Answer:
You can memorize formulas like (a+b)^2 but that's about it, I will write down some formulas that might be useful.
(a+b)^2 = a^2+2ab+b^2
(a-b)^2 = a^2-2ab+b^2
(a-b)(a+b) = a^2+b^2
calculate the zeros: x1,x2 = (-b +/- sqrt(b^2-4ac))/2a
Ana y Maria vieron 2 hombres robar una joyería y también vieron como alcanzaron a salir. cuando fueron interrogadas por la policía, las jóvenes dieron información sobre la placa del auto que vieron alejarse: constaba de dos letras seguidas de cuatro dígitos. María aseguraba que la segunda letra era una O o una Q y que el último dígito era un 3 a un 8. Y Ana dijo que la primera letra era una C o una G y que el primer dígito de la definitivamente un 7. ¿Cuántas placas diferentes tendrá que verificar la policía para dar a conocer el auto que vieron Ana y María?
have a government
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Step-by-step explanation:
yan napo lahat answer
PLEASE HELP
Circle each correct surface area. Draw and label the net for each figure if needed. The first one is done for you.
15. Starting at the age of 40, an average man loms 5% of his hair every year. At
what aye should an average man expect to have hall his hair left?
Answer:
I think 50 yrs old
Step-by-step explanation:
I'm not good at percentages, but if you have 100% hair, and lose 5% every year, 5x10= 50 which can be written as 50%, meaning half of 100%
Work out the equation of the line which has a gradient of 2 and
passes through the point (2, 5)
Answer:
y=2x+1
Step-by-step explanation:
You use the equation y=mx+b and substitute m for the slope/gradient. Then you use (2,5) to subtitue for y and x. Solve the equation for b. Then you have your slope and b, and you can make your equation from this.
someone help me please
Answer:
b
Step-by-step explanation:
the x has been cubed meaning
X * X *X = x^3
X^3 has been added to 5
C is saying they multiplied three to x therefore being
B
Find two numbers who have a sum of 21 and a product of 104.
Please include the following in your response:
1) The system of equations used to solve the problem (These are the two equations)
2) The two numbers (The answer)
3) A brief explanation of how you found the numbers
The two numbers are 8 and 13 and the system of equations are x + y = 21 and xy = 104
System of equationsLet the two unknown numbers be x and y
If the sum of the numbers is 21, hence;
x + y = 21
x = 21 - y
If the product is 104, then;
xy = 104
(21-y)y = 104
21y - y^2 = 104
y^2-21y + 104 = 0
Factorize the result
y^2-8y - 13y+ 104 = 0
y(y-8) - 13()y-8) = 0
y = 13 and 8
Hence the two numbers are 8 and 13 and the system of equations are x + y = 21 and xy = 104
Learn more on system of equation here: https://brainly.com/question/847634
put the decimal point in the correct places to get the difference 323 - 362 = 28.68
The correct location is between the two and three for the first digit and the three and six for the second number.
I need help I'm stuck ?
[tex]v = \frac{4}{3} \times \pi \times ({ \frac{8}{2} })^{3} \\ [/tex]
[tex]v = \frac{4}{3} \times 3 \times {4}^{3} \\ [/tex]
[tex]v = {4}^{4} [/tex]
[tex]v = {2}^{8} [/tex]
[tex]v = 256 \: \: {cm}^{3} [/tex]
Amy glues 6 stickers on the sides of a cube: She shows the cube to her friend (see picture). Which sticker is on the face opposite to the mouse?
Answer:
When I grow up I want to be
Which set represents the same relation as the table below?
x
f(x)
0
5
4
2
6
9
9
10
Answer:
its A
Step-by-step explanation:
ur welcome
the difference of 20 and x
Answer:
20-x
Step-by-step explanation:
you need the value of x to answer
solve the pattern to y=-3(x+2)²+4.
Answer:
-8x
Step-by-step explanation:
[tex]-3(x+2)^{2}+4\\-3(2x)^{2}+4\\-12+4\\\ y=-8x[/tex]
PLEASE HELP W BOTH PRECALC QUESTIONS!!!
Answer:
Step-by-step explanation:
Use the formulas supplied in the picture attached. There's nothing to really learn here, it is just a plug-and-chug formula:
[tex]sin(3x)sin(2x)=\frac{1}{2} [cos(3x-2x)-cos(3x+2x)][/tex]
[tex]sin(3x)sin(2x)=\frac{1}{2} [cos(x)-cos(5x)][/tex]
Moving on to the second problem:
[tex]cos(a)sin(b)=\frac{1}{2}[ sin(a+b)-sin(a-b)][/tex]
Therefore:
[tex]2cos(a)sin(b)=sin(a+b)-sin(a-b)[/tex]
Where:
[tex]a+b=5x[/tex]
[tex]a-b=3x[/tex]
Solve for 'a' using the second equation to get:
[tex]a=3x+b[/tex]
Plug this into the first equation to get:
[tex]3x+b+b=5x[/tex]
[tex]3x+2b=5x[/tex]
[tex]2b=2x[/tex]
[tex]b=x[/tex]
Therefore:
[tex]a+x=5x[/tex]
[tex]a=4x[/tex]
Finally:
[tex]sin(a+b)-sin(a-b)=2cos(4x)sin(x)[/tex]
Write the equation of the line, in general form, that has a slope of 3 and a y-intercept of -5.
Answer:
y = 3x - 5
Step-by-step explanation:
To find the equation of the line, you can use y = m x + c.
Here,
m ⇒ slope
c ⇒ y-intercept
Given that,
slope = 3
y-intercept = -5
So, to find the equation of the line you have to simply replace m and c in the formula, (y = m x + c )with the given slope and y-intercept.
Let us solve it now.
y = m x + c
y = 3x - 5
Answer:
y = 3x - 5
Step-by-step explanation:
Slope-intercept form of an equation
y = mx + bm = slopeb = y-interceptGiven that m = 3 and b = -5
y = 3x - 5Olga just got a new job, and she is looking to lease a car. Dealer A offers her a $2400 trade-in on her old car, with lease payments of $360 a month. Dealer B offers a trade-in of $2000 with payments of $320 a month. Olga wants to lease the car for only 6 months. Which deal is better for her?
Answer:
$2000 with payments of $320 a month
Step-by-step explanation:
360 x 6 = 2160
2160 + 2400 = 4560
320 x 6 = 1920
1920 + 2000 = 3920
Answer:
dealer A
Step-by-step explanation:
A: 360×6=2160
2400-2160=240
they save $240
B: 320×6=1920
2000-1920=80
they save $80
Please help!! What is the area to this figure??
Answer:
318
Step-by-step explanation:
find area of the big triangle then split the remaining shape into a large rectangle and a smaller rectangle
Answer:
318 mi²
Step-by-step explanation:
Formulae
Area of a rectangle = width x length
Area of a triangle = 1/2 x base x height
Divide the figure into 1 triangle and 2 rectangles (see attachment).
Area of Triangle 1 = 1/2 x (10 + 6 + (11 - 8)) x 22
= 1/2 x 19 x 22
= 209 mi²
Area of Rectangle 2 = 5 x (11 + 6)
= 85 mi²
Area of Rectangle 3 = 4 x 6
= 24 mi²
Total area = 209 + 85 + 24 = 318 mi²
Mr. Ortega bought his home for $242,800. It is
predicted to appreciate in value by 4.5% each
year. Which is the best prediction for the value
of Mr. Ortega's home in 15 years?
A. $406,690
B. $469,887
C. $1,092,600
D. $1,638,900
Answer:
$469887
Step-by-step explanation:
you should use compound interest formula which is
A=P(1+r/100) ^t
A = 242800 ( 1 + 0.045 ) ^ 15
when you punch this into a calculator you will get 469886.5771.....
when you round it off to a whole number the answer is $469887
How much will you lose
Answer:
i don't know how much will l loose
Richard worked 14 hours this week. He also got a bonus of $50. If he made a total of 232, how much does he get paid per hour.
Item
Small pizza (plain) $8.99
Large pizza (plain) $13.99
Each topping $0.75
Anna ordered a large pizza
with 2 toppings. What was the total cost of her pizza Show your equation and the total cost
Part B
Anna gave the clerk two 10- dollar bill. She received $4.51 in change. Anna said the clerk was incorrect and should have given her 14.51. Who is correct Explain your answer and include an equation or example using money to support your answer.
Answer:
$15.49
Step-by-step explanation:
0.75 x 2 = 1.5
1.50 + 13.99 = 15.49
The clerk is correct; Anna only gave 20 dollars (10x2). 20 - 15.49 = 4.51, which then would be the correct change.
(4x - 3)
Find the value of 'x'.
(2x + 9)
A. 53
B. 14
C. 16
D. 37
Answer:
please the question is not clear
IMAGE IS DOWN BELOW!!
SOMEONE PLEASE HELP ME!!
ILL GIVE YOU BRAINLIST ANSWER AND POINTS!!
Answer:
14.3
Step-by-step explanation:
Formula: a^2 + b^2 = c^2
9+196= 205 then find the square root of 205, approximate then use tenths.
Answer:
14.3
Step-by-step explanation:
Use the following equation:
a² + b² = c² , in which the variable c = hypotenuse, and a & b are the other legs.
It is given that the legs measure 3 and 14 respectively. Plug in the given numbers to the given leg variables:
a² + b² = c²
3² + 14² = c²
Simplify. First, solve the powers, and then combine like terms:
(3 * 3) + (14 * 14) = c²
9 + 196 = c²
c² = 205
Next, root both sides of the equation:
√c² = √205
c = √205 = 14.3178
c = 14.3 (Rounded to the nearest tenth).
14.3 is your answer.
~
help?? its for calc please
Answer:
its logx=logy
Answer:
its logx=logy
select all the expressions that equal 3 to the power of 4.
A.7
B.4 to the power of 3
C.12
D.81
E.64
F.9 to the power of 2
The equivalent expression of 3 to the power of 4. is 9 to the power of 2.
How to determine the equivalent expression?The expression is given as:
3 to the power of 4.
Mathematically the expression is
[tex]3^4[/tex]
Express 4 as 2 * 2
[tex]3^{2*2}[/tex]
Evaluate 3^2
[tex]9^2[/tex]
This means that:
9 to the power of 2.
Hence, the equivalent expression of 3 to the power of 4. is 9 to the power of 2.
Read more about equivalent expression at:
https://brainly.com/question/2972832
#SPJ2
-8 (-3.3) Multiply (-3.3) how many times? Move from 0 to where? Product:
8 times
I hope this helps you
:)
Yo I need to bring up my math grade bad so
y>1/3x
(please show it graphed already :D)
Answer:
Graph Passing through origin with Gradient ⅓
Step-by-step Solution:
1. Aquire x and y Intercepts by substituting 0 to corresponding value.
When x=0,
[tex]y = \frac{1}{3} (0) \\ y = 0[/tex]
When y=0,
[tex]0 = \frac{1}{3} x \\ x = 0[/tex]
i.e. passing through Origin
do the same for any other 2 points and connect the dots/coordinates and extend the line
Determine if the two figures below are congruent. Use the drop-down
menus below to justify why. Which angle on Figure 2 corresponds to
angle M on Figure 1?
Answer: are congruent, rotation
Step-by-step explanation:
can anyone answer this???
Answer:
9 3/10
Step-by-step explanation:
5 4/5 = 5 8/10
3 1/2 = 3 5/10
3 5/10 + 5 8/10 = 9 3/10
[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
Here we go ~
[tex]\qquad \tt \dashrightarrow \:5 \frac{4}{5} + 3 \frac{1}{2} [/tex]
[tex]\qquad \tt \dashrightarrow \:\frac{29}{5} + \frac{7}{2} [/tex]
[tex]\qquad \tt \dashrightarrow \:\frac{58 + 35}{10} [/tex]
[tex]\qquad \tt \dashrightarrow \:\frac{93}{10} [/tex]
[tex]\qquad \tt \dashrightarrow \:9\frac{3}{10} [/tex]
Which graph represents the equation ? [ x - 1/2 ]^2 + [ y + 5/2 ]^2 = 1/4?
Answer: 2
Answer:
B
Step-by-step explanation:
center (1/2,-5/2)
radius=1/2
PLEASE HELPPPP WILL MARK BRAINLIEST
Answer:
2×5÷4=2.5
Step-by-step explanation:
2 boxes × 5 cards ÷ white cards