Answers
Answer:
Yes
Step-by-step explanation:
In the first equation, sub in (-3x/2) for y:
3x+4y=12
3x+4(-3x/2)=12
3x-(12x/2)=12
3x-6x=12
-3x=12
x=-4
y=-3x/2
y=-3(-4)/2
y=12/2
y=6
Since x=-4 and y=6, (-4,6) is a solution.
Related Questions
The length of a rectangle is three inches more than four times the width. The perimeter of the rectangle is 56 inches. What is the width of the rectangle?
Answers
Answer:
The width of the rectangle is 5 inches.
Step-by-step explanation:
Perimeter of a rectangle: 2L+2W where L=length and W=width
P=56
56=2(4W+3)+2W
56=8W+6+2W
56=8W+2W+6
56=10W+6
56-6=10W
50=10W
W=50/10=5
W=5
L=4W+3=4(5)+3=20+3=23
Sara and Collin's ages add up to 85. Sara is ten years older than foustimes
Collin's age. How old are Sara and Collin?
Answers
Answer:
Collin is 37.5 and Sara is 47.5
Step-by-step explanation:
s+c=85
c+10=s
(c+10)+c=85
2c+10=85
2c=75
c=37.5
s+(37.5)=85
s=47.5
To determine the organic material in a dried lake bed, the percent carbon by mass is measured at two different locations. In order to compare the means of the two different locations, it must first be determined whether the standard deviations of the two locations are different.To determine the organic material in a dried lake ted, the percent carbon by mass is measured at two different locations. In order to compare the means of the two different locations, it must first be determined whether the standard deviations of the two locations are different. Location1(%C) Location2(%C)1 10.40 10.102 10.20 10.903 10.30 10.204 10.40 10.705 10.20 10.40a-1. Far each location, calculate the standard deviation and report it.- location 1: _____- location 2: _____a-2. What is the calculated F value for comparing the standard deviation?b. Are the two standard deviations for the locations significantly different at the 95% confidence level?A. yes.B. No.c. What is the calculated t value used to compare the means of these two locations?d. Are the means for the two different locations significantly different at the 95% confidence level?A. yes.B. No.
Answers
Answer:
F statistic = 11.3 ;
-1.02
Step-by-step explanation:
____Location1(%C) ____ Location2(%C)
1 ______ 10.40 _________ 10.10
2 _____ 10.20 _________ 10.90
3 ______10.30 _________ 10.20
4 ______10.40 _________ 10.70
5 ______10.20 _________ 10.40
F = larger sample variance / smaller sample variance
Using calculator :
Sample standard deviation (s)
s1² = 0.01
s2² = 0.113
F = s2² / s1²
F = 0.113 / 0.01
F = 11.3
Yes, the two standard deviations for the locations are significantly different at the 95% confidence level.
B.)
Tvalue
x1 = 10.3 ; x2 = 10.46
μ1 = 10.30 ; μ2 = 10.46
(10.30 - 10.46) / sqrt[(0.01/5) + (0.113/5)]
-0.16 / 0.1568438
-1.02
solve each formula for the specified variable
Answers
Ax=C-By
x=(C-By)/A
3. Armen los siguientes prismas a partir de los que construyeron con su material recor
table. Después calculen el volumen de acuerdo con las dos formas que se indican
Prisma
Por et
en el fonda, near ty api
quen la foto da alisema cavab
en el fin de pana
tados con los de sus compañeros llegaron al misino resultado
Answers
Answer:
can you translate to english
Step-by-step explanation:
I can't understand
Graph the function.
f(x)=−sin(x)
Answers
Plot Points: (0,0) (1.57,-1)
20men can dig a trench in 15hours, how many men can dig the same trench in 10 hours if they work at the same rate?
Answers
15 hours =20men
1 hour =20/15 men
1hour =4/3 men
10 hours =40/3men
Aprrox 13 men
is 6.12 rational or irrational
Answers
Answer:
rational
Step-by-step explanation:
Answer:
rational
Step-by-step explanation:
Justin bought 12 souvenirs
during 6 days of vacation. How
many days will Justin have to
spend on vacation before he will
have bought a total of 20
souvenirs?
Answers
For the polynomial, x^3-13x^2+60x-100, 5 is one of the zeros. Find all remaining zeros.
Answers
HELP URGENT NEED HELP
A pound of blueberries costs $3.98 and a pound of clementines costs $2.49. What is the combined cost of 0.6 pound of blueberries and 1.8 of clementines? Round your answer to the nearest cent.
Answers
0.6*3.98+1.8*2.49 =6.87 total cost
Help quick!! Plsss:))
Answers
Answer:
4= 20
Step-by-step explanation:
hope this helps.
Find the missing dimension of the triangle.
DETAILED EXPLANATION.
Answers
Answer:
1.75 in
Step-by-step explanation:
kyo na bhala dyan sa sgot
Answer:
[tex]h=2\frac{2}{3}in.[/tex]
Step-by-step explanation:
Formula
[tex]A=\frac{hb}{2}[/tex]
Equation
[tex]h=2\frac{A}{b}[/tex]
[tex]h=2(\frac{2}{1.5})[/tex]
[tex]h=2\frac{2}{3}[/tex]
Check
[tex]2\frac{2}{3}[/tex] · [tex]1\frac{1}{2}=4[/tex]
4 ÷ 2 = 2 in.²
I need help. This is due in the next hour. (ಥ﹏ಥ)
Answers
Answer: 420 dollars
Step-by-step explanation: the expression would be 495-75=m where m=420
Hep me please this is to much
Answers
Answer:
b) 7
Step-by-step explanation:
Answer:
To make the sentences true the answer is 7
Step-by-step explanation:
8*7=56
56/8=7
On the first two days of his trip, Jamal traveled 17/35 of his journey What fraction of the trip does he still need to travel in order to finish his journey?
Answers
Answer:
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░░░▌░▄▄▄▐▌▀▀▀░░ This is Bob
▄░▐░░░▄▄░█░▀▀ ░░
▀█▌░░░▄░▀█▀░▀ ░░ Copy And Paste Him onto all of ur brainly answers
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Step-by-step explanation:
Answer:
18/35
Step-by-step explanation:
11 - 3X < 53
solve the inequalities
Answers
First, subtract 11 from both sides.
-3x < 42
Then divide -3 by both sides, and switch the sign.
x > -14
Answer:
It would be: x>-14
Step-by-step explanation:
I hope this helps you
PLEASE PLEASE HELP ITS TIMED I WILL GIVE 10 POINTS
Bria asked her classmates whether they prefer math or science. Nine of her classmates said math and eight of her
classmates said science. Which inequality correctly compares the fraction who prefer science to the fraction who
prefer math?
Answers
Answer:
8/17<9/17
Step-by-step explanation:
Might be wrong with my answer but my logic was that if there are 9 students who prefer math and 8 who prefer science, that there are 17 students total. If there are 17 students total the denominator should be 17. Since 8 of them prefer science, we can write that as 8/17 because 8 out of the 17 students prefer science. Similarly we can write the number of students who prefer math as 9/17 because there are 9 students out of 17 who do.
[2] Marta ha comprado 5 paquetes de 12 lápices cada uno y le han costado
24 €. Cuál es el precio de cada lápiz? Si quiere tener 100 lápices, ¿cuánto
le costará?
porfa es para mañana :'b
Answers
Answer:
Step-by-step explanation:
what
Help me! Fill in the missing number:
Answers
(2 4/10 + 8 4/5) - 3 1/5
Answers
Answer:
it says use a calculater maybe if u used one it would help u out.
Step-by-step explanation:
Answer:
8
Step-by-step explanation:
You can first simplify each fraction, so the it would be (24/10 + 44/5) - 16/5. And then add what is in the parenthesis, 556/5, and then subtract 16/5 to get 8.
NEED HELP MATH!!! 7TH GRADE
Answers
The scale is 1 in: 10 feet; because the deck's real width is 10 ft, the scale can read 1 inch. To evaluate the width: 1/10 = x/8
Cross multiply:
1*8 = 10*x
8 = 10x
Divide both sides by 10:
8/10 = 10x/10
0.8 = x
The scale drawing's width would be 0.8 inches.
Based on the scatterplot below, what is the most likely value for “Pounds of Apples” when “Number of Apples” is 80? A graph titled Number of Apples versus Pounds of Apples has number of apples on the x-axis, and pounds of apples on the y-axis. Points are at (9, 5), (15, 11), (25, 12), (38, 17), (45, 25). 42 81 158 398
Answers
Answer:
42
Step-by-step explanation:
Given ΔABC, what is the value of x? Write the answer as a decimal number.
Answers
prove that 4 is a multiple of 2
Answers
Answer: Look below=3 I hope this helps. Also please forgive me if it's wrong.
Step-by-step explanation: All multiples of 4 are also multiples of 2. This is because 4 is in the two times table and all multiples of 4 can be divided by 2. All multiples of 4 are even.
name a positive or number integer to represent each situation1 deposited Php 400.00
Answers
Answer:
400
+400
Step-by-step explanation:
Given
Deposit 400.00
Required
Represent as an integer
Deposit means being credited. So, we represent deposit as a positive value.
A deposit of Php 400.00 when represented with an integer is 400 or +400
what is the area for this pls.
Answers
nAnswer:
32??? i think dont kill me if its wrong
Step-by-step explanation:
I WILL MARK YOUR BRAINLY OR WHATEVER HELPPP
Challenge A large university accepts 70% of the students who apply. Of the students the
university accepts, 25% actually enroll. If 10,000 students apply, how many actually enroll?
students would actually enroll. (Type a whole number.)
Answers
Answer:
2500
Step-by-step explanation:
25% of 10 000= 2500
70% of 10,000 applicants are accepted = 7000 accepted students
25% of accepted students enroll
0.25 x 7000 = 1750 enroll
What graph shows the solution to this system
y >= 3x + 2
-4x + 3y > 12
(Less than or equal to: >=
Answers
Answer:
C
Step-by-step explanation:
first
let 3x-y= -2
here after rearranging fin the different values of x and y w. r. t the equation then shade the upper region of the line
similarly do with the second one equation and then mark the line as dotted and shade the below part of the equation of the line and then find the common shaded area
Which is the graph of f(x) = square root of x?
Answers
Answer:
b
Step-by-step explanation:
use demos online graphing calculator to check and for future graph problems