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omeli [17]
3 years ago
9

2x+10+3x+30=180 I just need the explanation how to do it

Mathematics
2 answers:
Ostrovityanka [42]3 years ago
7 0

Answer:

Step-by-step explanation:

2x + 10 + 3x + 30 = 180

Add like terms

5x + 40 = 180

5x = 180 - 40

5x = 140

x = 140 / 5

x = 28

hope it helped

Olenka [21]3 years ago
5 0

(2x + 3x )+(10 + 30)= 180

5x + 40 = 180

5x = 180 - 40

5x = 140

x = 28

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Leokris [45]

Answer:

4. Find the Width by dividing 50 by 2. Then double the length, double the width, and add the products to find the perimeter = Yes

Step-by-step explanation:

The length of a rectangular dog park is 50 feet. The width is half the length.

The formula for Perimeter is given as:

P = 2L + 2W

Length = 50 feet

Width = 50 feet/2

= 25 feet

P = 2(50) + 2(25)

P = 100 + 50

P = 150 feet

Hence, writing yes or no in front of each step in the options.

1. Find the Width by dividing 50 by 2. Then add the length and width and multiply the sum to find the perimeter = No

2. Find the Width by dividing 50 by 2. Then multiply the length by the width to find the perimeter. = No

3. Find the Width by dividing 50 by 2. Then add the length and the width to find the perimeter.= No

4. Find the Width by dividing 50 by 2. Then double the length, double the width, and add the products to find the perimeter = Yes

5. Find the Width by dividing 50 by 2. Then add the sum of each length and the sum of each width to find the perimeter = No

THE CORRECT STEP IN THE ABOVE OPTION IS OPTION 4

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3 years ago
Name this set of numbers which -2/5 belongs ?
Damm [24]
That belongs in the rational #s
5 0
3 years ago
April invested in a lifetime annuity that begins payments at age 65. Her life expectancy is 89. April invested a $1,000,000 into
Mila [183]

Answer:

Monthly payment is $5970

Step-by-step explanation:

Given : April invested in a lifetime annuity that begins payments at age 65. Her life expectancy is 89. April invested a $1,000,000 into the annuity, which earns 4.4% APR compounded monthly.

To find : what is April's monthly payment amount?

Solution :

Formula of monthly payment  

Monthly payment, M=\frac{\text{Amount}}{\text{Discount factor}}  

Discount factor D=\frac{1-(1+i)^{-n}}{i}  

Where, Amount = $1,000,000

Rate r= 4.4%=0.044 compounded monthly

i=\frac{0.044}{12}=0.004  

Time = 89-65=23 years

n=23\times12=276  

Now, put all the values we get,  

D=\frac{1-(1+i)^{-n}}{i}  

D=\frac{1-(1+0.004)^{-276}}{0.004}  

D=\frac{1-(1.004)^{-276}}{0.004}  

D=\frac{1-0.33}{0.004}  

D=\frac{0.67}{0.004}  

D=167.5  

Monthly payment, M=\frac{\text{Amount}}{\text{Discount factor}}  

M=\frac{1000000}{167.5}  

M=5970.1  

Approximately,monthly payment is $5970

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Answer:

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