eq^2: 7x=84 divide 84 by 7 which is 12.
therefore x is equal to 12. Then
1) take that 12 you got in equation 2 and substitute in equation 1 which is:
7x-12y=180
7(12)-12y=180
84 -12y=180
-12y=180-84
-12y=96 ............divide both sides with -12
-y=8 (×-1) both sides
y= -8
therefore 7(12)-12(-8)=180
Tim's lawn in 20 meters by 30 meters. If Tim can mow 8 square meters of grass per minute, how long will it take him to mow the lawn.
Answer:
75
Step-by-step explanation:
20x30=600/8=75
What is the value of -2[3-11] divided by 3
What is Jackie's monthly salary if her annual gross pay is $65,400
Answer:
The answer is $5450 per month
Please help... need help ASAP
Answer:
c
did the test got it right.
Step-by-step explanation:
please help me
( will give brainliest )
any links or websites commented will be reported !
Answer:
1 1/2
Step-by-step explanation:
2 2/3 - 1 1/6 = ?
The LCD here is 6. Convert 2 2/3 so that the denominator is 6:
2 2/3 = 2 4/6
Then subtract 1 1/6 from 2 4/6: We get 1 3/6, or 1 1/2
A. There are 34 musicians included in the data.
B. The range of the ages shown is 8 years.
C. Most of the musicians started to play at age 9 or older.
D. Fewer of the musicians started to play at age 12 than at age 5.
Answer:
Most of the musicians started to play at age 9 or older
can anybody answer this? asap
Question:
A ribbon with a length of p cm is cut into three parts. The length of the first part and the second part are x cm and 2x cm respectively.
(a) Write an expression for the length of the third part.
(b) If x = 10 and the length of the second part is four times the length of the third part, calculate the value of p.
Answer:
(a) y = (p - 3x) cm
(b) p = 35 cm
Step-by-step explanation:
Total length of the ribbon = p cm
The length of the first part = x cm
The length of the second part = 2x cm
Let the length of the third part be represented by y.
(a) Thus,
x + 2x + y = p
3x + y = p
y = p - 3x
An expression for the length of the third part is (p - 3x) cm
(b) If x = 10 cm, then;
length of first part = 10 cm
length of the second part = 2x
= 2(10)
= 20 cm
But,
length of the second part = 4y
i.e 20 = 4y
y = 5 cm
The value of p = 10 + 20 + 5
= 35 cm
p = 35 cm
The mass of Earth is about 6 X 1024
kilograms. The mass of the moon is about 7.4 X 1022
kilograms. About how many times greater is Earth's mass
than the mass of the moon?
Answer:
81
Step-by-step explanation:
To do "how many times greater" problems, you divide. Think how you would answer this: How many times greater is 48 than 6? Dividing the larger 48 by the smaller 6 gives 8. 48 is 8 times greater than 6.
Do the same thing for these two masses.
6 x 10^24 divided by 7.4 x 10^22 is about 81.
The attached image shows a TI-83 display.
Please help me with my work
Answer:
area of the pyramid
(15×15)+(2×15×20)
225.+600
825 ft²
Andrea has 4 hours to spend training for an upcoming race. She completes her training by running full speed the distance of the race and walking back the same distance to cool down. If she runs at a speed of 8mph and walks back at a speed of 2mph, how long should she plan to spend walking back?
Answer:
Time spend in walking = 3.2 hour = 3¹/₅ hour
Step-by-step explanation:
Given:
Total time taken = 4 hour
Speed when run = 8 mph
Speed when walk = 2 mph
Find:
Time spend in walking
Computtaion:
We know that;
Time = Distance / Speed
Assume;
One side distance = D
So,
D/8 + D/2 = 4
2D + 8D = 64
10D = 64
D = 6.4
So,
One side distance = 6.4 mile
Time spend in walking = One side distance / Speed when walk
Time spend in walking = 6.4 / 2
Time spend in walking = 3.2 hour = 3¹/₅ hour
What is the total surface area
the answer is 216.81 I looked it up on a calculator
Enter values of a and b for which x = 4 is a solution of the equation shown. ax +4= 5x + b a= ? b= ?
Answer: A=5 B=4
Step-by-step explanation: 4a+4=20+b
If a = 5 and b = 4
then the equation would be:
20+4=20+4
24 = 24
That works out to be true
the slope of the line that passes through the point
(2,4) and is (3,8)
24=x^2−4x+3 completing the square
Answer:
-3,7
Step-by-step explanation:
See the Image below:)
You pick a card at random.
1,2,3,4,5,6,7
What is P(not 6)?
Write your answer as a fraction or whole number.
Answer:
6/7
Step-by-step explanation:
....................
Write -5.8 as a mixed number in simplest form.
Answer: −5 4/5
Step-by-step explanation: I used m.a.t.h.w.a.y
Answer:
-1 3/8
Step-by-step explanation:
Please help !!
What is the length , in centimeters , of line segment EF ?
Answer:
6
Step-by-step explanation:
The perimeter of ABC is 36 so each side is 12 cm. Since the vertices of DEF are the midpoint, then the side EF is 6 cm
92(23+36)=
A. 5,148
B. 5,248
C. 5,418
D. 5,428
Answer:
D
Step-by-step explanation:
92(23 + 36)
92(59)
92*59=5428
Answer: D. 5,428
Step-by-step explanation:
According to the rules of Order of Operations we first solve the problem in parentheses.
23+36=59
Then we multiply that number by 92.
59 x 92 = 5,428
Can Someone Please Answer Question #23 for me make sure u show work. Thank you
Answer: x= 16
Step-by-step explanation:
2x+ 36 + 7x = 180
9x= 144
x= 16
5(2x-4 distributive term?
Answer:
10x - 20
Step-by-step explanation:
5(2x - 4)
5(2x) = 10x
5(-4) = -20
Combined:
10x - 20
PLEASEEE HELP WITH THE IMAGE!!! WILL GIVE BRAINLIESTSSSS!!!!!!
Answer:
624ft
Step-by-step explanation:
yeah you're welcome
484ft ^2
10x12x0.5=60
14x13=182
182+60=242 ft^2
242ft^2x2=484 because there are 2 of each of the visible sides
edit i messed up and changed my answer
HELPPP PLZ WHATS THE ANSWER PLZ DONT SEND A FILE PLZ. what is this question going across is going across the y or it going across the x ??? ONLY ANSWER IF YOU REALLY KNOW THE ANSWER. I need the answer for question 1 and 2 !!
HELP IF RIGHT WILL MARK BRIANLIEST!! NO LINKS!!!!!!!
Answer:
14 is the simplified answer, but the whole answer is 17 + -18/6
Step-by-step explanation:
Divide
−
18 by 6. h (−18) = 17 − 3 Subtract 3 from 17. h (−18)= 14
The final answer is 14.
Please solve ln(x-1)^2=4
Step-by-step explanation:
hope this helped you :)) !!
are these easyyyyyyyyyyyyyyyyyyyyyyyy
Answer:
no
Step-by-step explanation:
no they are not they are hard
Answer:
yes they are easy. Do you need the answers? If so just let me know in the comments and i'll edit this answer with the answers =D
Heyaaaaaaaaaaa!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Hellooooooooooooooooooooo!!!!!!!!
Answer:
maaaaaaaaaaaaaaaaaaa!!!!!!!!!??????!!!
PLEASE I AM BEGGING YOU EXTRA POINTS AND BRAINLIEST!!!!!!!!!!!!!!!!!
Answer:
0.75(x-18)=84.5
And
0.75x-13.5=84.5
On both of them, x = 130.6 and on the other answer choices it’s different answers those 2 equal the same only
Step-by-step explanation:
hope this helps
PLEASE HELP...........
Answer: Just do 2355
Step-by-step explanation: its that
Answer:
Oh my ga- srsly!? You need help with that!?
Step-by-step explanation:
The other answer another user gave is INCORRECT.
Go ask your teacher for help, tell me what you know. I'll help you in the comments.
Supongamos que un restaurante ofrece 5 entradas, 4 platos principales y 3 postres. ¿De
cuántas formas un cliente puede ordenar una comida?
Answer:
El cliente puede ordenar una comida en 60 formas distintas.
Step-by-step explanation:
El cliente escoge una entrada de las cinco opciones disponibles, luego un plato principal de cuatro opciones disponibles y un postre de tres opciones disponibles. Es costumbre consumir primero una entrada, después un plato principal y finalmente, un postre.
Estadísticamente hablando, se debe considerar un producto de tres combinaciones, puesto que el orden no importa a la hora de pedir, como sigue:
[tex]n = _{5}C_{1}\times _{4}C_{1}\times _{3}C_{1}[/tex] (1)
Donde:
[tex]n[/tex] - Total de combinaciones al ordenar una comida (entrada, plato principal, postre)
[tex]_{5}C_{1}[/tex] - Combinaciones posibles para pedir una entrada.
[tex]_{4}C_{1}[/tex] - Combinaciones posibles para pedir un plato principal.
[tex]_{3}C_{1}[/tex] - Combinaciones posibles para pedir un postre.
Ahora, desarrollamos la operación:
[tex]n = \frac{5!}{(5-1)!}\times \frac{4!}{(4-1)!} \times \frac{3!}{(3-1)!}[/tex]
[tex]n = 5\times 4\times 3[/tex]
[tex]n = 60[/tex]
El cliente puede ordenar una comida en 60 formas distintas.
One school purchased 10 gallons of blue paint to decorate several of its classrooms. If
each classroom needs of a gallon of paint, then how many classrooms will get
painted?
Answer:
10 classrooms
Step-by-step explanation:
Divide it.
If each class needs 1 gallon, 10/1=10