Six less than 4 times a number
Answer:
4x-6
Step-by-step explanation:
Six less than four times a number is four times x because times is multiplying and then subtracting six because less means minus (subtraction)
Select the correct answer from the drop-dov
Consider this population data set: 4, 6, 7, 11, 12, 18, 26, 23, 14,, 31, 22, and 12. The values 11, 31, 22, and 12 constitute a random sample drawn from the data set. The sample mean is more than the population mean by
Answer: The sample mean is more than the population mean by 3.5
=======================================================
Explanation:
To get the population mean, first add up all the population values
4+6+7+11+12+18+26+23+14+31+22+12 = 186
Then divide that over 12 as there are 12 values in the population
186/12 = 15.5
The population mean is 15.5
----------
The sample mean is computed the same way
add the values = 11+31+22+12 = 76
Divide the sum by 4 = 76/4 = 19
The sample mean is 19
The sample mean is larger by 19 - 15.5 = 3.5
.9 times what equals 1.5
Answer:
5/3
Step-by-step explanation:
x*0.9=1.5
x=15/9
x=5/3
Lets solve your question step by step:-
Given,
0.9*x = 1.5
0.9x = 1.5
=} 0.9x/0.9 = 1.5/0.9
x = 1.666667
So,
9 times 1.666667 (x) is 1.5
Hope it helps :)
Find the number of possible outcomes. Seven books need to be placed
on a shelf. You randomly arrange the books on the shelf from left to right.
Describe the set of all points of the form (2 y) where y is a real number
Answer:
Following are the answer to this question:
Step-by-step explanation:
In the given-question, the information is missing. first, we declare the missing information, after that we define its solution:
Missing information:
plotting the Points (2, 0), (2, 4), (2, 1), and (2, -1).
solution:
please find the attachment.
In the given attachment file, all the points lie within the same line, which indicates its points, and the set may be interpreted throughout the form of (2,y), or even the points may also be placed on the line x=2.
-9(2+3x) distributive property
Answer: -18 - 27x, or -27x - 18
1. Solution Steps
[tex]-9(2+3x)[/tex]
Use the distributive property to multiply −9 by 2+3x.
[tex]-18-27x[/tex]
Expand
[tex]-27x-18[/tex]
2. Solution Steps
[tex]-9(2+3x)[/tex]
Use the distributive property to multiply −9 by 2+3x.
[tex]-18-27x[/tex]
What is the solution to the inequality below?
X^2>=81
A. x ≤ - 9 or x ≥ 9
Step-by-step explanation:x² ≥ 81
| x | ≥ 9
x ≥ 0 => x ≥ 9 => x ∈ [ 9 ; + oo)
x < 0 => x ≤ - 9 => x ∈ ( -oo ; - 9 ]
x ∈ ( -oo ; - 9 ] ∪ [ 9 ; + oo)
Write the phrase as an algebraic expression. A number plus six and three tenths. PLEASE HEEELP
Answer:
n + 6(3/10)
Step-by-step explanation:
6(3/10) is written as a mixed number
Answer:
x+6.3
Step-by-step explanation:
x+6.3
I'm confused about what the expression is.
Answer:
4(x+y)
Step-by-step explanation:
x+y is one side length and there are 4 side lengths.
Use the discriminant to describe the roots of each equation. Then select the best description.
X^2-4x+4=0
x^2-4x+4=0
now;
x^2-4x=0-4
x^2-4x=-4
x(x-4)=-4
x^2-4x+4
The sum of only negative numbers.
Is it positive or negative
Answer: negative
Step-by-step explanation: Whenever you are adding negative
numbers together, you will always get a negative number.
For example, (-1) + (-1) will give you -2.
In the same way, (-5) + (-4) gives you -9.
Answer: negaitive
When you add a negative plus a negative you always get another negative
Factorise a2 -10a-24
Answer:
(a+2)(a-12)
Step-by-step explanation:
[tex]a^2-10a-24\\\\\mathrm{Break\:the\:expression\:into\:groups}\\=\left(a^2+2a\right)+\left(-12a-24\right)\\\\\mathrm{Factor\:out\:}a\mathrm{\:from\:}a^2+2a\mathrm{:\quad }a\left(a+2\right)\\\\\mathrm{Factor\:out\:}-12\mathrm{\:from\:}-12a-24\mathrm{\\:\quad }-12\left(a+2\right)\\=a\left(a+2\right)-12\left(a+2\right)\\\\\mathrm{Factor\:out\:common\:term\:}a+2\\=\left(a+2\right)\left(a-12\right)[/tex]
Answer:
(a + 2)(a - 12)
Step-by-step explanation:
a^2 - 10a - 24
using splitting method
a^2 - 12a + 2a - 24
taking separate common from both pairs
a(a - 12) + 2(a - 12)
(a + 2)(a - 12)
Line, Line Segment, Ray...
A) are two - dimensional
B) have no dimension
C) are three-dimensional
D) are one dimensional
Answer:
A
Step-by-step explanation:
They are all straight paths with end points but a line is never ending but it is still two dimensional
Answer:
D - Are One dimensional
Step-by-step explanation:
Line , Line segments and Ray's are all one dimensional objects
Simplify -2x+7=15, i need help understanding why it is -4
Answer:
-4
Step-by-step explanation:
Step 1: Subtract 7 from both sides.
−2x+7−7=15−7
−2x=8
Step 2: Divide both sides by -2.
−2x
−2
=
8
−2
x=−4
What is the value of the expression below when z = 2? 4z2 – 3z – 4
Answer:
6Step-by-step explanation:
[tex]4z^2 - 3z - 4\\z =2[/tex]
Substitute 2 for z in the given equation
[tex]4(2)^2 - 3(2) -4\\[/tex]
Follow the PEMDAS order of operations
[tex]\mathrm{Calculate\:exponents}\:\left(2\right)^2\::\quad 4\\=4\cdot \:4-3\left(2\right)-4\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:4\times\:4\::\quad 16\\=16-3\left(2\right)-4\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:3\left(2\right)\::\quad 6\\=16-6-4\\\\\mathrm{Add\:and\:subtract\:\left(left\:to\:right\right)}\:16-6-4\::\quad 6[/tex]
Answer:
Step-by-step explanation:
Plug in z = 2 in the expression
4z² - 3z - 4 = 4*2² - 3*2 -4
= 4*4 - 6 - 4
= 16 - 6 - 4
= 10 - 4
= 6
Which of the following is the set of all real number x such that x-2 < x-4?
If you subtract x from both sides, then you go from
x-2 < x-4
to
-2 < -4
which is a false statement. The value -2 is not smaller than -4. It's the other way around. I recommend looking at a number line to compare the two values.
This means that x-2 < x-4 is never true regardless of what x value you pick. So there are no solutions.
Mr Tom shared $300 between his two sons aged 15 years and 10 years in
the ratio of their ages. Calculate the amount of money each boy received.
Answer:
Son of 15 years $180
Son of 10 years $120
Step-by-step explanation:
15 + 10 = 25
25 300
15 x = 300*15/25
x = 180
25 300
10 x = 300*10/25
x = 120
Son of 15 years $180
Son of 10 years $120
The development of a city over the past twenty
years cost $962,234,534,288,644. What is the value
of the digit 3 in this number
Answer:
The 3 in that longest number I have seen in the world is 30 Billion.
Step-by-step explanation:
Million: 6 places before
Billion: 9 places before
Hope this helps!
Huda evaluated the expression below. Negative 3 (8 minus 5) squared minus (negative 7) = negative 3 (3) squared minus (negative 7) = negative 3 (9) minus (negative 7) = 27 minus (negative 7) = 34. What was Huda's error? Huda evaluated (3) squared incorrectly. Huda found the product of –3 and 9 as positive. Huda subtracted –7 from 27 incorrectly. Huda did not follow the order of operations.
Answer:
Huda found the product of –3 and 9 as positive.
Step-by-step explanation:
Given the expression and result below :
Huda evaluated the expression below. Negative 3 (8 minus 5) squared minus (negative 7) = negative 3 (3) squared minus (negative 7) = negative 3 (9) minus (negative 7) = 27 minus (negative 7) = 34
-3(8 - 5)² - (-7) =
Step 1:
- 3(3)² - (-7)
Step 2:
-3(9) - (-7)
Step 3:
27 - (-7) = 34 (error in the third step)
-3(9) = - 27
Hence,
-27 - (-7) = - 27 + 7 = - 20
Answer:
its B on edge
Step-by-step explanation:
I just took the test
Solve for x.
45+ Go +1) =
2x
Answer:
x= [tex]\frac{1}{2}[/tex]go+23
Step-by-step explanation:
the area of a square is 36 units what is the perimeter?
Area of square = 36 unit²
To Find :Perimeter of square[tex].[/tex]
SoluTion :◈ Side of square :
[tex]:\implies\sf\:Area=(side)^2[/tex]
[tex]:\implies\sf\:36=(side)^2[/tex]
[tex]:\implies\sf\:side=\sqrt{36}[/tex]
[tex]:\implies\bf\:side=6\:unit[/tex]
◈ Perimeter of square :
[tex]:\implies\sf\:perimeter=4\times (side)[/tex]
[tex]:\implies\sf\:perimeter=4\times 6[/tex]
[tex]:\implies\underline{\boxed{\bf{\purple{perimeter=24\:unit}}}}[/tex]
Something that represent today’s culture ( sum that isn’t tech or social media)
It depends on which culture you're looking at to be honest. But in the current environment, one item that is fairly prevalent is the coronavirus facemask. You could say it symbolically represents the idea of trying to stay safe and it represents a new norm (that many may consider strange since people are used to seeing each other's faces).
you and 2 decide to each order a pizza for lunch would you rather
Answer:
My answer to the question is option B
Answer:
hmmmm Option A for me
Step-by-step explanation:
Express the following fraction into a decimal
- 5/9
Answer:
5/9 = 0.5
Step-by-step explanation:
hope it helps leme know if u hab doubts
Which statements are true? Check all that apply
The sum of the angle measures of a triangle is 180°. Two angles of a triangle measure 40°and 60°, so Juan concludes that the third angle measures 80°. What do you notice about the how the conclusions were made from the statement above?
Answer:
Step-by-step explanation:
Third angle = 180 - (40 + 60)
= 180 - 100
= 80°
When you subtract the sum of 40 and 60 from 180, you will get the third angle.
PLSSS HELP Which triangles are similar to triangle A?
Answer:
ΔB
Step-by-step explanation:
ΔA's angles are: 58º, 54º, and 68º
68º is found by 180 - (58 + 54)
ΔB's angles are: 54º, 68º, and 58º
58º is found by 180 - (68 + 54)
ΔA and ΔB have the same angles, therefore they are similar triangles
Answer:
triangle b
Step-by-step explanation:
i measured
A new car costs $8000 at full price. With a sales tax of 5.75%, how much will the car cost in total?
Answer:
$8460
Step-by-step explanation:
So for this problem we will use the base price of $8000 and add the additional cost of the 5.75% to find the total cost for the car.
So, to find the 5.75%, we simply multiply 8000 by .0575 to get 460.
So 8000 + 460 = 8460.
Thus, the total price of the car would be $8460.
Cheers.
Answer: $8,460
Step-by-step explanation: If you multiply the cost of the car by the sales tax you get your answer. Hope this helps!
[tex]\sqrt{24n^3}[/tex] (simplify radical) please show work
Answer:
The answer is
[tex]2n \sqrt{6n} [/tex]Step-by-step explanation:
[tex] \sqrt{24 {n}^{3} } [/tex]First of all factor out the perfect square out.
In this question the perfect squares are 4 and x²
So we have
[tex] \sqrt{4 \times {n}^{2} \times 6n} [/tex]Separate the radicals
That's
[tex] \sqrt{4} \times \sqrt{ {n}^{2} } \times \sqrt{6n} [/tex]Simplify
[tex] \sqrt{4} = 2 \\ \sqrt{ {n}^{2} } = n[/tex]So we have
[tex]2 \times n \times \sqrt{6n} [/tex]We have the final answer as
[tex]2n \sqrt{6n} [/tex]Hope this helps
Answer:
[tex]2n \sqrt{6n} [/tex]
Step-by-step explanation:
[tex] \sqrt{24n {}^{3} } [/tex]
Factor out the perfect square ⬜[tex] \sqrt{2 {}^{2} } \times 6 {n}^{3} [/tex]
[tex] \sqrt{ {2}^{2} } \times 6n {}^{2} \times n[/tex]
Please the square root is for the entire formula ⬆️⬆️⬆️the root of the product is equals to the root of each Factor[tex] \sqrt{2 {}^{2} } \sqrt{n {}^{2} } \sqrt{6n} [/tex]
reduce the index of the radical and exponent with 2[tex]2 \sqrt{n {}^{2} } \sqrt{6n} [/tex]
[tex]2n \sqrt{6n} [/tex]
Solution2n square root 6n
[tex]2n \sqrt{6n} [/tex]
Hope this helps.....
X² + 9x + 4 = FACTORISE
Answer:
[tex]$-\frac{1}{4} (-2x-9+\sqrt{65})(2x+9+\sqrt{65})$[/tex]
Step-by-step explanation:
We have a second-degree polynomial:
I will find the roots (y = 0) completing the square:
[tex]$x^2+9x+\frac{81}{4}-\frac{81}{4}+4=0$[/tex]
[tex]$\left(x+\frac{9}{2} \right)^2 -\frac{81}{4} +4 =0$[/tex]
[tex]$\left(x+\frac{9}{2} \right)^2 -\frac{81}{4} +\frac{16}{4} =0$[/tex]
[tex]$\left(x+\frac{9}{2} \right)^2 -\frac{65}{4} =0$[/tex]
[tex]$\left(x+\frac{9}{2} \right)^2 =\frac{65}{4} $[/tex]
[tex]$\left(x+\frac{9}{2} \right)^2 =\pm \sqrt{\frac{65}{4} } $[/tex]
[tex]$x =-\frac{9}{2} \pm \frac{\sqrt{65} }{2} $[/tex]
[tex]$x =\frac{-9 \pm \sqrt{65} }{2} $[/tex]
[tex]$\boxed{x_1 =\frac{-9 + \sqrt{65} }{2}} $[/tex]
[tex]$\boxed{x_2 =\frac{-9 - \sqrt{65} }{2}} $[/tex]