The first number will be [tex]\frac{11}{2}[/tex] and the second number will be [tex]-\frac{5}{4}[/tex].
Let the first number be x and the second number be y.
According to the question,
Since seven times the first number plus six times the second number equals 31. So,
[tex]7x+6y=31.......(1)[/tex]
Similarly,Three times the first number minus ten times the second number is 29.So,
[tex]3x-10y=29.......(2)[/tex]
Multiplying equation (1) by 3 and equation (2) by 7, we get
[tex]21x+18y=93[/tex]
[tex]21x-70y=203[/tex]
Now subtracting both the equations we get,
[tex]88y=-110[/tex]
[tex]y=-\dfrac{110}{88}[/tex]
[tex]y=-\dfrac{5}{4}[/tex]
putting the value of x in equation (1) we get,
[tex]7x+6\times-\dfrac{5}{4} =31[/tex]
[tex]7x-\dfrac{15}{2}=31\\[/tex]
[tex]7x=31+\dfrac{15}{2}[/tex]
[tex]7x=\dfrac{77}{2}[/tex]
[tex]x=\dfrac{11}{2}[/tex]
Hence the first number is [tex]\frac{11}{2}[/tex] and the second number is [tex]-\frac{5}{4}[/tex].
For more details on solving linear equation in two variables follow the link:
https://brainly.com/question/10270150
ill mark brainliest please help
Answer:
56 cups
Step-by-step explanation:
56 cups=3.5 gallons
Find the surface area of the prism.
Which of the following is the midpoint of segment
AB
given that
A(−5,12) and B(3,−8)
Answer:
(-1, 2)
Step-by-step explanation:
Finding the midpoint of a line, having been given two points, is like finding the average coordinate of those two points.
To find the average x coodinate (and hence the midpoint's x coordinate), you have to sum the x coordinates and divide by 2 - like finding the mean.
To find the y coordinate, sum the y coordinates and divide by two.
[tex](x,y) = (\frac{-5+3}{2} , \frac{12+-8}{2} )[/tex]
Answer:
Step-by-step explanation:
(12 - 8)/2 = 4/2 = 2
(-5 + 3)/2 = -2/2= -1
(-1, 2) midpoint
Find the slope of the line. Write your answer in simplest form.
are 3:6 and 6:3 equivalent?
Answer:
No
Step-by-step explanation:
3:6 is a ratio saying for every 3, there's 6, or just convert them into fractions, like 3:6 is 3/6 and 6:3 is 6/3,
so is 3/6 = 6/3, no so they aren't equivalent
GURRY FOR BRAINLEIST PLS HURRY
Answer:
C= 10.6
Step-by-step explanation:
AB^2=AC^2+CB^2
C^2=7^2+8^2
C^2= 113
√113=10.630
1. 36.19 to the nearest tenths
Answer:
36.2
Step-by-step explanation:
Answer:
36.20
Step-by-step explanation:
it's basiclaly another word for 1 decimal place. 9 is bigger than 5 so it rounds 1 to 2.
HELPPPP PLSSS IM FAILING MATHHH
Answer:
The answer is C
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
if you see where the red line ends on the right side it is at 170 on the protractor
Find the number that makes the ratio equivalent to 2:9. 6:
Help me cuz yah gurl gotta test UwU
Answer:
got u
Step-by-step explanation:
Calculate the vapor pressure (in torr) of a solution containing 0.2 moles of solute dissolved in 10 moles of water at 25°C. Vapor pressure of pure water at 25°C is 23.8 torr. Enter text here Enter 2021 Acellus Corporation. All Rights Reserved. C
Answer:
the vapor pressure of a solution at 25°C that contains 76.6 g of glucose (180.2 g/mole) in 250.0 mL of water. The vapor pressure of pure water at 25°C
Step-by-step explanation:
your answer is: 22.9 torr at 25°C
Explanation:
When a non volatile solute is added to a pure solvent, the vapour pressure of the mixture decrease regard to the pure solvent following the equation
Where vapour pressure of the pure solvent (Water) is 23.8torr at 25°C.
Mole fraction of water is the ratio between moles of water and total moles in solution. The solution has a mole fraction of water of:
Replacing in Raoult's law:
Vapor pressure of the solution is 22.9 torr at 25°C
hope this helps!
What is decimal and percent for 3/1000
Answer:
.003 .03%
Step-by-step explanation:
Find the area 3/4 circle with the radius of 4.
THXXXXX
Step-by-step explanation:
If you were asking what is the 3/4 the area of circle with radius 4 I can answer this.
The area of a circle with radius 4 is π4 ^2=16π
3/4*16π= 12π, thus your answer.
What is the equation of a line that passes through the points 0,5 and 4,8 in slope intercept form
Answer:
y = 3/4 + b
Step-by-step explanation:
To get slope intercept form you need to have the y = then you need to find the slope which is y2 - y1 and x2 - x1, find the answer whether it be a fraction or a whole number. And since you don't know the y-intercept you mark the last integer as b, since you don't the answer. So it comes out to y = 3/4 + b
y = (3/4)x + 5
Using the two coordinates, you can find slope and y-intercept
y-intercept is 5, from the point (0,5)
slope is 3/4, from rise/run, and that 0 to 4 is 4, while 5 to 8 is 3.
Combine slope and y-intercept for slope intercept form
y = (3/4)x + 5
I need help with this
Answer:
its d
Step-by-step explanation:
the slope is -20 because for every 30 seconds the altitude gets smaller by 600 feet. 600/30=20 so its going down 20 feet per second.
what is (h - 5)(h - 8)
Answer:
h^2-13h+40
Step-by-step explanation:
(h-5)(h-8)
h^2-5h-8h+40
h^2-13h+40
Does anyone know how to solve this?
Answer:
2 3/9 + 3 8/9 = 6 2/9
Find the inverse of the matrix (if it exists). (If the answer does not exist, enter DNE in any cell of the matrix.)
Answer:
[tex]\begin{pmatrix}-15&-28\\ -8&-15\end{pmatrix}[/tex]
Step-by-step explanation:
[tex]\begin{pmatrix}a\:&\:b\:\\ c\:&\:d\:\end{pmatrix}^{-1}=\frac{1}{\det \begin{pmatrix}a\:&\:b\:\\ c\:&\:d\:\end{pmatrix}}\begin{pmatrix}d\:&\:-b\:\\ -c\:&\:a\:\end{pmatrix}[/tex]
This is the formula we will use. Accordingly:
[tex]=>\frac{1}{\det \begin{pmatrix}-15&28\\ 8&-15\end{pmatrix}}\begin{pmatrix}-15&-28\\ -8&-15\end{pmatrix}[/tex]
det represents the determinant
if the determinant is 0 then only the inverse matrix will not exist. So let's find the determinant.
[tex]\det = \left(-15\right)\left(-15\right)-28\cdot \:8\\ = 1[/tex]
Now we multiply the following matrix by 1/1:
[tex]\frac{1}{1}\begin{pmatrix}-15&-28\\ -8&-15\end{pmatrix} = \begin{pmatrix}-15&-28\\ -8&-15\end{pmatrix}[/tex]
How many solutions exist for the given equation?
3(x - 2) = 22 - x
Answer:
X=7 SO JUST 1
Step-by-step explanation:
Christina is having a Super Bowl party with 7 of her celebrity friends. Kobe lives 32 miles from Christina. Will Smith has to drive 32 miles to get to Christina’s. Kim Kardashian will drive 15 miles to get there. Wiz Khalifa is going to ride his bike 2 miles to get there. Andre 3000 is going to run 3 miles to get to Christina’s, and Lebron lives 32 miles from Christina’s house as well. Cardi B lives 45 miles from Christina. What is the median, mode, and mean of distance that they can travel? Complete the table below.
Answer:
Median: 32
Mode: 32
Mean of Distance: 22.60
Step-by-step explanation:
2, 3, 12, 32, 32, 32, 45
kobe 32 miles away
will smith 32 miles away
kim 12 miles away
wiz 2 miles away
andre 3 miles
lebron 32 miles
cardi b 45 miles
Round to the nearest thousand. 8,643
Answer:9,000
Step-by-step explanation:
The 6 rounds the 8 up to a 9
(Sorry if wrong havent learned in a while)
pls help me with this?
Answer:
C. 3
Step-by-step explanation:
A^2+B^2=C^2
A^2+4^2=5^2
A^2+16=25
A^2=9
A=3
Amelia bought a violin that was on sale for 15% off. If the original price was
$220 what is the sale price? *
O $15
O $33
O $187
O $253
what is (p−5)−(4p−7)?
Answer:
the answer is − 3 + 2
I NEED HELP!!
In the figure below, vertices D and F of
A DEF lie on CG. What is the measure of
DEF?
Answer:
D 108
Step-by-step explanation:
YOU CAN MARK ME AS BRAINIEST IF YOU WANT
what does 6 × 9 + 6 + 9 equal? :)
Solve 0 = x2 + 6x + 13 by completing the square.
A. x = 5 and x = 1
B. x = 3 + i22−−√ and x = 3 − i22−−√
C. x = −1 and x = 1
D. x = −3 + 2i and x = −3 − 2i
Answer:
x = -3 - 2i and x = -3 + 2i
Step-by-step explanation:
I was too lazy to complete the square but solved it on WolframAlpha
If 20% of a number is 28 and 25% of the same number is 35, find 45% of that
number.
Compare and Contrast: Two equations are listed below. Solve each equation and compare the solutions. Choose the statement that is true
about both solutions. (2 points)
Equation 1 Equation 2
5x - 61 = -41 17x + 131 = 27
оа
Equation 1 has more solutions than equation 2.
Ob
Equation 1 and Equation 2 have the same number of solutions.
ос
Equation 2 has more solutions than Equation 1.
Od
The number of solutions cannot be determined.
Answer:
equation 2
Step-by-step explanation:
Can I get an answer to these? I feel asleep during a zoom class and I didn't hear what he said and now I'm confused.