Answer:
y=1; x=2
Step-by-step explanation:
Substitution:
x=2y
2x+5y=9
=> if x=2y, plug in the x value into other equation, so
----------------------------------------------------------------------------
2(2y)+5y=9
4y+5y=9
9y=9
y=1
You have the Y value, so now solve for X
-----------------------------------------------------------------------
plug in y value to x=2y
so x=2(1)
x=2
how many 5ths are in 3 3/5
Answer:
18
Step-by-step explanation:
3 3/5 = 18/5
solve the equation b - 7 - 6 = 15 + 5b
Answer:
b = -7
Step-by-step explanation:
b - 7 - 6 = 15 + 5b
b - 13 = 15 + 5b
4b = -28
b = -7
Write a linear equation in slope intercept form using the given point and slope.
(6,-6); slope = 2/3
Answer:
2/3x-10
Step-by-step explanation:
y=mx+b
y=2/3x+b
Now, what about b, the y-intercept?
To find b, think about what your (x,y) point means:
(6,-6). When x of the line is 6, y of the line must be -6.
Because you said the line passes through this point, right?
Now, look at our line's equation so far: . b is what we want, the 2/3 is already set and x and y are just two "free variables" sitting there. We can plug anything we want in for x and y here, but we want the equation for the line that specfically passes through the the point (6,-6).
So, why not plug in for x the number 6 and for y the number -6? This will allow us to solve for b for the particular line that passes through the point you gave!.
(6,-6). y=mx+b or -6=2/3 × 6+b, or solving for b: b=-6-(2/3)(6). b=-10.
so, y=2/3x-10
Resuelve usando el método de sustitución o el de eliminación. Para un juego de baloncesto se vendieron 1,850 boletos. Se recaudo un total de $ 8,800. Si los boletos de niños cuestan $ 4 y los de adultos cuestan $ 6. ¿Cuántos boletos de cada clase se vendieron?
Answer:
Se vendieron 700 boletos para adultos y 1,150 boletos para niños.
Step-by-step explanation:
Primero tenemos que definir dos variables:
x = número de boletos de niños vendidos
y = número de boletos de adultos vendidos.
Entonces podemos escribir la recaudación total como:
x*$4 + y*$6
Y sabemos que la recaudación total fue $8,800, entonces:
x*$4 + y*$6 = $8,800
También sabemos que se vendieron 1,850 boletos, entonces:
x + y = 1,850
Entonces tenemos el sistema de ecuaciones:
x*$4 + y*$6 = $8,800
x + y = 1,850
En este caso podemos utilizar el método de sustitución, para ello primero debemos aislar una de las variables en una de las ecuaciones.
Si aislamos x en la segunda ecuación tenemos:
x = 1,850 - y
Ahora podemos sustituir esto en la otra ecuación para obtener:
(1,850 - y)*$4 + y*$6 = $8,800
Ahora podemos resolver esto para y.
$7,400 - y*$4 + y*$6 = $8,800
y*$2 = $8,800 - $7,400 = $1,400
y = $1,400/$2 = 700
Entonces se vendieron 700 boletos para adultos.
Ahora podemos usar la ecuación x = 1,850 - y para obtener el valor de x.
x = 1,850 - y
x = 1,850 - 700 = 1,150
Se vendieron 1,150 boletos para niños.
which expression is equal to 24x^2-22x+5
Answer: (12x−5)(2x−1)
Step-by-step explanation: Hope this help :D
Answer:
24(x^2)-22x+5
=24(x^2)-(12+10)x+5
=24(x^2)-12x-10x+5
=12x(2x-1)-5(2x-1)
=(2x-1)(12x-5)
what is the negative solution to this equation? 4x^2+12x=135
Answer:
[tex]-\frac{15}{2}[/tex]
Step-by-step explanation:
[tex]\mathrm{Subtract\:}135\mathrm{\:from\:both\:sides}[/tex]
[tex]4x^2+12x-135=135-135[/tex]
[tex]\mathrm{Simplify}[/tex]
[tex]4x^2+12x-135=0[/tex]
[tex]x1, 2=−b±√b2−4ac2a For a=4, b=12, c=−135x1, 2=−12±√122−4· 4(−135)2· 4[/tex]
take the difference of 7x² + 9 and 2x² -2x from the sum of 5x² + 4x + 7 and 2 - x.
Answer:
bro i am not smart enough for this
Jenny bought scrapbooking supplies for $70.75. She paid $5.66 in sales tax. What was the sales tax rate on the supplies? If necessary, round your answer to the nearest tenth.
Answer:
8%
Step-by-step explanation:
At your full-service. 500 room hotel, typically, 1/4 of the guests will request
room service per day. How many room service calls will likely be received in
the next 7 days?
a.850
b.875
c.900
d.925
A table of values for the cost of a phone plan in terms of the time spent on the phone is shown below.
Time (minutes) Cost ($)
20 17.95
30 19.45
60 23.95
I really need help Please and thank you
la B s la correcta por que es el que esta mas serca :)
Simplify: –3(y + 2)2 – 5 + 6y
What is the simplified product in standard form?
y2 +
y +
- 17 woule be the correct answer for the equation being simplified
Answer:
For edge
Step-by-step explanation:
The first one is -3
The second one is -6
The last one is -17
Pls help me i will give u brainlist
Answer:
y < or= -3/2
Step-by-step explanation:
Answer:
< or= -3/2
Step-by-step explanation:
How does 5x + 15 = 45
HELP PLZ
Answer:
When finding these problems we always have to do the opposite of the operation shown.
In this case its:
5x + 15 = 45
Subtract 15 from both sides (we start off with constants and numbers that are being shown) The reason why its subtraction is because since your adding 15 to 5x the opposite of that is subtraction so use the number shown by itself and subtract it from both sides.
5x = 30
Divide by 5 on both sides since the opposite of 5x is division (only use the number that is shown) We have to get rid of all the numbers on the left.
therefore you'll be left with:
X = 6
Answer:
X=6
Step-by-step explanation:
5x+15=45
5x=45-15
5x=30,divide both sides by 5 to get x
x=6
1. the area of a circle is 132.7 square inches. find the radius. round to the nearest tenth
2. in terms of pi, find the area of a 120 degree sector in a circle with a 6m radius
Answer:
no ):(
Step-by-step explanation:
Answer:
1. r ≈ 6.5in
2. 132
Step-by-step explanation:
1. A=πr2
Solving for r
r=A
π=132.7
π≈6.49921 in
2. = 120°/ 360° x 22/7 x 6²
= 1/3 x 22/7 x 6 x 6
= 22 x 6 x 6 / 7 x 3
= 22 x 6
= 462
Can you please solve for x?
Answer:
The measurement of angle L is given by the expression 180° – 130°. So, angle L measures 50°.
Step-by-step explanation:
Mrs. Phillips has some cans of peas, beans, corn, and carrots without labels. When a can is chosen randomly, the probability of picking a can of peas is 110, a can of beans is 310, and a can of corn is 12. What is the probability of picking a can of carrots? Select ALL that apply.
1/10
1/5
9/10
10%
20%
90%
Answer:
i think it is 20 percent
Step-by-step explanation:
Disinvitedrkeiffxisivisosobo cisibibisihittieigiiigigisiibidcisividbisiAriii
Answer:
um that's veryyy creepy.....
if y varies inversely as x, and y =35 when x =14, find x when y =15.
Answer:
[tex]x = 32 \frac{2}{3} [/tex]
Step-by-step explanation:
[tex]y = \frac{k}{x} ,where \: k \: is \: a \: constant.[/tex]
Let's find the value of k first.
When y= 35, x= 14,
[tex]35 = \frac{k}{14} [/tex]
k= 14(35)
k= 490
Substitute the value of k into the equation:
[tex]y = \frac{490}{x} [/tex]
When y= 15,
[tex]15 = \frac{490}{x} [/tex]
15x= 490
x= 490 ÷15
[tex]x = 32 \frac{2}{3} [/tex]
Evaluate 5+x; if x=7
Answer:
12
Step-by-step explanation:
Determine the area of the following trapezoids.
(Hint): A = 1/2(b1 + b2)(h)
Solve the inequality $-4(x + 4) > x + 7.$ Give your answer as an interval.
Answer:
x < -4.6
Step-by-step explanation:
-4(x + 4) > x + 7
-4x - 16 > x + 7
-4x - x > 7 + 16
-5x > 23 (When we divide by a negative number, we flip the sign)
5x < -23
x < -4.6
what is the average rate of change of the function f(x) over the interval [1,3] rounded to the nearest whole number f(x)=6(2.5)
Answer:
[f(1) - f(3)] / [1–3]
Step-by-step explanation:
Formula
f(x) = 6(2.5)
How to find
The average rate of change over the interval [a,b], or the secant line between the points a and b on the function f(x), is [f(a) - f(b)]/[a-b]. So, substitute a for 1 and b for 3, and you get [f(1) - f(3)] / [1–3]. The quotient of that is your average rate of change.
Having a wife is monogamy. Having two wives is bigotry. Having three wives is ______________.
Answer:
polygamy
Step-by-step explanation:
Answer:
polygamy :)
Explanation:
HELPPPP
find the perimeter of the parallelogram!!!
Answer:
76ft.
Step-by-step explanation:
P = 2L +2H
P = 2(17) + 2(21)
P = 34 + 42
P = 76
Answer:
76 ft
Step-by-step explanation:
(21 x 2) + (17 x 2) = 42 + 34 = 76 ft
pls help
Sasha had to run 1/3 of a mile. She decided to walk, jog, and run the 1/3 mile, in equal parts. What fraction of the mile will she run?
9
3/3
3/9
1/9
Answer:
Fraction Sasha run = 1/9
Step-by-step explanation:
Given:
Sasha had run = 1/3 mile
Total part [Walk , jog , run] = 3 parts
Find:
Fraction Sasha run
Computation:
Fraction Sasha run = Total mile Sasha run x [1/3]
Fraction Sasha run = [1/3] x [1/3]
Fraction Sasha run = 1/9
Please help meeeeeeeeeee!
Answer this question to get marked as brainliest!!!!
Answer:
Diameter is the second option
Radius is the first option
Circumference is the third option
Area is the sixth option.
Step-by-step explanation:
Diameter is the distance between two circles from one end to another.
Radius is from the center to any part of the circle
To find cirumfrnce it’s diameter*π
To find area is πr^2 or in this case π*radius*radius
HELP PLEASE ILL GIVE BRAINLIEST
Answer:
y=3x+3
Step-by-step explanation:
First find put the intersect point at the end then find slope.
easy
Can anyone answer this?
Step-by-step explanation:
a) First we will convert 150km/hr to m/s.
[tex] \frac{150km}{1hr} = \frac{(150 \times 1000)m}{(1 \times 60)s} \\ = \frac{150000m}{60s} \\ = 2500m \: per \: second[/tex]
=2500m/s, which is the initial speed of the plane.
b)Final Speed of plane = Speed when it stopped.
= 0m/s.
c)Time taken to stop = 3 seconds.
d)Using the kinematic equation,
v = u + at,
where v = Final Speed = 0m/s
u = Initial Speed = 2500m/s
a = acceleration
t = time taken = 3 seconds
Substitute v, u and t to find a.
[tex]0 = 2500 + 3a \\ 3a = - 2500 \\ a = - 2500 \div 3 \\ = - 833 \frac{1}{3} \frac{m}{ {s}^{2} } [/tex]