △LSM, △MPN and △SRP are all scalene triangles showing that their sides are different.

Given LM=9, NR=16 and SR=8

NR = NP+PR

Since NP = PR

NR = NP+NP

NR =2NP

NP = NR/2 = 16/2

NP = 8

From △LSM,  NP = PR = <u>MS</u><u> = 8</u>

Also since LM = MN, MN = 9

From △SRP, SR = RP = <u>PS =  9</u>

Also SR =<u> MP = 8</u>

From the equation above, perimeter of △SMP = ||MS|| + ||MP|| + ||SP||

perimeter of △SMP = 8+8+9

perimeter of △SMP = 25

5 0
4 years ago
HELP PLEASE ASAP 55 POINTS I BEG YOU!!!!!!
Alja [10]

Answer:1 b+1T+1 U=5617b+1 T =9062b+7T+5U = 1758

Step-by-step explanation:

3 0
3 years ago
Fill in the blanks to show the steps in solving the inequality -2x + 12&lt;-4
professor190 [17]
-2x + 12 < - 4......subtract 12 from both sides
-2x + 12 - 12 < -4 - 12....simplify
-2x < -16...divide both sides by -2, changing the inequality sign
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x > 8
8 0
3 years ago
Currently, the demand equation for necklaces is Q = 30 – 4P. The current price is $10 per necklace. Is this the best price to ch
barxatty [35]

Answer:

The correct answer is NO. The best price to be charged is $3.75

Step-by-step explanation:

Demand equation is given by Q = 30 - 4P, where Q is the quantity of necklaces demanded and P is the price of the necklace.

⇒ 4P = 30 - Q

⇒ P = \frac{30-Q}{4}

The current price of the necklace $10.

Revenue function is given by R = P × Q = \frac{1}{4} × ( 30Q - Q^{2})

To maximize the revenue function we differentiate the function with respect to Q and equate it to zero.

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⇒ Q = 15.

The second order derivative is negative showing that the value of Q is maximum.

Therefore P at Q = 15 is $3.75.

Thus to maximize revenue the price should be $3.75.

6 0
3 years ago
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