Answer:
[tex] {x}^{2} = 144 \\ x = \sqrt{144} \\ x = 12[/tex]
Alex owns a miniature model of a train. The actual train is 14 feet tall and 70 feet long. If Alex's model is 6 inches tall, what is its length, rounded to the nearest inch?.
6 is multiplied by 2 1/3 to get to 14. 70 divided by 2 1/3 is 30. The model of the train is 30 inches long.
15 trig review please help me
Answer:A
Step-by-step explanation:
okay i saw on a video .i see the right won A
2 < x <8
x is an integer.
write down the possible values of x.
Answer:
3, 4, 5, 6, 7
Step-by-step explanation:
Answer
3,4,5,6,7 because they are between 2 and 8
Which of the following is a linear function?
one over three x = y − 3
y = x3 + 2
y = 6x2
y = two over three x
Answer:
[tex]\bold{y = 3x + 2}[/tex]
Step-by-step explanation:
In a linear equation, [tex]y=mx+b[/tex], the "[tex]m[/tex]" is identified as the slope, while the b is where you begin, the coefficient: y-intercept.
Now, with that said, let us look at each option, and see which one matches the linear equation.
Option 1
One over three x = y - 3
[tex]\frac{1}{3}x=y-3[/tex]
As you can see, the [tex]y[/tex] should be in front of the equation. And the [tex]-3[/tex] should be next to [tex]x[/tex].
Option 2
[tex]y = 3x + 2[/tex]
This equation is a linear equation: the [tex]y[/tex] is in the right place, the coefficient is right next to [tex]x[/tex], and where you begin is at the right place. If you look at this equation, and the linear equation, you will notice they both match.
Option 3
[tex]y = 6\times2[/tex]
The equation does not make sense in terms of linear equations, first off all. There is nothing to show it is a linear equation, except from the [tex]y[/tex]. It is the same thing as just adding two numbers and putting an equal sign and [tex]y[/tex] in front of it, which is not a linear equation.
Option 4
y = two over three x
[tex]y = \frac{2}{3}x[/tex]
There is no coefficient in this equation, therefore, it is not a linear equation.
Find the area of this parallelogram,
5.2 cm
7.6 cm
10.8 cm
Answer:
area = base × height
Step-by-step explanation:
area = 10.8×5.2 = 56.16 cm².
1. Given f(x)= 3x -4 and g(x)=-2x + 7 evaluate:
(g ∘ f) (6)
Answer:
-21
Step-by-step explanation:
(gof)(6) = g(f(6))
f(6)=14
g(14)=-21
write an equation of the line in slope-intercept form that passes through (5,-2) and has a slope of -1/3
Answer:
y = - 1/3x - 1/3
Step-by-step explanation:
Slope: - 1/3
y-intercept: -2 - (- 1/3)(5) = - 2 + 5/3 = - 1/3
The original price for the shirt is $30.00. The shirt is on sale for 10% off. What is the sale price of the shirt?
Answer:
$3 off which is $27
Step-by-step explanation:
10% of 30 is 3 so you would subtract 30 - 3
and you get $27
Jeffrey is excited to graduate from high
school. His parents suggest celebrating
with a graduation dinner, so Jeffrey finds
a restaurant that will rent a private room
for $25. The restaurant will also charge
$7.50 to feed each quest.
Write an equation showing how the cost
of Jeffrey's graduation dinner, y, depends
on the number of guests, X.
Do not include dollar signs in the
equation.
Answer:
y=7.5x+25
Step-by-step explanation:
7.5x is the cost per person (average rate of change/slope)
25 is the y-intercept (the amout you start out with
and y is the total cost.
( a+b )^2 = ...........................
Answer:
[tex]a^{2} + 2ab +b^{2}[/tex]
when: A=3, B=4, and C=2 Evaluate: ABC-A
Answer:
21
Step-by-step explanation:
Note that you are multiplying the values of A, B, & C together, and then subtracting the value of A from it. Plug in the corresponding numbers to the corresponding variables:
ABC - A
(3 * 4 * 2) - 3
(12 * 2) - 3
(24) - 3 = 21
21 is your answer.
~
The nth term of a different sequence is 2n + 5
(b) Work out the 6th term of this sequence.
Answer:
17
Step-by-step explanation:
nth term is 2n + 5
so for 6th term n = 6
= 2*6 + 5
= 17
What is the slope on the graph?
Answer:
The slope equals the rise divided by the run: Slope =riserun Slope = rise run .
Step-by-step explanation:
HOPES THIS HELPS!!!
Can someone help me?
Answer:
89 degrees
Step-by-step explanation:
Answer:
89°
Step-by-step explanation:
The sum of all 3 angles in a triangles equals 180. If you add 50 to 41, you get 91. Then, you subtract 91 from 180, getting 89 degrees. Next, you square 89, add 170, subtract 12, add 3,218, subtract 3376, and find square root.
I've been told I have strange ways of finding the answers to mathematical questions.
A lock consists of 4 dials, where each dial has 6 letters. What is the probability of guessing the right combination in one try?
Answer:
Step-by-step explanation:
(1/6)^4
= 1/1296.
Answer:
1/1296
Probability of guessing letter on first try of a dial, 1/6
Equation / 1/6^4
Answer would equal to 1/1296
Please answer right.
Answer:
6.40
Step-by-step explanation:
um i don't understand
Answer:
First we have to find the perimiter of the diagram
3+3+4+2=12
then we multiple by 4 which is 48 since the model is 1/4 the size
48 is the answer D
Hope This Helps!!!
Answer:
48
Step-by-step explanation:
(1/4) in = 1 feet
1 inch = 4 feet
3 in = 3*4 = 12 ft
2 in = 2 *4 = 8
4 in = 4 *4 = 16
Perimeter of actual deck = 12+ 12 + 8 + 16 = 48 ft
plz help 25 pts and ill mark u brainliest
Answer:
if your doing scientific notation then 2.7x10^3 would be the only one correct. if its not scientific notation then 27x10^3 would be more because it would be equivilent to 2700<27000
Step-by-step explanation:
Answer: B
Step-by-step explanation:
10 to the third power is 10*10*10
10*10=100
100*10=1000
2.7*1000=2700
Second Statement
10 to the power of 3 is 10*10*10
10*10=100
100*10=1000
27*1000=27,000
B is the answer
Hope this helped, can i please have brainliest, if not thats alright
Have a Great Day
What is the value of x?
Answer:
the value of x is 6 i believe
Step-by-step explanation:
What is value of x? Value of x is used to consider unknown value. The letter “x” is commonly used in algebra to indicate an unknown value. It is referred to as a “variable” or, in some cases, a “unknown.” In x + 2 = 7, x is a variable. But its value may be determined if we try! A variable need not be “x,” but might be “y,” "w," or any other letter, name, or symbol.
80% of __ = 16
Find the missing number Please help :(
Answer:
20
Step-by-step explanation:
16/4=4
4*5=20
16=4/5 (80%) so 20= 5/5 (100%)
Answer: 20
Step-by-step explanation:
80/100 x Y = 16
80Y/100 = 16/1
Cross multiply
80Y = 1600
Divide both sides by 80
Y = 1600/80
Y = 20
What is the slope of the line through points (−2, 3) and (6, 1)?
Slope = change in y / change in x
Slope = (1 - 3) / 6 - -2)
Slope = -2/8
Simplify for final answer:
Slope = -1/4
Answer:
-0.25
Step-by-step explanation:
Write the coordinates of the vertices after a rotation 90 degrees counterclockwise around the origin
Answer:
B'=(9 ,-1)
c'=(0 ,1)
D'=(9 ,-5)
Step-by-step explanation:
When rotating a point 90 degrees counterclockwise about the origin our point A(x,y) becomes A'(-y,x). In other words, switch x and y and make y negative.
in figure abcd is a parallelogram DE is perpendicular to AB DF perpendicular to BC and angle EDF=60 degree find angles of parallelogram
Answer:
What is the product of −2 1/2 and −3 1/3
Step-by-step explanation:
What is the product of −2 1/2 and −3 1/3
who wants my socai media
Answer:
ok
Step-by-step explanation:
Answer: no body
Step-by-step explanation:
thanks though :)
SOMEONE PLEASE HELP‼️‼️‼️ILL MARK BRAINLYEST WHAT EVER IT IS CALLED PLEASE ‼️‼️‼️
1. Find the value of x in the figure below if GH is parallel to JK.
A. 4 units
B. 9.8 units
C. 6.7 units
D. 5 units
Answer:
D. 5 units
Step-by-step explanation:
The parallel segments divide the slant segments proportionally:
7.5/10.5 = x/7
x = 7(7.5/10.5) = 5 . . . . . multiply by 7
The value of x is 5 units.
_____
If you want to use corresponding sides of similar triangles, you get the same result. ΔIGH ~ ΔIJK
IJ/IG = IK/IH
7/(7+10.5) = x/(x+7.5) . . . . substitute shown values
7(x +7.5) = 17.5x . . . . . . . cross multiply
7(7.5) = 10.5x . . . . . . . . . subtract 7x
x = 7(7.5/10.5) = 5 . . . . . divide by the coefficient of x
Answer:
D 5 units
Step-by-step explanation:
I got it right on the quiz
1) Kyla paid a rental company a one-time fee of $100 plus $25 per day to rent a car. For
how many days did she rent the car if she spent $450?
Answer:
14 days
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
25n+100=450
Step 2: Subtract 100 from both sides.
25n+100−100=450−100
25n=350
Step 3: Divide both sides by 25.
25n/25 =350/25
n=14
Answer:
Two weeks
Step-by-step explanation:
out of these 450, 100 are a flat, and it's 25 times the numer of days. In an equation form, [tex]450 = 100 + 25d[/tex]. The way you solve the equation, you subtract 100 to both sides, and divide by 25 (you can do it in the order you prefer!)
[tex]18 = 4 +d[/tex] or [tex]d = 14[/tex]
12,00 miles; 5% increase
Answer:
12600
Step-by-step explanation:
Estimate the sum of 8.43 + 8.12 + 7.98
Answer:
24.53 is your answer!
Step-by-step explanation:
add all of the numbers from the correct place values.
Express the function graphed on the axes below as a piecewise function.
first off, let's get the equation of each line, now, let's notice they're lines, thus we can just use two points from each and the point-slope form to get it, so let's do so, Check the picture below.
[tex](\stackrel{x_1}{-3}~,~\stackrel{y_1}{0})\qquad(\stackrel{x_2}{-6}~,~\stackrel{y_2}{6})\\\\\\% slope = m\stackrel{slope}{m}\implies\cfrac{\stackrel{rise}{\stackrel{y_2}{6}-\stackrel{y1}{0}}}{\underset{run}{\underset{x_2}{-6}-\underset{x_1}{(-3)}}}\implies \cfrac{6}{-6+3}\implies \cfrac{6}{-3}\implies -2[/tex]
[tex]\begin{array}{|c|ll}\cline{1-1}\textit{point-slope form}\\\cline{1-1}\\y-y_1=m(x-x_1)\\\\\cline{1-1}\end{array}\implies y-\stackrel{y_1}{0}=\stackrel{m}{-2}(x-\stackrel{x_1}{(-3)})\\\\\\y=-2(x+3)\implies \blacktriangleright y = -2x-6 \blacktriangleleft\\\\[-0.35em]\rule{34em}{0.25pt}[/tex]
[tex](\stackrel{x_1}{4}~,~\stackrel{y_1}{-6})\qquad(\stackrel{x_2}{6}~,~\stackrel{y_2}{-9})\\\\\\% slope = m\stackrel{slope}{m}\implies\cfrac{\stackrel{rise}{\stackrel{y_2}{-9}-\stackrel{y1}{(-6)}}}{\underset{run}{\underset{x_2}{6}-\underset{x_1}{4}}}\implies \cfrac{-9+6}{2}\implies \cfrac{-3}{2}[/tex]
[tex]\begin{array}{|c|ll}\cline{1-1}\textit{point-slope form}\\\cline{1-1}\\y-y_1=m(x-x_1)\\\\\cline{1-1}\end{array}\implies y-\stackrel{y_1}{(-6)}=\stackrel{m}{-\cfrac{3}{2}}(x-\stackrel{x_1}{4})\implies y+6=-\cfrac{3}{2}(x-4)\\\\\\y+6=-\cfrac{3x}{2}+6\implies \blacktriangleright y = -\cfrac{3x}{2} \blacktriangleleft[/tex]
now, if we look at the first line, it has a hole when x = -1, however is going upwards to the left otherwise, so we can say the equation includes values to the left of x = -1.
the second equation has a hole when x = 2, so we can say that the equation includes values from x = +2 onwards.
[tex]f(x) = \begin{cases}-2x-6&,~~ x < -1\\[1em]-\cfrac{3x}{2}&,~~x>2\end{cases}[/tex]
help! ILL GIVE BRAINLEST
Answer:
5
Step-by-step explanation:
1/2 is equal to 5/10
i know it's right since 5 is half of ten