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BabaBlast [244]
4 years ago
8

-4 (5y + 5) = -120 y =

Mathematics
2 answers:
Sedbober [7]4 years ago
6 0

-4 (5y + 5) = -120

multiply the bracket by -4

(-4)(5y)=-20y

(-4)(5)=-20

-20y-20=-120

move -20 to +20

-20y-20+20=-120+20

-20y=-120+20

-20y=-100

divide both sides by -20 to get y by itself

-20y/-20=-100/-20

Answer: y=5

Serga [27]4 years ago
6 0

Answer:

Step-by-step explanation:

-4(5y + 5) = -120  

-4*5 y = -20 y

-4*5 = 20

-20 y + 20 = -120

         -20      -20

______________

-20 y             -100

-20 y               -20

y=50

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Citrus2011 [14]

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None of the above option is correct

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6 0
3 years ago
Vasudevan invested rupees 60000 at an interest rate of 12% per annum compounded half yearly what amount would he get after 1 yea
Ganezh [65]

Answer:

Given that, Vasudevan invested ₹ 60,000

For Compound Interest (C.I.)

A = P[1 + (r/100)]n

P = ₹ 60,000

n = 6 months and 1 year

R = 12% p.a. compounded half-yearly

where , A = Amount, P = Principal, n = Time period and R = Rate percent

(i) For easy calculation of compound interest, we will put Interest Rate as 6% half-yearly and n = 1.

Compound Interest to be paid for 6 months

A = P[1 + (r/100)]n

A = 60000[1 + (6/100)]1

A = 60000[(100/100) + (6/100)]

A = 60000 × (106/100)

A = 60000 × 1.06

A = ₹ 63600

(ii) Compound Interest to be paid for 12 months (1 year) compounded half yearly.

So, assume n = 2, r = 6%

A = P[1 + (r/100)]n

A = 60000[1 + (6/100)]2

A = 60000[(100/100) + (6/100)]2

A = 60000 × (106/100) × (106/100)

A = 60000 × (11236/10000)

A = 60000 × 1.1236

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4 0
3 years ago
27. The diameter of a music CD is 12 centimeters. Find the circumference
atroni [7]
Diameter is 2 times the radius. Radius is 6.
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8 0
3 years ago
Anika buys a pair of shin guards for $8.58 and serveral pairs of soccer socks for $4.29 per pair. If she spends 25.74 before tax
Kryger [21]

Answer: 4 pairs of socks

Step-by-step explanation:

According to the described situation, Anika spends \$25.74 in 1 pair of shin guards for $8.58 and x pairs of socks for \$4.29 each pair.

So, we can express this in the following equation:

\$25.74=$8.58+\$4.29 x

Isolating x we will find the pairs of socks:

\$25.74-$8.58=\$4.29 x

x=\frac{\$17.16}{\$4.29}

x=4 Hence, Anika bought 4 pairs of socks.

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4 years ago
94% is 80% of what?
Roman55 [17]
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