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pishuonlain [190]
3 years ago
9

Complete the steps to solve the inequality: 0.2(x + 20) – 3 > –7 – 6.2x

Mathematics
2 answers:
sergeinik [125]3 years ago
5 0
The answer is A.(x>-1.25)
iris [78.8K]3 years ago
4 0

Answer:

The solution of inequality as x>-\frac{5}{4}

Step-by-step explanation:

 Given inequality 0.2(x + 20) – 3 > –7 – 6.2x

We have to solve the given inequality

Consider 0.2(x + 20) – 3 > –7 – 6.2x

Multiply both side by 10, we have

0.2\left(x+20\right)\cdot \:10-3\cdot \:10>-7\cdot \:10-6.2x\cdot \:10

on simplifying, we get,

2\left(x+20\right)-30>-70-62x

Expand by multiplying 2 , we get,

2x+40-30>70-62x

2x+10>70-62x

Subtract 10 both side, we get,

2x+10-10>-70-62x-10

Simplify, we get,

2x>-62x-80

Add 62x both side, we get,

2x+62x>-62x-80+62x

Simplify , we get,

64x>-80

Divide both side by 64, we get,

\frac{64x}{64}>\frac{-80}{64}

Simplify , we get,

x>-\frac{5}{4}

Thus, the solution of inequality as x>-\frac{5}{4}

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Your friend tells you that if you let him keep 50 of your Pokemon cards for a month, he will give you 1 card extra
ivolga24 [154]

Answer:

0.2682 or 26.82%

Step-by-step explanation:

The monthly interest rate (r) that your friend is willing to pay is:

r=\frac{1}{50}=0.02

The following expression converts a monthly interest rate (r) into an annual interest rate (i):

r=\sqrt[12]{1+i}-1

For r = 0.02:

0.02=\sqrt[12]{1+i}-1 \\1.02^{12}-1=i\\i=0.2682

Your friend is willing to pay an annual rate of 0.2682 or 26.82%.

4 0
3 years ago
Find the values for θ that make each statement true. <br> a. sinθ=cos32 <br> b. cosθ=sin(θ+20).
faltersainse [42]

Answer:

a. 58

b. 35

Step-by-step explanation:

a. Given,

sinθ = cos 32

We know that cos x = sin (90 - x)

⇒ sin θ = sin (90 - 32)

⇒ sin θ = sin 58

⇒ θ = 58

Thus, the value of θ would be 58.

b. Given,

cosθ = sin(θ+20),

sin (90 - θ) = sin (θ + 20)

⇒ 90 - θ = θ + 20

⇒ 90 - 20 = θ + θ

⇒ 70 = 2θ

⇒ θ = 35

Thus, the value of θ would be 35.

8 0
3 years ago
Using f(x)=2x^2 and g(x)=3x+4. whats (g of f)(5)? <br>whats (f of g)(5)?​
3241004551 [841]

Answer:

f(g(x)) = 722, and g(f(x)) = 154

Step-by-step explanation:

f(x) = 2x²

g(x) = 3x + 4

g(f(x)) = 3(2x²) + 4

g(f(5)) = 3(2 × 5²) + 4

g(f(5)) = 3(2 × 25) + 4

g(f(5)) = 3 × 50 + 4

g(f(5)) = 154

f(g(x)) = 2(3x + 4)²

f(g(5)) = 2(3 × 5 + 4)²

f(g(5)) = 2 × 19²

f(g(5)) = 2 × 361

f(g(5)) = 722

7 0
3 years ago
Help mee answer the question
Helga [31]

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8 0
2 years ago
Find a common denominator for the following fraction pairs
Vaselesa [24]
A) The least common denominator is 12.  Both 4 and 3 go into 12 evenly.
b) The least common denominator is 40.  Both 5 and 8 go into 40 evenly.
4 0
3 years ago
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