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katrin2010 [14]
3 years ago
10

I need help finding x! Please show work for both!

Mathematics
2 answers:
Butoxors [25]3 years ago
5 0

Answer:

1. -5

2. -2

Step-by-step explanation:

1. 25-3x=40

-25        -25

-3x=15

/-3   /-3

x=-5

2. 1/3(x-10)=-4

       1/3x=-4

        x3   x3

      x-10=-12

        +10 +10

           x=-2

Alenkinab [10]3 years ago
4 0
1. Answer x=-5
You would subtract 25 from each side of the equal sign, taking 25 away from 40 and 25 away from 25, isolating the x. So you would then have -3x=15. You would then divide each side by -3, and getting x=-5
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4 years ago
A 30-year, $1,000 strip bond was traded for $167, four years after it was issued. What was the semi-annually compounded nominal
Anna007 [38]

Answer:

The semi-annually compounded nominal rate at that time is 7%

Step-by-step explanation:

In order to calculate the semi-annually compounded nominal rate at that time we would have use the following formula:

PV= FV/(1+r)^n

According to the given data we have the following:

PV=$167

FV=$1,000

n=30-year, and strip bond was traded four years after it was issued, hence, n=(30-4)*2 =52

Therefore, 167= $1,000/( 1+r)^52

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Therefore, The semi-annually compounded nominal rate at that time=3.50%*2

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The semi-annually compounded nominal rate at that time is 7%

4 0
4 years ago
Lionel is planning a one-day outing.
pychu [463]

Answer:

Option B - y=5x+40 and  y=3x+60

Step-by-step explanation:

Given : The Thrill amusement park charges an entry fee of $40 and an additional $5 per ride, x. The Splash water park charges an entry fee of $60 and an additional $3 per ride, x.

To find : Which system of equations could be used to determine the solution where the cost per ride of the two amusement parks, y, is the same?

Solution :

Let x be the number of rides and

y be the cost per ride.

According to question,

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Therefore, The required system of equations form are

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So,Option B is correct.

6 0
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