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Sergio039 [100]
3 years ago
9

Simplify the expression to a + bi form: (10 + 6i)(- 2 - 4i)

Mathematics
1 answer:
shusha [124]3 years ago
4 0

Answer:

4 - 52 i

Step-by-step explanation:

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Point B has coordinate B(1, –1). What is the coordinate of B' under a scale factor of 3? (1, –1) (3, –3) (–2, 2) (–6, 6)
Stella [2.4K]

Answer:

(3,-3)

Explanation:

create an equation set equal to zero:

3×(1,-1)=0

distributive property:

3×1= 3 ; 3× -1= -3

(3,-3)=0

3 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=%5Csqrt%7B75x%5E%7B7%7D%20%7D" id="TexFormula1" title="\sqrt{75x^{7} }" alt="\sqrt{75x^{7} }"
ollegr [7]

Answer:

Step-by-step explanation:

Prime factorize 75

\sqrt{75x^{7}}=\sqrt{5*5*3* x * x * x * x * x * x *x}\\\\ =5*x *x *x \sqrt{3x}\\\\= 5x^{3}\sqrt{3x}

6 0
3 years ago
Rebecca bought a square table for her kitchen. The area of the table’s surface is 65 ft • 2 What is the approximate length of on
rodikova [14]

Answer:

<h2> 8.06ft</h2>

Step-by-step explanation:

step one:

This problem is on the mensuration of solids,

given that the area is 65ft^2

step two:

we know that the expression for the area of a solid is

areaa= length* length

area= l^2

step three:

substituting the value of the area into the expression we have

65=l^2

we need to square both sides to solve for l we have

√65=l

l= 8.05ft

step four:

From the analysis we found the length of one side to be 8.06ft

6 0
3 years ago
Quadrilateral ABCD ​ is inscribed in this circle.<br><br> What is the measure of angle A?
e-lub [12.9K]
Here’s an easy tip.
Always know that the angles next to each other, for example,AB, DC, AD& BC always equal to 180 degrees when added together.
So, we know that angle A plus angle B is 180.
Lets set it up.
2x+1+148=180
Combine like terms.
2x+ 149= 180
Subtract 149 from each side.
2x= 31
X= 15.5 degrees
5 0
3 years ago
Math help please (question 2)
Alex
X>_0 y>_-4 your domain is the opposite of whats inside of the radical, in this case it’s zero but if the number was -5 you would say x>_ 5. Your range is whatever number is in the back, which is negative 4. But you have to pay attention, if there is a negative before the radical your range will be y<_ the number. But here, there isn’t a negative sign in the front of the radical so it’s just y>_ -4.
5 0
3 years ago
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