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larisa [96]
3 years ago
12

What is the answer to this problem?

Mathematics
1 answer:
Sedaia [141]3 years ago
8 0

Answer:

x = 4.

Step-by-step explanation:

These are exterior  alternate angles which are congruent.

So 21x + 6 = 90

21x = 84

x = 4.

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How to solve 3x - 4 = 11+10
Mamont248 [21]

Answer:

x= 25/3 or 8.333333

Step-by-step explanation:

you add 11 to 10 to get 21

3x-4=21

add 4 to both sides, which will cancel out the (-4)

3x=25

divide each term by 3 to get x by itself

3x/3 = 25/3

you will then get x=25/3

3 0
3 years ago
Read 2 more answers
The sum of three numbers is 84, the second number is 2 times the 3rd , the first number is 8 more than the 3rd. What are the num
hjlf

Answer:

a = 27

b = 38

c = 19

Step-by-step explanation:

a + b + c = 84

b = 2c

a = 8+c

8+c +2c+c = 84

4c + 8 = 84

4c = 76

c = 19

b = 2(19) = 38

a = 8 + 19  = 27

5 0
3 years ago
National Textile installed a new textile machine in one of its factories at a cost of $250,000. The machine is depreciated linea
kirill115 [55]

Answer:

The required expression is y=250,000-24,000 t

Step-by-step explanation:

Consider the provided information.

National Textile installed a new textile machine in one of its factories at a cost of $250,000.

That means for 0 year the cost of the machine is $250,000.

This can be written as: (0, 250,000)

Over 10 years with a scrap value of $10,000

That means for 10 year the cost of the machine is $10,000.

This can be written as: (10, 10,000)

Now first find the rate of change:

Rate of change=m=\frac{Rise}{Run}=\frac{10,000-250,000}{10-0}

Rate of change=m=\frac{Rise}{Run}=\frac{-240,000}{10}

Rate of change=m=\frac{Rise}{Run}=-24,000

Now use the point-slope form of an equation of a line with the point (0, 250,000), we can find the required expression.

(y-250,000)=-24,000(t-0)

y-250,000=-24,000 t

y=250,000-24,000 t

Hence, the required expression is y=250,000-24,000 t

6 0
3 years ago
A building in New York is 423 feet tall. The building next to it is 52% taller. How tall is the second building? Show or explain
Neko [114]

Answer:

642.96 ft

Step-by-step explanation:

first building 423 feet tall, that is 100% --> 423 ft

next building 100% + 52% = 152%

second building: so now we multiply (423 * 152%) or ( 423 * 152/100 )

answer is 642.96 ft

7 0
3 years ago
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Choose the word or phrase that completes each sentence.
zaharov [31]

Answer:

Step-by-step explanation:

marginal cost is the money that is paid for producing one more unit of a good. marginal revenue is the money earned from selling one more unit of a good

3 0
4 years ago
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