Answer:
[tex]x=2i-2,\:x=-2i-2[/tex]
Step-by-step explanation:
[tex]x^2 + 4x = -8\\\\\mathrm{Solve\:by\:completing\:the\:square}\\\\\mathrm{Write\:equation\:in\:the\:form:\:\:}x^2+2ax+a^2=\left(x+a\right)^2\\\\\mathrm{Solve\:for\:}a,\:2ax=4x:\quad a=2\\\\\mathrm{Add\:}a^2=2^2\mathrm{\:to\:both\:sides}\\\\x^2+4x+2^2=-8+2^2\\\\\mathrm{Simplify\:}-8+2^2:\quad -4\\x^2+4x+2^2=-4\\\\\mathrm{Complete\:the\:square}\\\left(x+2\right)^2=-4\\\\\mathrm{For\:}f^2\left(x\right)=a\mathrm{\:the\:solutions\:are\:}f\left(x\right)=\sqrt{a},\:-\sqrt{a}\\[/tex]
[tex]\mathrm{Solve\:}\:x+2=\sqrt{-4}:\quad x=2i-2\\\\\mathrm{Solve\:}\:x+2=-\sqrt{-4}:\quad x=-2i-2\\\\x=2i-2,\:x=-2i-2\\[/tex]
~**Will mark brainliest **~
For the correct answers to all three questions
a)
[tex]\dfrac{42}{65}\cdot\dfrac{25}{36}\cdot\dfrac{26}{49}=\dfrac{2\cdot3\cdot7}{5\cdot13}\cdot\dfrac{5\cdot5}{2\cdot2\cdot3\cdot3}\cdot\dfrac{2\cdot13}{7\cdot7}=\dfrac{7}{13}\cdot\dfrac{5}{2\cdot3}\cdot\dfrac{2\cdot13}{7\cdot7}=\\\\\\=\dfrac{1}{1}\cdot\dfrac{5}{2\cdot3}\cdot\dfrac{2}{7}=\dfrac{5}{3}\cdot\dfrac{1}{7}=\dfrac{5}{21}[/tex]
b)
[tex]\dfrac{21}{32}\cdot\dfrac{39}{120}\cdot\dfrac{40}{65}=\dfrac{21}{32}\cdot\dfrac{3\cdot13}{2\cdot2\cdot2\cdot3\cdot5}\cdot\dfrac{2\cdot2\cdot2\cdot5}{5\cdot13}=\\\\\\=\dfrac{3\cdot7}{32}\cdot\dfrac{13}{2\cdot2\cdot2\cdot5}\cdot\dfrac{2\cdot2\cdot2}{13}=\dfrac{21}{32}\cdot\dfrac{1}{5}\cdot\dfrac{1}{1}=\dfrac{21}{160}[/tex]
c)
[tex]\dfrac{15}{90}\cdot\dfrac{36}{75}\cdot\dfrac{27}{42}=\dfrac{3\cdot5}{2\cdot3\cdot3\cdot5}\cdot\dfrac{2\cdot2\cdot3\cdot3}{3\cdot5\cdot5}\cdot\dfrac{3\cdot3\cdot3}{2\cdot3\cdot7}=\\\\\\=\dfrac{1}{2\cdot3}\cdot\dfrac{2\cdot2\cdot3}{5\cdot5}\cdot\dfrac{3\cdot3}{2\cdot7}=\dfrac{1}{1}\cdot\dfrac{2}{5\cdot5}\cdot\dfrac{3\cdot3}{2\cdot7}=\dfrac{1}{25}\cdot\dfrac{9}{7}=\dfrac{9}{175}[/tex]
Solve the equation for x. –1/2x – 3 = 4
Answer:
x=−14
Step-by-step explanation:
I hope this helps you
where is sandy mistake ive been trying for 30 mintues and still cant find it im not very good at math please help
Answer:
Sandy did not follow PEMDAS and added first instead of doing her multiplication and division and then her addition and subtraction the answer would be 18
Find 2 equivalent ratios to 3 : 5 PLSSSSS HELP ASAP
could it be.
15:25
30:50
if its wrong, then just report me
What is the y-intercept of the line that models this situation?
Which would the phrase "the difference between a number and 5" look like as a variable expression?
The phrase “the difference between a number and 5” as a variable expression would look like: x - 5
Classify by degree of polynomial:
3x3 - 6x
Answer:
polynomial of degree 3
Step-by-step explanation:
Given
3x³ - 6x
The degree of a polynomial is given by the exponent of the term with the largest exponent.
In this case 3x³ has exponent 3 and - 6x has exponent 1
Thus this is a polynomial of degree 3
Find CL if TL = 6
Can y’all help me or tell me if I got this right.
Answer:
Sorry bro you are wrong .
Here CL = 2
Step-by-step explanation:
Property of triangles Centroid divides the midian of the triangle into the ratio 2:1
What's the length of side b in the figure?
Answer:
the answer is 91
you have to multiply 7 and 13 to get your answer
Vanya drove 405 miles in 9 hours. Chuy drove 350 miles in 7 hours. Alfredo drove 330 miles in 6 hours. Who was driving at the fastest speed? (fastest MPH/ fastest Unit Rate) Question 14 options: Vanya Chuy Alfredo
Answer:
350 miles in 7 hours
Step-by-step explanation:
1. find
if 9=405
1=v(represent with a variable
2. do the same for the others and select the highest number
15/49 converted into decimal
Answer:
0.30612244897959
Step-by-step explanation:
0.05 is 1/10 of a decimal as
Answer:
1/10 =0.1 in decimal
Step-by-step explanation:
Estimation Solve the equation. First estimate using the perfect square closest to 46. Then use a
calculator
W2 = 46
Step-by-step explanation:
W^2 = 46.
We know that 6^2 = 36 and 7^2 = 49.
Therefore W should be between 6 and 7.
Factor Completely.
4x^3 - 6x^2 + 16x -24
Answer:
2(2x - 3)(x^2 -4)
Step-by-step explanation:
the second one
This is also due tonight..
Answer: F,E,D
Step-by-step explanation: F,E,D is complementary to F,G,C because it is The angle F,E,D is a corresponding angle.
IF YOU GET IT RIGHT THeN YOULL GET BRAINLIEST
Answer:
-51
Step-by-step explanation:
2. Is the data set "dollars of sales per week” quantitative or qualitative?
Answer:
this would be quantitative.
Step-by-step explanation:
because its an amount like dollars of sales per week so it would be quantitative or numbers
For babysitting, Nicole charges a flat fee of $3, plus $5 per hour. Write an equation that will represent the cost.
I REALLY NEED THISSSSS
PLEASE HELP!!!!!!
Lucy owns a bakery. She has 2 cakes baked and can bake 4 cakes every u want ur. Write an equation for the number of cakes baked, c in H, hours
does someone know the other endpoint
Answer:
(-10,11)
Step-by-step explanation:
x-value:
-4-2=-6
-4-6=-10
y-value:
6-1=5
6+5=11
Answer:
the new end point is (-10,11).
The Smith family put a rectangular garden in their back yard. The garden measured 15 34 feet long and 13 13 feet wide. Which is the best estimate of the area of the Smith's garden? Response area
Answer:
201.4 feet
Step-by-step explanation:
Area of a rectangular garden = length × width
Length of the rectangular garden = 15.34 feet
Width of the rectangular garden = 13.13 feet
Area of a rectangular garden = length × width
= 15.34 feet × 13.13 feet
= 201.4142 feet
Approximately 201.4 feet
The Area of the rectangular garden = 201.4 feet
SIMPLE: 25 pts!!! Find the area A of the polygon with the given vertices:)
Hey there! I'm happy to help!
We see that points A and B are on the same horizontal line, and and they are 10 units apart. C and D are on their own horizontal line and they are also 10 apart. This means that this is a square, so we multiply one side by itself
10²=100
The area is 100 square units.
Have a wonderful day! :D
I need help with this question. Also can you explain it to me? Thanks
Answer:
A: not a function
B: function
C: Not a function
D function
Step-by-step explanation:
A: doesn't pass vertical line test
B: No repeating x values, for every x-value there is only one y-value
C: X value has 2 y values
D: pass vertical line test
Find the distance from each vertex on the preimage ABC to the center of rotation p enter the values in the table do the same for each vertex on the other images
Answer:
Enjoy.
Step-by-step explanation:
school
Answer:
Step-by-step explanation:
What value does the 8 represent in the number 865,202 ?
The value of 8 is 800,000.
The value of each digit in a number is known as the place value. The place value of 8 in the number 865,202 is 800,000.
What is the place value of a digit in a number?The value of each digit in a number is known as the place value. The 5 in 350, for example, represents 5 tens, or 50, whereas the 5 in 5,006 represents 5 thousand, or 5,000. It is critical that children that while a digit can be the same, its value is determined by its position in the number.
How do identify the place value of a digit in a number?The place values on the left of the decimal point start as ones, tens, hundreds, and so on. The place value on the right of the decimal point starts from the point and goes to the right as tenths, hundredths and so on
The tens mean multiply by 10The tenth means the tenth part of that digit which is that digit divided by 10The place value of 8 in the number 865,202 is 800,000.
Learn more about the Place Value:
https://brainly.com/question/27734142
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The formula for profit is P = I – E solve the formula for E I need ASAP
Answer:
Step-by-step explanation:
I - E = P
-E = P - I
E = I - P
The Grand Canyon is 277 miles long and 18 miles wide. A study was completed where 17
people can fit in a sample space that is 5 feet by 6 feet. How many people can fit in the
Grand Canyon?
find the value of [tex]\sqrt[3]{8}[/tex]
Answer:
∛8 = 2
Step-by-step explanation:
[tex]\sqrt[3]{8}[/tex]
=2
2*2*2 = 8
An airplane flies with a constant speed of 920 km/h. How far can it travel and 4 hours 12 minutes?
Answer:
3,864 Km
Step-by-step explanation:
920/60=15.333333
15.33333*252=3,864