Answer: 14-13i
Step-by-step explanation:
Answer:
14 - 13i
Step-by-step explanation:
We MUST do the work inside parentheses before anything else.
Step 1: evaluate i^2: (2i-1)(i^2-3i-7) = (2i-1)(-1 -3i -7)
Step 2: combine like terms inside the parentheses: (2i-1)(-8 - 3i)
Step 3: perform the indicated multiplication of binomials:
-16i + 6 + 8 + 3i
Step 4: combine like terms of the above expression: 14 - 13i
if the length of a rectangle in terms of x is x^2+2x-3 and its width is 2x^2+3x+5, what is the perimeter of this rectangle?
perimeter: ___units
Step-by-step explanation:
perimeter=(L+W)2
L=x^2+2x-3
W=2x^2+3x+5
(x^2+2x-3+2x^2+3x+5)2
(x^2+2x^2+2x+3x-3+5)2
(3x^2+5x+2)2
p=(6x^2+10x+4)units
Guys I rly need help. DUE SUPER SOON!
Answer:
Answer is B hope this helps
Step-by-step explanation:
Which expression is equivalent to 5^{10} · 5^{5}
A. 5^{2}
B. 5^{5}
C. 5^{15}
D. 5^{50}
Answer:
C should be correct
Step-by-step explanation:
I am not sure if you or anybody else does this another way or maybe the same way, who knows.
Anyways, what I did here was just simply add the powers, and no, not the base, I mean what it is being multiplied by.
When I did this, I got 5^15, but I had to check to make sure, which is what I did
5^10x5^5 is 30517578125
And guess what.
5^15 = 30517578125
So the answer is C, and I hope my explanation helps in a way.
The Smiths want to fence their square garden, which has an area of 289 square feet. What would be the minimum amount of fencing needed to complete the project? A) 68 feet of fencing B) 17 square feet of fencing C) 289 feet of fencing D) 17 feet of fencing
Answer:
68 feets of fencing
Step-by-step explanation:
Given that:
Area of square garden = 289 ft²
The side length of square garden can be obtained thus :
Area of a square = s²
Where s = side length
s² = 289
s = sqrt(289)
s = 17
Perimeter of square garden : 4s
Perimeter = 4* 17 = 68 feets
Which one is false ????
Answer:
b
Step-by-step explanation:
f(x)= 3x and g(x)= -x+4, so f(g(2))=?
Answer: 6
Step-by-step explanation: first, you plug in 2 into the g(x) function. So, replace x with 2 in the second function g(x). -2 + 4 = 2. Then take that answer (2), and plug that into the x for f(x). 3 x 2 = 6
Answer:
[tex]f(g(2))=6.[/tex]
Step-by-step explanation:
We have [tex]g(x)=-x+4 \Rightarrow g(2)=-2+4=2[/tex]
Since [tex]f(x)=3x[/tex] then [tex]f(g(2))=f(2)=3.2=6.[/tex]
Can someone help this is due today
Answer:
24
Step-by-step explanation:
[tex] {ba}^{2} = {bc}^{2} - {ac}^{2} \\ {ba}^{2} = {10 }^{2} - {8}^{2} \\ ba = \sqrt{100 - 64} \\ ba = \sqrt{36 } \\ ba = 6[/tex]
Area of triangle = 1/2 × AC × BA
= 1/2 × 8 × 6
= 48/2
= 24 in²
#CMIIWWhich inference can be made when analyzing the data in the table?
Answer
Your saviour has come!
The answer is A
Step-by-step explanation:
Mrs. Vargas went to lunch, and the bill was $28 for the meal. How much will the tip be if she wants to leave a 15% tip?
Explain
Answer:
Step-by-step explanation:
Percent means per one hundred, so to leave a 15% tip
28(15/100)=$4.20
The tip will be $4.20
What is an equation of the line that passes through the points (6,-3) (-6, -5)
Step-by-step explanation:
m1=y2-y1/x2-x1
=-5-(-3)/-6-6
=-2/-12
=1/6
-3=1/6(6)+b
b=-4
y=1/6x-4
select all of the trips that would take 2 hours
Answer:
a field trip
a road trip
a trip to a far antique museum
Uhm I would also appreciate if i had options.
1. A rectangle is 3/4 as wide as it is long. How
wide is the rectangle if it is 8 inches long?
A 5 in.
B 6 in.
C 7 in.
Answer:
B. 6 inches
Step-by-step explanation:
To find how wide it is, multiply the length by 3/4
8(3/4)
= 6
The width of the rectangle in 6 inches.
So, the correct answer is B. 6 inches
Brian has $12 and he makes $9 per hour washing cars. This can be represented as: y = 9x + 12. What does the slope represent? *
What is the area of this rectangle?
Answer:
11 1/4
Step-by-step explanation:
1. count all the wholes -> 8
2. add all the halves ->there are 6 halves which is 3 wholes
3. add 1/4
4. add it all -> 8+3+1/4=10 1/4
A store sells card games for $6.95 each. Board games sell for $15.00 each. Monica
is buying 3 card games and x number of board games. Which equation can be
used to find y, the total price Monica must pay in dollars?
Answer:
20.85+x=y
Step-by-step explanation:
Since Monica is buying 3 card games, we multiply 3*6.95. Then, we have 20.85. Then, we will add x to 20.85 to find y. So final answer is :
20.85+x=y
HOPE THIS HELPS
What shape is produced when slicing a right rectangular pyramid perpendicular to the base?
Lynn asked six friends how many cars their parents own. She recorded 1, 1, 2, 2, 2, and 4 cars.
What is the mean absolute deviation of the number of cars?
Round to the nearest tenth, if needed.
A. 0.7
B. 1.1
C.1.4
D. 2
Answer: Its A 0.7
Step-by-step explanation:
Answer:
The answer is A. 0.7
Step-by-step explanation:
I took the test
Write an equation of the line in slope-intercept form. (0,2) (3,3)
i dont see an image
Step-by-step explanation:
Answer: y = 1/3x +2
Step-by-step explanation:
The slope-intercept form of an equation looks like this:
y=mx+b
The m stands for the slope and the b stands for the y-intercept. We need two points on the line to write out this equation.
We have the two points you entered, so let's start by getting the slope. (1/3)
Now that we have the slope, we can plug it into our equation: y = 1/3x+b
To get b, our y-intercept, we just need to plug in one of the points you entered and solve. Now that we have both our m and b values, we can plug them in to get our equation: Y= 1/3x+2
Hope it helps.
Help me! Best answer gets brainliest
Answer:
the answer is 24 but its a little hard to explain why, if u need me to i will
Step-by-step explanation:
Answer:
the answer is 20 Ft i just looked it up on quizz
Step-by-step explanation:
-10(4x-5) what are all expressions that equal
Answer:
-40x+50
Step-by-step explanation:
-10(4x-5)
-40x+50
2 Addition of which two number is
736
Step-by-step explanation:
it can be 700 + 36
hope it helps...
pls help me nowwwwwwwwwwww
Answer:
132
Step-by-step explanation:
caculator
Answer:
132
Step-by-step explanation:
negative times a negative = a positive and 11 times 12 is 132
Someone help please :) and make sure it’s right please
Answer:
I think it's 6 but you'll have to wait for someone who's smarter or sure ab the answer sorry
Answer:
x = 6
Step-by-step explanation:
10x + 10 = 11x + 4 <-- Subtract 10 from the left side
10 = x + 4 <-- Subtract 4 from the right side
6 = x
The Hernandez family orders 3 large pizzas. They cut the pizzas so that each pizza has the same number of slices, giving them a total of 24 slices.
The Wilson family also orders several large pizzas from the same pizza restaurant. They also cut the pizzas so that all their pizzas have the same number of slices. For the Wilson family, the equation y = 10x represents the relationship, where x represents the number of pizzas and y represents the number of total slices.
Which statements best describe the pizzas bought by the Hernandez and Wilson families? Select two options.
For the Hernandez family, the equation y = 3x represents the relationship between the number of slices and number of pizzas, where x represents the number of pizzas and y represents the number of total slices.
For each family, a graph of the relationship between number of pizzas, x, and number of slices, y, goes through the point (0, 0) and is a straight line.
The Hernandez family’s slices are smaller than the Wilson family’s slices.
If the Wilson family ordered 3 large pizzas from the same restaurant as the Hernandez family, they would have more slices than the Hernandez family after each family cut their pizzas into slices.
The constant of proportionality is 10 for the Wilson family, but cannot be determined for the Hernandez family.
Answer:
B and C sry if Im not correct
Step-by-step explanation:
Find C.
Round to the nearest tenth
Answer:
Step-by-step explanation:
c^2=a^2+b^2-2abcosC
cosC= (a^2+b^2-c^2)/(2ab)
C=arccos[(a^2+b^2-c^2)/(2ab)]
C=arccos(90^2+55^2-50^2)/(2(90)55)
C=arccos(8625)/(9900)
C=29.4 degrees
Find the 7th term of the geometric progression which begins -6250, 1250, -250....
Answer:
a(7) = -0.4
Step-by-step explanation:
The general formula for a geometric progression is a(n) = a(1)*r^(n - 1), where r is the common ratio. In this problem, a(1) = -6250. To find r, we divide 1250 (the 2nd term) by -6250 (the 1st term), obtaining r = -0.2.
Then the formula for THIS geometric progression is
a(n) = -6250*(-0.2)^(n - 1).
Thus, the 7th term of THIS progression is
a(7) = -6250*(-0.2)^(7 - 1), or -6250*(-0.2)^6, or -0.4
Answer:
a₇ = - [tex]\frac{2}{5}[/tex]
Step-by-step explanation:
The nth term of a geometric progression is
[tex]a_{n}[/tex] = a₁ [tex]r^{n-1}[/tex]
where a₁ is the first term and r the common ratio
Here a₁ = - 6250 and r = [tex]\frac{a_{2} }{a_{1} }[/tex] = [tex]\frac{1250}{-6250}[/tex] = - [tex]\frac{1}{5}[/tex] , then
a₇ = - 6250 × [tex](-\frac{1}{5}) ^{6}[/tex] = - 6250 × [tex]\frac{1}{15625}[/tex] = [tex]\frac{-6250}{15625}[/tex] = - [tex]\frac{2}{5}[/tex]
help help PLEASE i will love you for eternity, THATS IF I GET IT RIGHT
Answer:
the first ones is the first one :)
Determine if DE is parallel to AC. Show all your work!!!
24
40
E
22.5
D
15
B
Answer:
Step-by-step explanation:
We will prove the converse of the postulate,
"If a line parallel to one side of a triangle and it intersects other two sides of the triangle, then the line will divide both the sides in the same ratio"
Segment DE intersects AB and BC at D and E respectively,
Ratio of the segments of two sides,
[tex]\frac{AD}{DB}=\frac{CE}{EB}[/tex]
[tex]\frac{22.5}{15}=\frac{24}{40-24}[/tex]
1.5 = 1.5
True.
Therefore, lines AC and DE are parallel.
At work, Mr. Grinnell receives 20 phone calls every 60 minutes. How many calls should he expect to receive in 180 minutes?
40
60
80
100
40
Answer:
60
Step-by-step explanation:
Answer:
60
Step-by-step explanation:
180/60=3 so 3*20=60 so 60 is your answer.
Liam had a stack of 50c coins. He spent €2.75 and had €1.75 left. How much did he have at the start?
Answer:
Total coins Liam at the start = 9
Total money Liam in the start = €4.5
Total money Liam in the start = 450 cent
Step-by-step explanation:
We know that
1€ = 100 cent
⇒1 cent = 0.01 €
⇒50 cent = 0.5€
Now,
Total money spent = €2.75
Total money left = € 1.75
So, Total money in the initial = Total money spent + Total money left
= €2.75 + €1.75 = €4.5
⇒Total money in the initial = €4.5
Now,
1€ = 100 cent
⇒€4.5 = 450 cent
Now,
As Liam has a stock of 50 cent coins
So, total coins Liam left with = 450/50 = 9 coins