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kifflom [539]
3 years ago
13

Perform the indicated operation 1. (12 + 3) - 7 = N

Mathematics
1 answer:
lubasha [3.4K]3 years ago
8 0

Answer:

N = 8

Step-by-step explanation:

(12 + 3) - 7 = N

=> N = (12 + 3) - 7

=> N = 15 - 7

=> N = 8

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PLSS HELPP DUE IN 20 MIN. I NEED SOME STEP BY STEP TOO.
Veseljchak [2.6K]

The length of GH is 15.

<h3>How to calculate the length?</h3>

GH = IG

GH = 5x - 10

IG = 3x

5x - 10 = 3x

5x - 3x = 10

2x = 10

x = 10/2 = 5

GH = 5x - 10

= 5 * 5 - 10 = 25 - 10

GH = 15

<ABD = < DBC

<ABD = 10y°

<DBC = (8y + 4)°

10y° = (8y + 4)°

10y = 8y + 4

10y - 8y = 4

2y = 4

y = 4/2 = 2

The value of y is 2

<DBE = <DBC + <CBE

<DBC = 10y°

<CBE = <DBC = 10y°

y = 2

<DBC = <CBE = 10y° = 10*2° = 20°

<DBE = 20° + 20° = 40°

Learn more about angles on:

brainly.com/question/25716982

#SPJ1

8 0
2 years ago
in a town, 11 000 people out of the total population of 50 000 are aged under 18. What percentage of the population is aged unde
Katen [24]

Answer:

22%

Step-by-step explanation:

1- 11000/50000 = 0.22

2- 0.22 x 100 = 22%

.. ..

8 0
3 years ago
A company distributes college logo sweatshirts and sells them for $50 each. The total cost function is linear, and the total cos
mart [117]

Answer:

The total revenue equation is TR=50Q

The total cost equation TC=2304+14Q

Equilibrium quantity is 64

Step-by-step explanation:

The total cost function can be written TC=a+bQ, where TC is the total cost ,a fixed cost ,b is the variable cost per unit and Q the quantity produced

Revenue function can be given TR=P*Q, where TR is total revenue,P is the price per unit and Q quantity sold

since P is $50

TR=50P

when TC=$3564,

3564=a+90Q equation 1

when TC=$5944

5944=a+260bequation 2

Solving simultaneously,we subtract equation 1 from 2

5944=a+260b

3564=a+90b

2380=170b

b=2380/170

b=$14

We substitute for b in any of the equations

3564=a+(14*90)

3564=a+1260

a=3564-1260

a=2304

Hence the total cost equation is

TC=2304+14Q

At equilibrium TC =TR

50P=2304+14Q

50P-14Q=2304

36Q=2304

Q=64

5 0
3 years ago
Find the value of the polynomial 3x<br> 3 – 4x<br> 2+ 7x + 5, when x = 3 and also when<br> x = –3.
babymother [125]

Answer:

71

-133

Step-by-step explanation:

Given the polynomial :

3x³– 4x² + 7x + 5, when x = 3 and also when

x = –3.

Put x = 3

3(3)³– 4(3)² + 7(3) + 5

3(27) - 4(9) + 21 + 5

81 - 36 + 21 + 5

= 71

Put x = - 3

3(-3)³– 4(-3)² + 7(-3) + 5

3(-27) - 4(9) - 21 + 5

-81 - 36 - 21 + 5

= - 133

4 0
3 years ago
Please someone help me...need answer but also need understanding if you can PLEASEE
alexdok [17]
20 cups of 10 oz each it's 200 oz
1 gallon it's 4(32)=128 oz
2 gallons is 256 oz. she will need to buy two gallons
7 0
3 years ago
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