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STALIN [3.7K]
3 years ago
5

Need help asap......

Mathematics
1 answer:
Korvikt [17]3 years ago
6 0

Answer:

32

Step-by-step explanation:

(2x+20)+3x=180\\5x+20=180\\5x=180-20=160\\x=160/5=32

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An investment earn 6% simple interest. What amount of principal is need to have $3000 after 5 years
irakobra [83]

Answer:

The amount of $1000 principal is needed to have $3000 after 5 years.

Step-by-step explanation:

As the interest formula is

I=Prt

Where

  • P is the principle
  • r is the rate in decimal
  • t is the time in years

Substituting the following values in the interest formula and solve for P

I=$3000

r = 6% = 6/100 = 0.06

t = 5

so the equation becomes

I=Prt

3000=P\left(0.06\right)\left(5\right)

switch both sides

P\left(0.06\right)\left(5\right)=3000

P\left(0.3\right)=3000

P=10000 $

Therefore, the amount of $1000 principal is needed to have $3000 after 5 years.

6 0
3 years ago
Help what is the complete order pair rule?
kondor19780726 [428]
The x values move right 3, so (x+3).
The y values move down 5, so (y-5)
8 0
3 years ago
Anya, Daniel and Victoria shared some tokens for games in an arcade in the ratio 3:5:7.
anzhelika [568]

Answer:

45 Tokens

Step-by-step explanation:

3:5:7

Anya = 3

Daniel = 5

Victoria = 7

Daniel + Victoria = 36

5 + 7 = 36

12 = 36

1 = 3

(1 ratio is 3 tokens)

(3 + 5 + 7) × 3 = 45

4 0
3 years ago
4. Which expression is equivalent
ziro4ka [17]

Answer:

<h2>d. 10a + 5b</h2>

Step-by-step explanation:

5(a + a + b) = 5(2a + b)

use the distributive property:

<em>a(b + c) = ab + ac</em>

<em />

= 5 · 2a + 5 · b =10a + 5b

3 0
2 years ago
Read 2 more answers
Solve the simultaneous equations<br> y=2-5x<br> y = x² – 2x – 8
Aloiza [94]

Answer:

Step-by-step explanation:

sub equation 1 into 2

2-5x=x²-2x-8

0=x²-2x+5x-8-2

0=x²+3x-10

0=(x-2)(x+5)

x=2 or x=-5

sub x into equation 1

y=2-5(2)                            or        y=2-5(-5)

y=-8                                              y=27

8 0
1 year ago
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