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3 years ago

For all values of x, which expression is equivalent to 4(5x + 3) - 4x?

1 answer:

6 0

4(5x + 3) - 4x
4*5x = 20x
4 * 3 = 12
20x and 4x are like terms,so 20x - 4x=16x
12 doesn’t have anything to go with,so it just stays

16x + 12 (B is the correct answer)

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Find the product. (8 − 3i)(5 − 2i)

Delicious77 [7]

Answer:

34 - 31i

Step-by-step explanation:

first, distribute to get 40 - 16i - 15i + 6i^2. i^2 = -1 so 6(-1) is -6. simplify to get 34 -31i

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3 years ago

rancho middle school has an average of 23/3/8 students per teacher. write this mixed number as a decimal

Len [333]

Rancho middle school has an average of 23 3/8 students per teacher.write this mixed number as a decimal.

Answer:

$23\frac{3}{8} = 23.375$

Step-by-step explanation:

Given:

The given mixed number is $23\frac{3}{8}$

We need to write the given mixed number as a decimal.

So, we find the decimal number by separating the parts.

$=23+\frac{3}{8}$

The value of $\frac{3}{8}=0.375$

$=23+0.375$

$=23.375$

Therefore, the decimal number of given mixed number is $=23.375$

8 0

3 years ago

1/y - 1/x = 1/60 3y - 2x = 6 (Simultaneous question)

Daniel [21]

1y - 1/x = 1/60 = x*y =60 = x=60/y

3y - 2(60/y) = 6

3y^2-120=6y

3(y^2-40-2y) =0

y^2-40-2y=0

y = 7.4

3(7.4)-2x=6

22.2-2x = 6

2x = -16.2

x = -8.1

6 0

3 years ago

If x<0 and y>0, determine the sign of the real number x-y/xy ...?

Ludmilka [50]

If x<0 and y>0, then the sign of the real number x-y/xy would be positive. If x is negative and y is positive then x-y is negative and xy is negative. A negative number divided by another negative number would be positive. Hope this answers the question.

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3 years ago

Which equation(s) has a slope of 2? * y=x+2 y=-2x y=2x+5

Rudik [331]

it would have to be the first one y=x+2

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3 years ago