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Anastaziya [24]
3 years ago
9

Simplify the expression please! -5+i/2i

Mathematics
1 answer:
melamori03 [73]3 years ago
3 0

Answer:-9/2 or -4.

5

Step-by-step explanation:

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Ella played a math game and had the five cards shown.
wlad13 [49]

4Step-by-step explanation:

5 0
3 years ago
The perimeter of (the distance around) ABCD is 66, and DC is twice as long as CB. How long is AB?
ArbitrLikvidat [17]

Answer:

AB=22\ units

Step-by-step explanation:

we know that

In this problem ABCD is a rectangle

so

DC=AB

BC=AD

Let

BC ---> the length of rectangle

DC ---> the width of rectangle

we know that

The perimeter of rectangle is equal to

P=2(BC+DC)

we have

P=66\ units

so

66=2(BC+DC)

simplify

33=BC+DC ----> equation A

DC=2BC ----> equation B

substitute equation B in equation A

33=BC+2BC

Solve for BC

Combine like terms

33=3BC

Divide by 3 both sides

BC=11\ units

<em>Find the value of DC</em>

DC=2BC ----> DC=2(11)=22\ units

Remember that

DC=AB

therefore

AB=22\ units

3 0
3 years ago
A model ship is 28 in. by 65 in. Use the scale 1 in. : 1/2 ft to find the dimensions of the actual ship
Kruka [31]
The scale given (1 in : 1/2 ft) implies that 1 inch on the model is equal to 1/2 foot on the actual ship. Therefore, we can multiply the two inch values by 1/2 foot to find the true dimensions of the ship in feet. Starting with 28 inches:

28 × (1/2 ft) = 14 ft

28 inches is proportional to 14 feet. Now calculate 65 inches:

65 
× (1/2 ft) = 32.5 ft

65 inches is proportional to 32.5 feet. Therefore, the answer to this problem is:

D) 14 ft. by 32 1/2 ft.

I hope this helps!
6 0
3 years ago
How to solve for quadratic equations with inequalities?
Inga [223]
First solve the quadratic as you would an equation, so you will get two real zeroes p and q so that (x-p)(x-q)=0 is another way of expressing the quadratic. All quadratics can be represented graphically by a parabola, which could be inverted. When the x² coefficient is negative it’s inverted. If the coefficient of x² isn’t 1 or -1 divide the whole quadratic by the coefficient so that it takes the form x²+ax+b, where a and b are real fractions. The curve between the zeroes will be totally below the x axis for an upright parabola, and totally above for an inverted parabola. This fact is used for inequalities. An inequality will be <, ≤, > or ≥. This makes it easy to solve the inequality. If the position of the curve between the zeroes is below the axis then outside this interval it will be above, and vice versa. So we’ve defined three zones. x

q, and p

3 0
3 years ago
There are 38 students. If there are 6 seats at each table, how many tables would be needed for all of the students to be able to
Leto [7]

Answer:

7 tables

Step-by-step explanation:

So if 6 students can fit at each table, you divide 38 by 6. You get 6 1/3 ,but since you can't get 1/3 of a table, you have to get 7

4 0
3 years ago
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