Solve the system by substitution.
1. y = -6x – 7
y = -7x
2. -y=x
3x+5y=20
Answer:
For no. 1:
One of the equations say that y=-7x
So plug in -7x to the other equation as y so you equation would be
-7x= -6x-7
And then, just solve for the variable:
*add -6x to both sides*:
-x= -7
*multiply both by negative one to get a positive variable*
FOR NUMBER 1, THE ANSWER IS:
x=7
Y=-7
For no. 2:
-y=x and your other equation is 3x+5y=20
Plug in x as -y:
-3y+5y=20
*simplify*
2y=20
*divide by 2 on each side to get 1 variable alone*
Y=10
FOR NUMBER 2, THE ANSWER IS:
x=-y
Y=10
What is the slope of the line through (-9, -6) and (3,-9)
Write the equation, in point-slope form, that contains the point (3, -6) with a slope of 2.
Answer:
y+6=2(x-3)
Step-by-step explanation:
y-y1=m(x-x1)
y-(-6)=2(x-3)
y+6=2(x-3)
simplify the expression and combine like terms. 4 (z - 2) + 2 (z - 1)
PLEASE PLEASE HELP ME IM BEGGING
Step-by-step explanation:
D=M/V
M=D*V
V= M/D
M is mass
D is Density
V is Volume
Substitute and solve
HELPPPPPPPP!!!!!!! ASAPPPPPPPPPPP!!!!
Answer:
The correct answer is 5.29 * [tex]10^{-5}[/tex]
Step-by-step explanation:
Scientific notation's form is a number ones digit number that may have decimals and is multiplied by 10 to some power, this is the only choice that fulfills this rule, so this is the correct answer.
The area of the rectangle shown below is given by the expression 7x+35. If the width of
the rectangle is equal to 7, then which of the following is the correct expression for the
missing length of the rectangle in terms of the variable x?
(1) x+35
L = ?
(2) 7x + 21
(3) r + 28. (4) r+5
Area = 7x + 35
Answer:
I think C(3)
Step-by-step explanation:
help please! find the value of y
Answer:
Step-by-step explanation:
Solve for x and explain how you got your answer
3x + 4 = 16
Answer:
X = 4
Step-by-step explanation:
3x=16-4
3x= 12
X=12/3
X= 4
The area of a square tile is 1.56 square feet. What is the area of a floor covered with 103 tiles?
Answer:
168/169
Step-by-step explanation:
169 if you round 168.68 to 169
m
(9x + 2)
1
(5х – 1)°
740
What is mz2?
39°
570
ОООО
67°
740
Answer:
m∠2 = 67°Step-by-step explanation:
m║n ⇒ (9x + 2)° = 74° {Corresponding Angles}
(9x)° = 72°
x = 8
Angles: angle corresponding to angle (5x-1)°, angle 74° and angle 2 add to 180° (straight angle)
(5×8 - 1)° + 74° + m∠2 = 180°
39° + 74° + m∠2 = 180°
113° + m∠2 = 180°
m∠2 = 180° - 113°
m∠2 = 67°
will mark brainliest if correct please show steps
Answer:
Do you need the answer to this queston if so it is 2
Step-by-step explanation:
what is 4.059 divided by 100
Answer:
0.04059
Step-by-step explanation:
Dont need awnser just explain
Answer:
i am just standing here
Step-by-step explanation:
A bus increases its position at a constant velocity for 12 s, and then it stops for 6 s.
Which option lists a true statement about how a distance-time graph would represent this motion?
A) The slope of the graph would be negative and constant for 12 s; then, the slope would be constant for 6 s because the slope represents velocity.
B) The slope of the graph would be positive and constant for 12 s; then, the slope would be 0 for 6 s because the slope represents velocity.
C) The slope of the graph would be positive and increasing for 12 s; then, the slope would be constant for 6 s because the slope represents velocity.
D) The slope of the graph would be negative and constant for 12 s; then, the slope would be 0 for 6 s because the slope represents the passing of time.
Answer:
D
Step-by-step explanation:
The slope of the graph would be negative and constant for 12 s; then, the slope would be 0 for 6 s because the slope represents the passing of time. Therefore, option D is the correct answer.
What is a constant velocity?Velocity gives us information about the rate of change of your position, meaning how fast your position is changing per unit time.
Given that, a bus increases its position at a constant velocity for 12 s, and then it stops for 6 s.
Here, rate of change is 12/6 = 2 s
Therefore, option D is the correct answer.
Learn more about the velocity here:
https://brainly.com/question/19979064.
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A line passes through the points (5, 2) and (4, 0). What is its equation in slope-intercept form?
Answer:
Step-by-step explanation:
(0 - 2)/(4 - 5)= -2/-1= 2
y - 2 = 2(x - 5)
y - 2 = 2x - 10
y = 2x - 8
Lucas’s computer took 8 minutes to download 30 songs. How many seconds per song did it take his computer to download
well i still don get it whats the difference between 8 fourty seven and 7 fourty seven
Given : the difference between 8 forty-sevens and 7 forty-seven.
To find : Solve it.
Solution : We have given a statement
Difference between 8 forty-sevens and 7 forty-seven.
8 forty-sevens mean 847
7 forty-seven mean 747
Difference between them is
847 - 747 = 100.
Therefore,100.
PLSSSSSS HELP ME LAST ATTEMPT AND THIS IS MY LAST QUESTION ILL MAKR BRAINLIEST.
Which set of side lengths form a right triangle?
7 cm, 8 cm, 10 cm
3 ft, 6 ft, 5 ft
14 m, 20 m, 25 m
10 cm, 6 cm, 8 cm
Answer:
D.) 10cm, 6 cm, 8 cm
Step-by-step explanation:
I jus kno
You invest $125,000 in an account that earns 4.75% annual
interest, compounded continuously.
a. What is the value of the account after 15 years?
Step-by-step explanation:
step 1. let's call the amount of money A, the initial amount A¡, the rate r, and the time t.
step 2. A = A¡e^(rt) (continuously compounding equation)
step 3. A = 125000e^((.0475)(15))
step 4. A = $254,885.32
The value of the account after 15 years will be $254885.
In theory, continuously compounded interest means that an account balance is constantly earning interest and reinvesting that interest so that it, too, earns interest.p explanation.
In finance and economics, interest is the payment of an amount above the repayment of the principal sum by a borrower or deposit-taking financial institution to a lender or depositor at a specific rate by a borrower or depositor.
Given that you invest $125,000 in an account that earns 4.75% annually for 15 years of the time.
The compound interest will be calculated as:-
[tex]P(t) = P_o\times e^{rt}\\P(t) = 1250000\times e^{0.0475\times 15}[/tex]
P(t) = $254885
Hence, the value of the account after 15 years will be $254885.
To know more about compound interest follow
https://brainly.com/question/28020457
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Can someone help me PLEASE!!!!!!!!!!
Answer:
1, 4, and 5
Step-by-step explanation:
18-2x5
18-10
8
6+4x4
6+16
22
6x9-9
54-9
45
7x9+1
63+1
64
4x6-6
24-6
18
If Amy has 10 quarters, 10 dimes, and 10 nickels what percent of her MONEY is in dimes?
Answer:
%0.13
Step-by-step explanation:
10 quarters= $2.5 which is 25 dimes
10 nickels= $0.5 which is 5 dimes
10 dimes= $100
100+25+5= 130 dimes = $13
13/100 = %0.13
The table and equation below show the proportional relationship between time, in seconds, $x$ , and distance traveled, in feet, $y$ , for two remote-control cars. Car 1 $x$ $y$ $15$ $75$ $17$ $85$ $21$ $105$ Car 2y\ =\ 10x$ Which statement is true about the speeds of the two cars? A Car 1 is traveling faster than Car 2. B Car 2 is traveling faster than Car 1. C The two cars are traveling at the same speed.
Answer:$12$
Step-by-step explanation:
Lauren's fruit salad recipe calls for 15 cups of apples for every 3 cups of grapes. How many cups of grapes are used for each cup of apples? Help me please!
Answer:
1/5 cup of grape for each cup of apple
Step-by-step explanation:
Divide: 3 divided by 15=0.2
0.2 as a fraction is 2/10
2/10 simplified=1/5
(I was gonna put picture of my work, but I'm too lazy, lol)
Hope this helped!! :)
Stay safe and have a wonderful day/night!!!!!
Brainliest?!?!
Find the scale factor going from rectangle ABCD to rectangle UVWX.
Answer:
its 7
Step-by-step explanation:
7
To solve 3m - 5 = 196, what is the first step that should be performed? a. Add 5 to both sides. b. Subtract 5 from both sides. c. Multiply each side by 3. d. Divide each side by 3.
Answer:
add 5
Step-by-step explanation:
in algebra you do pemdas backwards
30. A mom bought her kids 3 cartons of milk
for $1.25 each and 6 doughnuts. The total
cost was $6.90. Write an equation to
determine the cost of a doughnut.
Answer:
x = (1.25 * 3 - 6.90) divided by 6
Step-by-step explanation:
this will get the price of all the milk, then take it out of the total price, then divide it by 6 because there are 6 donuts, this will give you the price of 1 donut
Answer:
$3.15
Step-by-step explanation:
$1.25x3=$3.75
$6.90-$3.75=$3.15
Please Help Me!! I will give you a heart, 5-star rating, and Brainliest if you answer with an explanation!! :))))
Question: Mrs. Johnson buys 5 bottles of lemonade for the school picnic. She buys four 28- ounce bottles and one 64- ounce bottle. Using rounding to the nearest ten about how much lemonade does Mrs. Johnson buy in all?
A. 90 ounces B. 180 ounces C. 190 ounces D. 360 ounces
Answer: 180
Step-by-step explanation:
28 times 4 = 112 *because there is 4 bottles of 28*
then add 64 to 112. that equals 176. 176 rounds to 180.
. How many dozen must be sold to make a profit of $90? Make a Selection: A. 45 B. 25 C. 30 D. 8
Find the value of x.
Answer:
5
Step-by-step explanation:
because its squared 5 but 5 regular is almost 4 if u look at bottom theres 4 so x is 5