Answer:
20 games
Step-by-step explanation:
Lets work backwards; *Adding what he gave away or lost*
-Alex started with 16 video games
-Add the games gave to his brother (+2)
-Add the games he sold (+3)
-The number is 3/4 of his games
-Subtract the games he traded with hector (-1/4)
Equation: 16+2+3-6= 3/4 X (variable) *You can choose other than X*
21-6 = 15
15 = 3/4
Take the reciprical of 3/4 which is 4/3 and multiply it by both sides
4/3 x 15 = 3/4 x 4/3
4/3 X 15 = 20!
ALEX STARTED WITH 20 GAMES!
The length, width, and height of a rectangular prism can be represented by the expression (x + 3), (x + 7) and (x - 1). write an expression to represent the surface area of the prism
Answer:
A=2wl+2lh+2hw
A=2(x+7)(x+3)+2(x+3)(x-1)+2(x-1)(x+7)
A=2(x^2+7x+3x+21)+2(x^2-x+3x-3)+2(x^2+7x-x-7)
A=2(x^2+10x+21)+2(x^2-2x-3)+2(x^2+6x-7)
Answer:
6x²+36x+22
Step-by-step explanation:
Surface Area = 2(wl + hl + wh)
Length = (x+3)
Width = (x+7)
Height = (x-1)
Surface Area = 2((x+7)(x+3) + (x-1)(x+3) + (x+7)(x-1))
Then simplify
2((x+7)(x+3)+(x−1)(x+3)+(x+7)(x−1))
=(2)((x+7)(x+3)+(x−1)(x+3)+(x+7)(x−1))
=(2)((x+7)(x+3))+(2)((x−1)(x+3))+(2)((x+7)(x−1))
=2x²+20x+42+2x²+4x−6+2x²+12x−14
=6x²+36x+22
The equation y = 8.1x models the relationship between the number of hours Alexander works, x, and the dollar amount he earns, y. Which is the graph of the equation y = 8.1x?
Answer:
its B
Step-by-step explanation:
the second graph
Answer: B
Step-by-step explanation:
Rock bands often stack their speakers in an array. One teen banda
has 24 speakers. They stack them at least 2 high, but no taller than
8 high. What are all the different arrays they can make?
8 high. What are all the different arrays they can make?
Answer:
2*12
3*8
4*6
6*4
8*3
Step-by-step explanation:
Find the perimeter of the given figure, round to the nearest tenth
Answer:
2√424 + 62 ≈ 103.1825205639 ≈ 103.2 units
Explanation:
Given the two baselengths, and the perpendicular height of the trapezoid, you can actually find the perimeter through the pythangorean theorem because the perpendicular height or height that forms a right or 90 degree angle makes a right triangle(2 be exact because this is an isoceles trapezoid which has two adjacent right triangles).
This is true of the trapezoid is icosceles.
Answer:
You cannot find the perimeter with numbers given.
Step-by-step explanation:
The top length, base length, and height are not sufficient to determine the perimeter of a trapezoid
Help me solve this problem please
Answer:
the answer is x= -3
y = -14
-3y + 8x = 36
6x + y = -21
Answer:
x=−27/26
and y=−192/13
Step-by-step explanation:
6x+y=−21;8x−3y=36
Step: Solve6x+y=−21for y:
6x+y=−21
6x+y+−6x=−21+−6x(Add -6x to both sides)
y=−6x−21
Step: Substitute−6x−21foryin8x−3y=36:
8x−3y=36
8x−3(−6x−21)=36
26x+63=36(Simplify both sides of the equation)
26x+63+−63=36+−63(Add -63 to both sides)
26x=−27
26x
26
=
−27
26
(Divide both sides by 26)
Solve for x
-.02x = 1.6
Answer:
-8
Step-by-step explanation:
Please help! Will give brainliest!
Answer:
Step-by-step explanation:
Kayla bought 2 books for $8.95 each, how much change would she get from a $20 bill?
Answer:
8.95 + 8.95 = 17.9
20 - 17.9
= $2.1
Two functions are shown below. f(x) = 6x + 3 g(x) = 3x - 2 What is the product of f(3) and g(- 4) B. 210 -210 294
Answer:
f(3)=21
g(-4)=-14
Step-by-step explanation:
Hope this helps
what does congruent mean in geomatry?
Answer:
Congruent means same shape and same size. So congruent has to do with comparing two figures, and equivalent means two expressions are equal. So to say two line segments are congruent relates to the measures of the two lines are equal. Comment on David Severin's post “Congruent means same shape and same size.
Step-by-step explanation:
Answer:B
Step-by-step explanation:
Your Welcome;)
IM GIVING BRAINLIEST!!
What two integers between -100 and -20 could be divided to equal a number close to 0?
Find the sine of J. Write your answer in rationalized form
Answer:
[tex]sin\:(J)\:=\:\frac{4\sqrt{5}}{7\sqrt{2}}[/tex]
Step-by-step explanation:
As we know that
sinФ = opposite ÷ hypotenuse
Given the triangle with
Ф = JThe opposite of j is [tex]4\sqrt{5}[/tex]The length of the hypotenuse of a right triangle can be calculated as:
[tex]c=\sqrt{a^2+b^2}[/tex]
[tex]c=\sqrt{\left(3\sqrt{2}\right)^2+\left(4\sqrt{5}\right)^2}[/tex]
[tex]c=\sqrt{3^2\cdot \:2+4^2\cdot \:5}[/tex]
[tex]c=\sqrt{18+80}[/tex]
[tex]c=\sqrt{98}[/tex]
[tex]c=\sqrt{7^2\cdot \:2}[/tex]
[tex]c=\sqrt{2}\sqrt{7^2}[/tex]
[tex]c=7\sqrt{2}[/tex]
so
sinФ = opposite ÷ hypotenuse
substituting the values Ф = J, opposite = [tex]\sqrt{5}[/tex], hypotenuse = [tex]c=7\sqrt{2}[/tex]
[tex]sin\:(J)\:=\:\frac{4\sqrt{5}}{7\sqrt{2}}[/tex]
Therefore,
[tex]sin\:(J)\:=\:\frac{4\sqrt{5}}{7\sqrt{2}}[/tex]
can somone please help me with this, I will give brainliest.
Graph the line that represents a proportional relationship between d and t with the property that an increase of 3 units in t corresponds to an increase of 8 units in d.
What is the unit rate of change of d with respect to t? (that is, a change of 1 unit in t will correspond to a change of how many units in d?)
The unit rate of change is blank.
Graph the relationship.
Answer:
3/8 I believe.
Step-by-step explanation:
which of the following relations or graphs are functions
Answer:
Step-by-step explanation:
The functions are:
(a), (c), (d), (e).
Relations may or may not represent a function.
The relations that are functions are (a), (c), (d), (e)
Graph (a) shows a linear relationship, and all linear relations are functions.
Graph (b) fails the vertical line test, because an x value corresponds to multiple y values; so graph (b) is not a function.
Similarly, ordered pair (f) is not a function because an x value corresponds to multiple y values
Other relations (c), (d) and (e) are functions
Read more about relations and functions at:
https://brainly.com/question/10889102
List the first 4 terms of a geometric sequence with a first term of 2 and a common ratio of 5.
I have no clue even where to start. The question after that is the same, except the first term is 4 and the common ratio is 4.
Answer:
pohujnkmhugyfdtr
Step-by-step explanation:
The first 4 terms of the geometric sequence with a first term of 2 and a common ratio of 5 are 2, 10, 50, 250
using the geometric sequence formula,
aₙ = arⁿ⁻¹where
a = first term = 2
r = common ratio = 5
let find the remaining 3 terms
The 2nd term can be found below
a₂ = 2 × 5²⁻¹ = 2 × 5 = 10The 3rd term can be found below
a₃ = 2 × 5³⁻¹ = 2 × 25 = 50The 4th term can be found as follows
aₙ = 2 × 5⁴⁻¹ = 2 × 125 = 250Therefore, the first 4 terms are 2, 10, 50, 250.
read more: https://brainly.com/question/19799925?referrer=searchResults
2/9 • 2/3 what is the answer
Answer:
4/27
Step-by-step explanation:
Vanessa earns a base salary of $400.00 every week with an additional %5, percent commission on everything she sells. Vanessa sold $1650.00 worth of items last week. What was Vanessa's total pay last week?
Answer:
$482.50
Step-by-step explanation:
Base salary: $400
5% of 1,650 is 82.50
.05 x 1,650 = 82.50
Commission : $82.50
Equation: 400 + 82.50 = $482.50
Warm-Up: Solve each equation for x.
1. x + 5 = 15
Answer:
x = 10
Step-by-step explanation:
x + 5 = 15
x = 15 - 5
x = 10
Thus, x = 10
-TheUnknownScientist
(2a + 3)^2
– (2a – 3)^2
.
Answer:
24a
Step-by-step explanation:
please answer seriously thanks !! will give brainliest
Answer:
Step-by-step explanation:
21) CD - chord (segment)
22)FG - line
23) EC - segment - diameter
24) AB - segment - radius
25) H - Point
26) A - Point
There are 18 marbles in a box. Six of the marbles are red and four of the marbles are blue.
What is the probability that a randomly selected marble will not be blue or red?
Answer:
4/9 ..................
PLEASE HELP ME!!!!!!!!!
x/30 = 150/100
Answer: 45
Step-by-step explanation:
someone help plz plz plz plz
Answer:
slope is -55 balance decreases by $55 each month
Step-by-step explanation:
solve for slope using slope formula:
(620-895)/(6-1) = -275/5 = -55
decreases by $55 since that's the slope
I need some help plz
Answer:
i can't see the equation because of light pleas take again another pic
Answer:
B
Step-by-step explanation:
Classify the sequence {an) = {10,4,8/5,16/25,...} as arithmetic, geometric, or neither. If there is not enough information to classify the sequence, chose not enough information.
-
-
-
A. arithmetic
B. geometric
C. neither
D. not enough information
It is a geometric series.
The ratio of the second to first term is= [tex]\frac{4}{10}=\frac{2}{5}[/tex]
The ratio of the third to second term is= [tex]\frac{\left(\frac{8}{5}\right)}{4}=\frac{2}{5}[/tex]
The ratio of the fourth to third term is=[tex]\frac{\left(\frac{16}{25}\right)}{\left(\frac{8}{5}\right)}=\frac{2}{5}[/tex]
Since the common ratios are same so it is a geometric series.
Learn more: https://brainly.com/question/8806877
how does the percent equation relate to proportional quantities?
Answer:
Step-by-step explanation:
Use cross product to determine if the two ratios form a proportion. Here we can see that 2/16 and 5/40 are proportions since their cross products are equal. Percent means hundredths or per hundred and is written with the symbol, %. Percent is a ratio were we compare numbers to 100 which means that 1% is 1/100.
Answer:
The proportion is a general case of percentage.
Step-by-step explanation:
Proportion is a general case of percentage.
It describes how much of the total a particular sample is.
For example, if a pie contains eight slices and you have five, the proportion is 5/8.
You have a total of five out of eight.
A percent (the number of parts out of 100) is a special case of proportion where the denominator (“whole”) equals 100 parts.
I suspect that percentages were created to allow a normalized comparison of proportions when the total number of parts was not the same.
Imagine a small pizza with 6 slices and a large pizza with 8 slices.
If Tom got 4 from the first and Ram got 5 from the second, it is not immediately clear who got more from the second.
Converting 4/6 and 5/8 to percentages (66.7 and 62.5) allows you to see when the denominator equals who got relatively "more".
Furthermore, I suspect that 100 was used because we live in a 10-base world (we have 10 fingers, which makes it natural).
4x + (-3) = 5x + 3?????
Hi there! :)
[tex]\large\boxed{x = -6}[/tex]
Solve for x:
4x + (-3) = 5x + 3
Adding a negative number is simply subtracting, therefore:
4x - 3 = 5x + 3
Subtract 4x from both sides:
4x - 4x - 3 = 5x - 4x + 3
-3 = x + 3
Subtract 3 from both sides:
-3 - 3 = x + 3 - 3
-6 = x
Answer:
[tex]x=-6[/tex]
Step-by-step explanation:
Isolate the variable.
[tex]4x+(-3)=5x+3[/tex]
[tex]4x=5x+6[/tex]
[tex]0=x+6[/tex]
[tex]x=-6[/tex]
Hope this helps!
Please help!! I've attached a picture of the problem
Answer: BC=8 units
Step-by-step explanation:
So in this figure, this triangle, that is a parallelogram named DFCE , and one of their property three yeti you add learn you learned is that a parallelogram has like rectangle two sides per two that are parallel and have the same measure ( but you can also use the little lines that show who is the same as who ) in this one you can write an equality: CE=FD=4. Then there is the same two lines on the EB segment so EB=4 . Then we can write that BC= BE + EC
BC= 4+4
BC= 8 units
I’m not English so I tried explaining as simple as possible sorry if you didn’t understand :/
Question 1
Which point could be removed in order to make the relation a function?
{(-4,3), (-5, 6), (1, 0),(-4,5), (9,5), (0, -7)}
Answer:
Either (-4, 3) or (-4, 5).
Step-by-step explanation:
A function is a relation when each input has exactly one output. The inputs must not repeat in a function.
In the relation given, the input '-4' repeats.
{(-4,3), (-5, 6), (1, 0),(-4,5), (9,5), (0, -7)}
If we remove either (-4, 3) or (-4, 5), it would make the relation a function.
Hope this helps.