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1 year ago

Please answer FAST!!!

Mathematics

1 answer:

kow [346]1 year ago

6 0

Answer:

Step-by-step explanation:

When something is in between the parenthesis, it means you do it first, and since you wont subtract 0.20 from 0.50 (example for letter B) because you havent added 0.50+6.00, that meants that A is the answer

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What is the conjugate? See image below! Please help asap

Stolb23 [73]

9514 1404 393

Answer:

2 +3i
8 -i√5
7 +2i
4 +√7

Step-by-step explanation:

The conjugate is found by changing the sign of the square root term.‡ (For this purpose, i = √-1.)

a) the sign of 3i is changed: 2 + 3i

b) the sign of sqrt(-5) is changed: 8 -sqrt(-5) = 8 -i√5

c) the sign of 2i is changed: 7 +2i

d) the sign of sqrt(7) is changed: 4 +√7

_____

‡ Actually, the conjugate of a binomial is formed by changing the sign <em>between</em> terms. The purpose is to allow the product of the binomial and its conjugate to be the difference of squares.

Conventionally, the conjugate of a complex number is the value with the sign of the imaginary part reversed. That is why (-2i+7)* = 7+2i.

4 0

1 year ago

Suppose some country had an adult population of about 46 million, a labor-force participation rate of 75 percent, and an unemplo

Rus_ich [418]

Answer:

31.74 million people were employed.

Step-by-step explanation:

The unemployment rate is the number of unemployed people divided by the size of the labor force.

So the first step to solve this problem is finding the size of the country's labor force.

Suppose some country had an adult population of about 46 million, a labor-force participation rate of 75 percent.

So the size of the country labor force is:

0.75 * 46 million = 34.5 million people.

Unemployment rate of 8 percent. How many people were employed?

This means that 100 - 8 = 92 percent of people were employed. Remembering, this considers only the labor force, of 34.5 million people. So

0.92 * 34.5 million = 31.74 million

31.74 million people were employed.

5 0

2 years ago

The sum of eight times a number and seven is twice the number

Dovator [93]

8x7=56

i hope this helps

8 0

2 years ago

Why does the formula for area of a triangle makes sense.

galben [10]

Answer: bh=4×5=20b, h, equals, 4, times, 5, equals, 20 square units, so the area of the triangle is \dfrac 12 bh = \dfrac 12 \times 4 \times 5 = 10

bh=

×4×5=10start fraction, 1, divided by, 2, end fraction, b, h, equals, start fraction, 1, divided by, 2, end fraction, times, 4, times, 5, equals, 10

Step-by-step explanation:

4 0

2 years ago

Please help me on number 11

AysviL [449]

Answer:

41.1

Step-by-step explanation:

4 0

2 years ago