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Ierofanga [76]
4 years ago
9

Simplify: (-3i)(4i)(-5i)

Mathematics
1 answer:
Alecsey [184]4 years ago
4 0
60i
if you go to mode on your calculator then Chang it from "real" to "a+bi" you can solve for unreal numbers. if you press "2nd" then "." it makes an "i"

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What is the equation of the graph below?
oee [108]

Answer:

B) y=-(x-3)^{2}+2

Step-by-step explanation:

We are given,

The graph of the parabola opens downwards.

This means that the leading co-efficient of the function will be negative.

So, options C and D are not possible.

Moreover, it is given that the graph cuts x-axis near 1\frac{1}{2} i.e. \frac{3}{2} = 1.5 and 4\frac{1}{2} i.e. \frac{9}{2} = 4.5.

i.e. At y=0, the value of x is near \frac{3}{2} and \frac{9}{2}.

A. So, in y=-(x+2)^{2}+2, we put y =0.

i.e. (x+2)^{2}=2

i.e. x=-2\pm \sqrt{2}

i.e. x = 0.68 and x = 3.41

We see that this does not crosses the x-axis at the given points.

So, option A is wrong.

B. Also, in y=-(x-3)^{2}+2, we put y =0.

i.e. (x-3)^{2}=2

i.e. x=3\pm \sqrt{2}

i.e. x = 1.68 and x = 4.41.

Thus, this equation cuts the x-axis near the given points i.e. 1.5 and 4.5.

Hence, the equation of the given graph is y=-(x-3)^{2}+2.

8 0
3 years ago
The triangles are congruent by SSS or HL. The diagram shows the sequence of three rigid transformations used to map ABC onto A"B
Pani-rosa [81]

Answer:

The sequence of transformation used to map ABC onto A"B"C" is reflection, then rotation, then translation.

Step-by-step explanation:

To map ABC onto A"B"C" steps are:

step 1: Reflection of ABC

step 2: rotation of A'BC by some angle to obtain A'B'C'.

step 3: translation of A'B'C' by some units to the right to obtain the given transformation A"B"C".

7 0
3 years ago
Read 2 more answers
Given f(x) = 19x + 12 , find f(3)<br> F(3)= ?
amm1812

Answer:

69

Step-by-step explanation:

to find f(3), we'll have to substitute x with 3

therefore,

f(3) = 19 × 3 + 12

= 57 + 12

= 69

4 0
3 years ago
Read 2 more answers
explain how the digit in the hundredths place influence the rounding of a decimal to the nearest tenth.
Neko [114]
If the hundreth digit is equal to or larger than 5, increase the tenths digit by 1 and get rid of the hundreths digit altogether.
5 0
3 years ago
Count by 1/4s from 2 1/2 to 6 1/2
Bingel [31]

Answer:

there are 16 1/4s

Step-by-step explanation:

1 = 1/4 x 4

2 1/2 + 4 = 6 1/2

4 = 1/4 x 16

7 0
4 years ago
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