Answer:
-5/2
Step-by-step explanation:
the slope of a perpendicular line is the opposite reciprocal
Find the greatest and least values of arg z if (z +2i = 1)
Answer:
1 is least 2 is greatest
Step-by-step explanation:
What is the solution to the equation x - 5 = 15?
Answer:
x=20
Step-by-step explanation:
x - 5 = 15
x +5 = +5
x = 20
Answer:
20
Step-by-step explanation:
if u go on your calculator there is a math button click it and go to numrical equations and type it out the first block is the numbers and stuff in front of the equal sign and the second block is after it
x² = 30² +21² -2(30)(21) Cos 123°
Answer:
x ≈ 44.69
Step-by-step explanation:
x² = 30² +21² -2(30)(21)Cos123°
x² = 900 + 411 - 1260cos123°
x² = 1311 - 1260cos123²
~Take square root of both sides
x = √1997.245184111
x ≈ 44.69
Best of Luck!
what is the solution to 2/3a - 1/6 = 1/3
Answer:
Step-by-step explanation:
a=3/4
Tell me 3 points that would be on the graph of y = 2x + 3
Answer:
-1.5,0, 0,3 and -4,-5
Step-by-step explanation:
i need help with 4, 5, and 6
Answer:
To find the slope you do rise/run and the slope for 4 is 6/5 the slope for 5 is ZERO slope or 0/5 I know because it goes 0 times up and 5 times to the right. And for 6 is UNDEFINED slope or 6/0 because it goes 6 times up and 0 time to the sides
Step-by-step explanation:
Answer:
4. 6/5 5.zero 6. undefined
Step-by-step explanation:
so you do y1-y2/x1-x2
4-(-2)/2-(-3)
6/5
5. because it doesn't go up or down
6. because the x doesn't change
Selena is graphing the inequality x <-2. She begins by drawing a number line and placing an open circle at -2
-7 -6 -5 -4 -3 -2 -
0
1
2 3
Which could be Selena's next step?
O shading the number line to the left of the open circle
O shading the number line to the right of the open circle
O shading the number line to the right and left of the open circle
O shading in the open circle
Look at the picture
Answer:
shade the number line to the left of the open circle
Step-by-step explanation:
x is less than - 2, so it could be any number lower than -2. for example, -3, -4, -5, etc.
Answer:
A. shade the number line to the left of the open circle
Step-by-step explanation:
To aid in sea navigation, Little Gull Island Lighthouse shines a light from a height of 91 feet above sea level with an unknown angle of depression. If the beam of light shines on the sea surface at a point that is 865 feet away from the base of the lighthouse, what is the angle of depression?
Answer:
[tex]\approx 6^\circ[/tex]
Step-by-step explanation:
Given that:
Little Gull Island Lighthouse shines a light from a height of 91 feet above the sea level.
The angle of depression is unknown.
Distance of the point at sea surface from the base of lighthouse is 865 ft.
This situation can be modeled or can be represented as the figure attached in the answer area.
The situation can be represented by a right angled [tex]\triangle ABC[/tex] in which we are given the base and the height of the triangle.
And we have to find the value of [tex]\angle BAD \ or \ \angle C[/tex] (Because they are the internal vertically opposite angles).
Using tangent ratio:
[tex]tan\theta = \dfrac{Perpendicular}{Base}[/tex]
[tex]tanC = \dfrac{AC}{BC}\\\Rightarrow tanC = \dfrac{91}{865}\\\Rightarrow tanC = 0.105\\\Rightarrow \angle C \approx 6^\circ[/tex]
Therefore, the angle of depression is: [tex]\approx 6^\circ[/tex]
Which can be used to expand the expression below?
5 (3 x minus StartFraction 6 over 7 EndFraction)
associative property
commutative property
distributive property
subtracting
Answer:
the 3ed one distributive property
Step-by-step explanation:
A holiday costs £1900. Work out the
price after a 9% discount.
Answer:
$1729
Step-by-step explanation:
[tex]\frac{100-9}{100} * 1900[/tex]
Answer:
1729
Step-by-step explanation:
1900 divided by 100 is 19
1% equals 19
1 times 9 equals 9
19 times 9 equals 171
171 = 9%
171 - 1900 = 1729
price after a 9% discount is 1729
solve for X
3x - 6 = 30
Answer:
The answer is x=12
Step-by-step explanation:
3x - 6 = 30
3x-6+6=30+6
3x=36
To find x divide both sides by 3.
3x/3=36/3
x=12
Prove that sin(3x)/sin(x)·cos(x) = 4cos(x)-sec(x)
Here is a huge hint:
sin(3x) = 3 sin (x) - 4(sin x)^3
sec (x) = 1/sin(x)
Take it from here.
The expression {4 cos(x) - sec(x)} is equivalent to {sin(3x)/sin(x) cos(x)} is proved below.
What is a mathematical equation and expression?In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function.Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.A mathematical expression is made up of terms (constants and variables) separated by mathematical operators.A mathematical equation is used to equate two expressions.Given is the equation -
sin(3x)/(sin(x)·cos(x)) = 4cos(x) - sec(x)
We have the following equation -
{sin(3x)/(sin(x)·cos(x)} = 4cos(x) - sec(x)
Now, we know -
sin3x = 3 sin x - 4 sin³x
So, we can write -
(3 sin x - 4 sin³x)/(sin(x)·cos(x) = 4cos(x) - sec(x)
sin(x) (3 - 4sin²x) / sin(x) cos(x) = 4cos(x) - sec(x)
(3 - 4sin²x)/cos(x) = 4cos(x) - sec(x)
(3 - 4sin²x) = cos(x){4 cos(x) - 1/cos(x)}
(3 - 4sin²x) = 4cos²x - 1
3 + 1 = 4cos²x + 4sin²x
4 = 4(cos²x + 4sin²x)
4 = 4
1 = 1
LHS = RHS
Therefore, it is proved that the expression {4 cos(x) - sec(x)} is equivalent to {sin(3x)/sin(x) cos(x)}.
To solve more questions on functions, expressions and polynomials, visit the link below -
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Is 45/7 a rational number
Answer:
yes
Step-by-step explanation:
it comes to an end im so sorry if this is wrong
Answer:
It is irrational, if its not a perfect square. Since 45 is not a perfect square, it is an irrational.
Step-by-step explanation:
I need the answer ASAP
Answer:
[tex]p\leq 56[/tex]
Step-by-step explanation:
Plz mark brainliest!
I need 3 more questions
Answer:
The answer is 88%
Step-by-step explanation:
To find a percentage, just divide the top number by the bottom. 22 divided by 25 is 0.88 which means 22 out of 25 is 88%.
Another way to do it is to multiply both 22 and 25 by 4. The denominator will now equal 100 so now the top number will be the percentage. 22*4 is also 88.
Hope this helped.
The premium membership at a health club is $40 per month. This is
$15 more than the cost of a standard membership. What is the cost of a standard
membership? Do not type the $ in your answer.
Quick I need help!!!!! Plzzz help meeeee!!??!!!??!?
Answer: 25
Step-by-step explanation:
are -1/2 and 2 perpendicular
Answer:
Well, if -1/2 and 2 are slopes of 2 lines, then yes, they are perpendicular.
Step-by-step explanation:
The slope of a perpendicular line is the opposite reciprocal of another line.
Normal line's slope: x
Perpendicular line's slope: -1/x
У
y = [?]
Enter the number that belongs in
the green box
Enter
Answer:
[tex]y = {60}^{o} [/tex]
Step-by-step explanation:
From the markings in the diagram, both triangles are equilateral and each angle in an equilateral triangle is 60°
What is the value of 5k^-4 if k = -2?
Answer:
-0.3125
Step-by-step explanation:
5k^-4 when k = -2
~Substitute
5(-2)^-4
~Take the exponent
5(-0.0625)
~Multiply
-0.3125
Best of Luck
Felicia drew a triangle with side lengths that measured 15
cm, 18 cm and 27 cm. To determine if Felicia drew a right
triangle, she can use the equation:
O A. 15+18= 27
O B. 152 + 272 = 182
O C. 15 + 18 = 27
O D. 182 + 152 = 272
Answer:
A
Step-by-step explanation:
Example 1: Marcus buys a varsity jacket from a clothing store in Arlington. The price of the jacket is $80 and the sales tax is 8%. What is the total cost of the jacket?
Answer:
$86.40
80 + 8%= 86.40
Answer:
$86.40..
Step-by-step explanation:
80 + 8%= 86.40
Find the slope of the line that passes through (5,2) and (4,-1)
Answer:
3
Step-by-step explanation:
2 - -1= 3
5-4 = 1
3/1 = 3
PLEASE HELP ASAP!!!!!! i’ll mark brainlest
Answer:b
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
A kilogram is the same as 1,000 grams.
HTH :)
WHATS 3 + 2??? I CANT FIGURE IT OUT. 50 POINTS FOR YOU
Answer:
5
Step-by-step explanation:
Answer:
3+2 is 5
Step-by-step explanation:
Thank you for the points! :)
which equation is equivalent to 3/2x -4y+1=0
Answer:
the fourth option
Step-by-step explanation:
i googled it
Answer:the 2nd to the very bottom one
Step-by-step explanation:
Don’t wanna tell
A club has 800 members.
100 of the members were randomly picked and were asked if the dues should be raised.
6 of the members said that dues should be raised.
Based on these results, about how many members in the club would be expected to say that dues should be raised? HELP
Answer:
48
Step-by-step explanation:
800/100=8.
6/100 said yes. so 6*8 which is 48.
Hope this helps plz hit the crown :D
The next two terms of the sequence 4, 7, 10, 13 are *
Answer:
4, 7, 10, 13, 16, 19
Step-by-step explanation:
The sequence is going up by 3 simply keep adding 3.
You bake cookies for a bake sale. The ratio of chocolate chip cookies to oatmeal cookies is 7 : 5. You bake 15 oatmeal cookies. How many chocolate chip cookies do you bake?
Answer:
21
Step-by-step explanation:
[tex]\frac{7}{5}[/tex] = [tex]\frac{x}{15}[/tex]
x = 21 chocolate chip cookies.
There are 21 chocolate chip cookies do you bake.
What is mean by Ratio?
A ratio indicates how many times one number contain in another number. The ratio of two number is written as x : y, which is equivalent to x/y. Where, x and y are individual amount of two quantities.
Given that;
The ratio of chocolate chip cookies to oatmeal cookies is 7 : 5.
And, You bake 15 oatmeal cookies.
Now,
Since, The ratio of chocolate chip cookies to oatmeal cookies is 7 : 5.
Hence, The amount of chocolate chips = 7x
And, The amount of oatmeal cookies = 5x
Here, You bake 15 oatmeal cookies.
Hence, We get;
The amount of oatmeal cookies = 5x = 15
So, we get;
⇒ 5x = 15
⇒ x = 3
So, The amount of chocolate chips = 7x
= 7 × 3
= 21
Thus, There are 21 chocolate chip cookies do you bake.
Learn more about the ratio visit:
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What is the result when 9x3 + 9x2 + 17x + 10 is divided by 3x + 2?
Answer:
61x over 3
=16? on a graph
Step-by-step explanation:
4 x + 6 < − 6 Help me please
Answer:
x<-3
Step-by-step explanation:
Let's do this step by step:
1) isolate 4x : 4x<-6-6
2) so then we get : 4x<-12
3) isolate x : x< -12/4
WHICH GETS YOU TO: x<-3
Answer:
4x + 6 < -6 = x < −3
The value of x = -2 or greater