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zubka84 [21]
4 years ago
12

How do you substitute the equation x=y-1

Mathematics
1 answer:
umka2103 [35]4 years ago
7 0
If you need to substitute the equation x = y - 1.
If you have another equation, then you would plug in y - 1 into the x value of the equation you would need to substitute into. 

Hope this helps
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Someone plz help me
Delicious77 [7]

Answer:

C - (8×10) + (9×1) + (4×1/100)

Step-by-step explanation:

89.04

4 is in the hundredths place after the decimal. So it would ve equivalent to 1/100 because the 0 is taking the place of 1/10

<h3>Hope it Helps!</h3>

:)

4 0
3 years ago
Read 2 more answers
Which number is irrational?<br><br> A.0.3  B. C.0.777... D.0.454545…
Savatey [412]
Each of A, C, and D are rational, so presumably B is the answer here.

A is rational, since 10\times0.3=3, so 0.3=\dfrac3{10}.

C is also rational. If x=0.777\ldots, then 10x=7.777\ldots. This would mean 10x-x=9x=7, and so x=\dfrac79.

D is rational by a similar argument. If x=0.4545\ldots, then 100x=45.4545\ldots. So, 100x-x=99x=45, which means x=\dfrac{45}{99}=\dfrac5{11}.
6 0
3 years ago
X + y = 7, what is the value of 2x + 2y -2?<br>btw please hurry, thx &lt;3
stira [4]

Answer:

The answer is 12 because 2x is just 8 and 2y is just 6 so add that and get 14 then subtract 2.

Step-by-step explanation:

5 0
3 years ago
Giving brainliest to whoever can accurately solve these questions first.
lesantik [10]

1. The amount of money in the account after 10 years is 42,317.96 dollars.

2. it will take Pamela and Kevin 7.5 hours to complete the task together

<h3>How to find compound interest?</h3>

Question(1)

Using compound interest formula,

A = p(1 + \frac{r}{n} )^{nt}

where

  • p = principal
  • r = rate
  • n = number of times
  • t = time

Therefore,

p = 30,000

r = 3.5% = 0.035

t = 10

n = 1

Therefore,

A = 30000(1+\frac{0.035}{1} )^{1X10}

A = $42,317.96

Question 2:

Pamela takes 12 hours to complete a task.

Kelvin takes 20 hours to complete same task.

The time it will take both of them can be computed as follows:

using rate principle,

let

x = time it will take both of them to do the work together.

\frac{1}{x}=\frac{1}{12} + \frac{1}{20}

\frac{1}{x}=\frac{20+12}{240}

\frac{1}{x}=\frac{32}{240}

cross multiply

240 = 32x

x = 240 / 32

x = 7.5 hours

Therefore,  it will take Pamela and Kevin 7.5 hours to complete the task together

learn more on compound interest and rate here: brainly.com/question/18104604

#SPJ1

3 0
2 years ago
Solve for x.<br> x3=-125<br> Enter your answer in the box.<br> x =
Nitella [24]
X= 41.666666 repeating. not sure if you wanted the (x)(3) or if you meant x cubed, so x^3
7 0
4 years ago
Read 2 more answers
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