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Karo-lina-s [1.5K]
2 years ago
11

If four desk lamps cost $120 what is the average cost per lamp?

Mathematics
2 answers:
Nookie1986 [14]2 years ago
8 0
$30 each. Unless that's not the answer you are looking for.
antiseptic1488 [7]2 years ago
8 0
The cost of 1 lamp=x

4x=120$
x=120$/4=30$

Answer:30$
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numerele a, b si c sunt direct proportionale cu 2, 3 si 5. Daca media aritmetica a celor trei numere este egala cu 100, determin
Fynjy0 [20]

Answer:

a = 60

b = 90

c = 150

Step-by-step explanation:

Numerele a, b și c sunt direct proporționale cu 2, 3 și 5.

Unde k este constantă de proporționalitate

a ∝ 2

a = 2k

b ∝ 3

b = 3k

c ∝ 5

c = 5k

Dacă media aritmetică a celor trei numere este egală cu 100, determinați numerele a, b și c

= 2k + 3k + 5k / 3 = 100

= 10k / 3 = 100

Cross Multiply

= 10k = 3 × 100

= 10k = 300

Împărțiți ambele părți la 10

k = 300/10

k = 30

Pentru numărul a

a = 2k

a = 2 × 30

a = 60

Pentru numărul b

b = 3k

b = 3 × 30

b = 90

Pentru numărul c

c = 5k

c = 5 × 30

c = 150

Prin urmare, a = 60, b = 90, c = 150

3 0
3 years ago
Four consecutive odd integers add up to -48. What is the least of these integers?
Semmy [17]

Answer:

-9

Step-by-step explanation:

Four consecutive odd integers be (2x - 3),(2x -1),(2x + 1),(2x + 3)

2x-3 + 2x - 1 +2x+1 + 2x+3 = -48

2x + 2x + 2x +2x - 3 - 1 + 3 + 1 = -48

8x = -48

x = -48/8

x = -6

Least of these integer = 2x + 3 = 2*(-6) + 3 = -12 + 3 = -9

3 0
3 years ago
Help and explain please !!!!!!!!!!!!!!
True [87]
A. Median. That is simply what it is called
5 0
3 years ago
The total mass of 6 jars is 9 kilograms. What is the mass, in grams, of each jar?
Juli2301 [7.4K]

Answer: my guess is 9000 grams

Step-by-step explanation:

so first convert 9 kilograms in to grams.

Then, convert those grams into jars.

3 0
2 years ago
What is “3(2d-1)-2d=4(d-2)+5” ?
trapecia [35]

Answer:

Infinite solutions

Step-by-step explanation:

3(2d-1)-2d=4(d-2)+5 | Given equation

6d - 3 - 2d = 4d - 8 + 5 | Distribute

4d - 3 = 4d - 3 | Combine like-terms

4d = 4d

Infinite solutions, the terms are equal.

5 0
3 years ago
Read 2 more answers
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