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Jet001 [13]
3 years ago
14

Solve these simultaneous equations. 4x – 7y = – 5 3x – 2y = – 7 Solution: x=

Mathematics
1 answer:
AlexFokin [52]3 years ago
5 0

Answer:

  1. \huge{x =  -  \frac{5}{4}  +  \frac{7}{4} y}
  2. \huge{x =  -  \frac{7}{3}  +  \frac{2}{3} y}

Step-by-step explanation:

1. 4x - 7y =  - 5

4x =  - 5 + 7y

\boxed{\green{x =  -  \frac{5}{4}  +  \frac{7}{4} y}}

y E R

○○•○○

2. 3x - 2y =  - 7

3x =  - 7 + 2y

\boxed{\green{x =  -  \frac{7}{3}  +  \frac{2}{3} y}}

y E R

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If A = (1,2,3,4,5), then the number of proper subsets of A is- ​
Mandarinka [93]

Answer: One of them is the set {1,2,3,4,5,6}itself; one is the empty set, containing no elements. “Proper subset of a set ” usually denotes a subset in which at least one element of the original set is missing; so one of the subsets - the original set iitself - is not a proper subset. Therefore the answer is 63.

Step-by-step explanation:

8 0
3 years ago
Which of the following is not a tax collected by the federal government?
rodikova [14]

The tax that is not collected by the federal government is \boxed{{\text{excise tax}}}. Option (b) is correct.

Further explanation:

Given:

The options are as follows.

A. Sales tax

B. Excise tax

C. Income tax

D. Payroll tax

Explanation:

The sales tax is a tax that is imposed on the products sold. The sale tax is collected by the federal government.

The excise tax is the tax that is imposed on purchasing the goods .The excise tax is not collected by the federal government.

The tax that is imposed on the salaries of an individual or company is known as the income tax.

The income tax is collected by the federal government.

The tax that is imposed on the employer as the percentage of salaries of employees is known as the payroll tax. The payroll tax is collected by the federal government.

Option (a) is not correct.

Option (b) is correct.

Option (c) is not correct.

Option (d) is not correct.

Hence, the tax that is not collected by the federal government is \boxed{{\text{excise tax}}}. Option (b) is correct.

Learn more:

1. Learn more about inverse of the functionhttps://brainly.com/question/1632445.

2. Learn more about equation of circle brainly.com/question/1506955.

3. Learn more about range and domain of the function brainly.com/question/3412497

Answer details:

Grade: High School

Subject: Mathematics

Chapter: Investment

Keywords: Federal government, tax, sales tax, excise tax, income tax, payroll tax, state government, revenue, local government.

8 0
3 years ago
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the mass of a dust particle is 0.000000000735 kilograms. What is the mass written in scientific notation?
Romashka-Z-Leto [24]
0.000000000735 = 7.35 x 10^-10 kg
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3 years ago
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Answer:

6. (a) 7. (b) Im pretty sure 8. (d)

Step-by-step explanation:

A real number is basically any number whatsoever, meaning a real number can also be irratonal.

7. pi is 3.1415926535... but doesn't repeat so it doesn't go on a number line, the sq root of -16 is -4 which has a place on the line, and the repeating decimal would have no place on a number line.

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Answer:

1000 milliliters in a liter, so 325 mL = 0.325 L

Step-by-step explanation:

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