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ser-zykov [4K]
3 years ago
12

Solve 3[-x + (2 x + 1)] = x - 1.

Mathematics
1 answer:
Viktor [21]3 years ago
4 0
The answer is -1. First you distribute the 3. Then u distribute the 3 again to the parentheses. Then solve it from there

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A traditional postage stamp has a width of 4/5 inches and a length of 9/10. What is the area of a traditional postage stamp?
Illusion [34]
4/5*9/10= 36/50 = 18/25

Just multiply the fractions straight across since area is length*height
5 0
3 years ago
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A rectangular swimming pool is 30 feet wide and 40 feet long. How long is the diagonal of the pool?
larisa [96]

Answer:

50 feet

Step-by-step explanation:

Use the Pythagorean Theorem to find the diagonal (or the hypotenuse)

30²+40²=x²

900+1600=x²

√2500=√x

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Find the square roots of the following numbers. Give the steps correctly.
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Please help. 15 points. Show all work. Thank you.
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3 years ago
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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
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