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3 years ago

Which two number that round to 320 when rounded to the nearest ten

Mathematics

1 answer:

m_a_m_a [10]3 years ago

8 0

Now 320 has a value less than 5 at the ones place . so , there will be no change . Hence the answer is 320.

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If 5x−4y=22 and 3x+6y=30, what is the value of x−5y

amm1812

Answer:

-4 See Below:

Step-by-step explanation:

When you have a system of equations, you need to solve for one variable, and subsitute that variable into the other equation to solve for the other variables value.

3x +6y = 30 In this case, it would be easier to solve for x.

3x= 30-6y Divide both sides by 3

x= 10-2y

Now we substitute for x in the other equation.

5x- 4y = 22

5(10-2y)-4y=22

50-10y-4y=22

50-14y=22 Add 14y to both sides

50= 14y + 22 Subtract 22 from both sides

28 = 14y Divide by 14 on both sides.

y = 2

Substitute y=2 and solve for x.

x = 10- 2y

x= 10-2*2

x= 10-4

x= 6

Now we know y=2 and x=6, so we can substitute them into x-5y to find its value.

x - 5y

= 6-5*2

=6-10

= -4

6 0

3 years ago

Darrell Frazier owns a home that has a replacement value of $87,500. He purchased a homeowner’s policy for 80 percent of the hou

levacccp [35]

Answer:

According to the table, the type of construction and the fire protection class, Darrell will pay US$ 213 for the annual insurance premium.

Step-by-step explanation:

1. Let's check and use the information given to solve the question:

Replacement value of Darrell's home = US$ 87,500

Value of the homeowner's policy = 80% of Darrell's house

Type of Darrell's home construction = Brick

Fire protection class = 3

2. Let's find the exact amount of the insurance coverage:

Amount of insurance coverage = 80% of Darrell's house

Amount of insurance coverage = 80% * 87,500

Amount of insurance coverage = 0.8 * 87,500

Amount of insurance coverage = 70,000

The amount of insurance coverage is US$ 70,000

According to the table, the type of construction and the fire protection class, Darrell will pay US$ 213 for the annual premium.

Same answer for question 13882475

4 0

3 years ago

How to solve 7(x+2y)=

Lemur [1.5K]

Answer:

7x + 14y

Step-by-step explanation:

7(x + 2y)

Multiply 7 by the values inside the parenthesis (x + 2y)

7x + 14y

Hope this helps :)

8 0

3 years ago

Name the property of multiplication that is shown by the equation 4x*1=4x

Artyom0805 [142]

Answer:

Identity

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Multiply. –58.7 • 13 Divide. -6 ÷ 1/4

Vitek1552 [10]

The first one is -763.1 and the second one is -24

3 0

3 years ago