Answer: that the solution is true
Step-by-step explanation: if you get something like 10=10 it’s true but if you get like 4= 7 it’s false
please help
4x+y=-1
-5x-2y=-4
Answer: ( -2, 7 )
Step-by-step explanation:
Solve 4x + y = -1 for y:
Add -4 to both sides:
4x + y + -4 = -1 + -4
y = -4x - 1
Now plug -4x -1 in the other equation with y:
-5x - 2 ( -4x -1 ) = -4
3x + 2 = -4
Add -2 to both sides:
3x + 2 - 2 = -4 + -2
3x = -6
Now divide both by 3:
3x/3 = -6/3
x = -2
Now plug in -2 in the first equation with x:
y = - 4 ( -2 ) - 1
y = 7
Bill tiene un trabajo a tiempo parcial y le pagan cada hora la misma cantidad. Cada hora que trabaja aparta $6 para dárselos a su mamá. Bill trabaja 3 horas al día y la cantidad total con que se queda cada día es $24. ¿Cuánto le pagan cada hora?
Answer:
A Bill le pagan $14 cada hora.
Step-by-step explanation:
Para conocer la cantidad que a Bill le pagan cada hora, se define una ecuación.
Una ecuación es la igualdad existente entre dos expresiones algebraicas conectadas a través del signo de igualdad en la que figuran uno o varios valores desconocidos, llamadas incógnitas, además de ciertos datos conocidos. Es decir, una ecuación se define como una igualdad establecida entre dos expresiones, en la cual puede haber una o más incógnitas que deben ser resueltas.
En este caso, es conveniente definir la siguiente incógnita:
x: cantidad que le pagan a Bill cada horaSi cada hora que trabaja Bill aparta $6 para dárselos a su mamá, entonces cada hora recibirá: x - 6
Bill trabaja 3 horas al día, por lo que en ese día recibirá 3horas*(x-6). Y si la cantidad total con que se queda cada día es $24, entonces la ecuación a resolver será:
3*(x -6)= 24
Resolviendo, obtienes:
3*x - 3*6= 24
3*x - 18= 24
3*x= 24 +18
3*x= 42
x= 42÷ 3
x= 14
Entonces, a Bill le pagan $14 cada hora.
Car A travels 20 mph faster than Car B. In the same time that Car A travels 208 mi, Car B travels 156 mi. Find their speeds. The speed of Car A is and the speed of Car B
Step-by-step explanation:
Assuming the speed of car B to be x and the speed of car A to be x+20
156 = 208
x. x+20
156(x+20)= 208x
156x+3120=208x
3120=208x-156x
3120=52x
x=60
The speed of car A is (x)= 60
The speed of car B is(x+20)= 80
Answer:
[tex]\huge\colorbox{red}{Car\: A=80}\colorbox{blue}{Car B=60}[/tex]
Step-by-step explanation:
to understand thisyou need to know about:equationPEMDASlet's solve:let the speed of car A be A
let the speed of car B be B
according to the first condition:
[tex]\quad A=B+20[/tex]
according to the second condition:
[tex]\quad 156(A)=208B[/tex]
[tex]\text{substitute the value of A into the equation:}\\ \sf \implies 156(B+20)=208(B)[/tex][tex]\sf distribute:\\ \implies 156B+3120=208B[/tex][tex] \sf \: substract\: 156B \: from \: both \: sides : \\ \implies \: 156 B -156 B + 3120 = 208 B - 156 B \\ \implies \: 3120 = 52 B[/tex][tex] \sf divide \: both \: sides \: by \: 52 : \\ \implies \frac{52B}{52} = \frac{3210}{52} \\ \therefore \: B = 60[/tex]therefore
[tex]\text{the speed of car A is 60+20=80}[/tex]
A kindergarten class has 9 girls and 11 boys in the class what percent of the class are girls
Answer:
9 1/11%
Step-by-step explanation:
Hope this helps :)
3/4( x + 8 )=9 Solve for x: x=
Answer:
4
Step-by-step explanation:
Multiply 4/3 to both sides to cancel out the 3/4 on the left.
Next, subtract 8 from both sides to cancel out the 8 on the left.
This should result in the equation x = 4!
Answer:
x = 4
Step-by-step explanation:
3/4 times x = 3/4x
3/4 times 8 = 6
9 - 6 = 3
3 / (3/4) = 4
I hope this helps :)
Determine the value of n that makes a system of equations with a solution that has a y-value of 7.
5x+6y=57; 2x+ny=34
Answer:
Does that help in any sort of way?
Step-by-step explanation:
List all of the solutions.
n=ay−value=7=5x+6y=57=2x+ny=34=
UM, math question on area
Answer:
whats the question
Step-by-step explanation:
Answer:
multiply width and length, for rectangles, parallelograms, and rhombuses
If a triangle divide by two
if a trapezoid, take the average of the two length and multiply by height
hope this helps
comment if you need calculation for the area of other shapes!
please help me it is timed and i am running outta time
Answer:
In ∆RST and ∆XYZ
RS=YZ(S)
angle RST=angle XYZ(A)
ST=YZ(S)
hence ∆RST ≠~∆XYZ
Ayuda es para un examen
Is (1, 2) a solution of 6x - y > 3?
Choose 1 answer:
А
Yes
B
No
Answer:
Yes
Step-by-step explanation:
6x-y>3 (1,2)
6(1)-2>3
6-2>3
4>3
Ashley has x dollars. She spends $23.50 on a new top. She decides to keep 2/5 of what she has left, which is $13.80. How many dollars did Ashley have originally?
Answer:
23.50 + 13.8+ 37.3
Hope this helps!
Step-by-step explanation:
Answer:
She originally had $58.
Step-by-step explanation:
I’ll love u forever if u help with this ASAP PLZZZZ what are at least 3 non examples of speed and also for velocity plzzzzz
Answer:
acceleration, measurement of the mass, the volume. (non examples of speed)
Step-by-step explanation:
1/6 divided 3, 3 divided 1/6
Answer:
1. 0.555555556
2. 18
Step-by-step explanation:
Zacharias Dase 's calculating skills were made famous by Crelle's Journal in 1844. Dase produced a table of factors of all numbers between 7,000,000 and 10,000,000. He listed 7,022,500 as a perfect square.What is the square root of 7,022,500?
Answer:
2,650
Step-by-step explanation:
can anyone help??? will give best answer brainliest!!
Answer:
5xy = 2
Step-by-step explanation:
This is the only one that has two (x & y) letters/integers on one single number.
what are three ratios that are equivalent to 6/7
14 and 21 and 18
is three of them
Answer: 6/7 (2/2) = 12/14
(3/3) = 18/21
(4/4) = 24/28
Helppp plzzz I will mark brainliestttt
Answer:
23.8 km
Step-by-step explanation:
factories the following: x^2 - 3x + 2
Answer:
(x-2)(x-1)
Step-by-step explanation:
Answer:
(x-2)(x-1)
Step-by-step explanation:
[tex]x^{2} -3x+2\\\\(x-2)(x-1)[/tex]
Yesenia buys milk to make milkshakes for all her friends. She buys 1 quart of milk and
1/2 gallon of milk. How many cups of milk does she buy?
Answer:
12 CUPSExplanation:
1 quart = 4 cups
1 gallon = 16 cups
Yesenia buys 1 quart -> 4 cups
AND 1/2 a gallon -> 8 cups
4 cups from quart + 8 cups from 1/2 gallon = 12 cups total!
please help!! need to pass this class!!
Answer:
ADB and DBC
Step-by-step explanation:
Angles ADB and DBC are both marked with three curved lines which shows that their angles are congruent to each other.
Hope this helps! :)
Graph each inequality
2.In ABC, BD is perpendicular to AC. The dimensions are shown in centimeters.
What is the length, in centimeters, of AC?
ASAP BEFORE TOMORROW 11
Answer:
AC = 12
Step-by-step explanation:
From the question, we have that BD is perpendicular to AC
This means that it is at 90 degrees to the base
so we have two similar right triangles
Let us use Pythagoras’ theorem to get the measure of one of the legs (AD and DC)
Let us call the leg x
We have the Pythagoras’ theorem stating that the square of the hypotenuse (the side facing the right angle; 10 here) is equal to the sum of the squares of the two other sides
10^2 = x^2 + 8^2
100 = x^2 + 64
x^2 = 100-64
x^2 = 36
x = √36
x = 6
AD = DC = 6
AC = 2 * AD
AC = 2 * 6
AC = 12
A cell phone costs $750 and loses 28% of its value each year. What is the value of the phone after 2 years?
Answer:
the answer is 915
Step-by-step explanation:
tell me if I'm wrong okay
What is the value of x? (SOMEONE PLEASE HELP ME OUT BRO PLEASEEEEE IGNORE THE 9 smh)
Answer:
x=28
Step-by-step explanation:
Sum of all the angles in the triangle add up to equal 180
90 + x + 6 + 2x = 180
combine like terns
96 + 3x = 180
subtract 96 from each side
180-96=84
96-96 cancels out
3x=84
divide each side by 3
84/3=28
3/3 cancels out
x=28
The1AndOnlyMarkus
=========================================
Explanation:
The quadrilateral shown is a kite since we have adjacent sides that are the same length (due to the similar tickmarks). The diagonals of any kite intersect to form a 90 degree angle.
The triangle in the lower left corner has the three angles of
90x+62xThose three interior angles must add to 180. This is true of any triangle.
90+(x+6)+(2x) = 180
3x+96 = 180
3x = 180-96
3x = 84
x = 84/3
x = 28
what is the surface area of the milk carton to the nearest square inch? check your ansewr for reasonableness
Answer:
x
Step-by-step explanation:
there is no picture or anything else, thus it is unknown and can not be figured out unless you repost this with a picture or the full question.
Helppppp what is the answerrrr????
Mr. Gonzalez owns a triangular plot of land BCD with DB = 25 yards and BC = 16 yards. He wishes to purchase
the adjacent plot of land in the shape of right triangle ABD, as shown in the accompanying diagram, with AD =
15 yards. If the purchase is made, what will be the total number of square yards in the area of his plot of land,
ACD?
Answer:
270 square yards
Step-by-step explanation:
Answer: 90 yards
Step-by-step explanation:
❗️❗️❗️HELP❗️❗️❗️
Use f(x) and g(x) to answer the question.
f(x) = x +4
g(x) = x – 2
What is the product (fºg)(x)?
Answer:
Correct answer is the first one x^2 + 2x - 8
because (x + 4) (x - 2)
= x ^2 + 4x - 2x - 8
= x^2 + 2x - 8
Chad hiked to a famous point with a beautiful view. It took 1 hour and 15 minutes to hike to the viewpoint and 30 minutes to hike back. Chad spent 1 hour enjoying the view at the top. He finished the hike at 4:00 P.M. What time did Chad start the hike to the viewpoint?
Include A.M. or P.M. in your answer (for example, 11:58 A.M.).
Answer:
Step-by-step explanation:
t+1.25+.5+1=4
t=1.25 hours, .25hr=15 minutes so Chad started at
1:15p.m.
Help me
How do u do this
Answer:
second one and I don't know how to do it sorry is it a
Step-by-step explanation:
can you help me with my question