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Pepsi [2]
3 years ago
15

Solve 5[8-(9x-7)]+6x=0

Mathematics
1 answer:
trapecia [35]3 years ago
4 0
<span>5[8 - (9x - 7)] + 6x = 0

5[8 -9x + 7] + 6x = 0

5(15 -9x) + 6x = 0

75 - 45x + 6x = 0

-39x = -75

39x = 75

x = </span>\frac{75}{39} = 1.923076923076923 ≈ 1.92
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Carpeting costs $9.99 a yard. If Jam buys 17.4 yards, how much will it cost her ?
guapka [62]
For this question you would have to multiply the cost ( $9.99 ) by how many yards are being bought (17.4) this is fairly simple , whip out your calculator . The answer is $173.83
4 0
3 years ago
Trei copii au impreuna 45 de lei .
Ainat [17]

Answer:

Primul copil are 6 lei, al doilea are 12 lei, al treilea are 27 de lei.

Step-by-step explanation:

Lăsați suma primului copil să fie x.

Lăsați suma al doilea copil să fie y.

Lăsați suma al treilea copil să fie z.

Trei dintre ei au 45 de lei în total.

Aceasta înseamnă că:

x + y + z = 45 ________(1)

Al doilea are de două ori valoarea primului:

y = 2x

Al treilea are cu 15 lei mai mult decât al doilea:

z = 15 + y

=> z = 15 + 2x

Puneți valoarea y și z în (1):

x + 2x + 15 + 2x = 45

5x = 45 - 15 = 30

x = 30 / 5 = 6 lei

=> y = 2 * 6 = 12 lei

=> z = 15 + 12 = 27 lei

Primul copil are 6 lei, al doilea are 12 lei, al treilea are 27 de lei.

7 0
3 years ago
Akiko has a mass of 55kg how much does Akiko weight? Akiko climbs a flight of six steps each 20cm high how much work does she do
Masteriza [31]
Work= forcexdistance
force=55x10(or 9.8 depending on which gravitational field strength you use)
force= 550N
work = 550x0.2
work= 110J
six steps=110x6=660J
3 0
3 years ago
It is known that 11% of the seniors in a large high school enter military service upon graduation. If a group of 10 seniors are
GaryK [48]

Answer:

2.2%

Step-by-step explanation:

I don't know if this right but it would be 2/10 and multiply htat by 0.11 (representing the 11%) and you would get 0.022 or 2.2%

6 0
3 years ago
Find the value of L. Perimeter = 22. Width is 3. So what is L? On a rectangular
yanalaym [24]
Perimeter of rectangle =2 X( L + w)
width=3
perimeter=22
length =?

2(L+3) =22
=>2L+6 =22
=>2L = 22-6
=>2L =16
=>L = 16/2
=>L=8 ..

Hope it helps !!!
8 0
3 years ago
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