9514 1404 393
Answer:
x
Step-by-step explanation:
There is already an expression given for x, so that is the easiest variable to substitute for.
Substituting for x using the second equation, you have ...
-3(-2y+14) +y = -14
6y -42 +y = -14
7y = 28
y = 4
x = -2(4) +14 = 6
The solution is (x, y) = (6, 4).
_____
Substitution for x is the easiest.
__
The first equation could be rearranged to give an expression for y:
y = 3x -14
Then that can be used to substitute for y in the second equation. My lazy brain judges that to be more work.
A caterpillar eats 1400\%1400%1400, percent of its birth mass in one day. The caterpillar's birth mass is mmm grams.
Which of the following expressions could represent the amount, in grams, the caterpillar eats in one day?
Choose 2 answers:
sorry, I just copied and pasted and it gave me extra numbers.
by the way, this is for khan academy
Answer:
I d k
Step-by-step explanation:
Answer:
The correct answer is B and E.
Step-by-step explanation:
I did it in Khan Academy.
When looking at a rate table for supplemental term life insurance, what are the rates based on?
a. where the insured was born
b. the marital status of the insured
c. where the insured lives
d. the age of the insured
Answer:
d. the age of the insured
Step-by-step explanation:
The primary unit for figuring out a life insurance rate is the rate per thousand
PLEAASSEE PLLEEAAASSSEEE SOMEONE ANSWER THIS IS URGGEENNNTTTT!!!!!!!!!!!!!!!!!!!!! I'LL EVEN GIVE YOU BRAINLIST!!!!!!!!!!!!!!!!!
Candice has a bag with 4 green, 7 orange, and 9 blue Skittles in it. She randomly selects one Skittle to eat and then another. Is this dependent or independent probability?
A. independent
B. dependent
Answer:
Step-by-step explanation:
Multiple Choice The Astrodome-in Houston, Texas, is circular and has a diameter of 710 feet. What is the approximate circumference of the Astrodom
Answer:
Step-by-step explanation:
[tex]C=\pi d\\ \\ C=710\pi ft\\ \\ C\approx 2230.5 ft[/tex]
Answer:
2230.53
Step-by-step explanation:
2g(4g+3)+g(g-7) expand linear brackets
Answer:
7g^2 - 13g
Step-by-step explanation:
2g(4g+3)= 8g^2 + 6g
g(g-7)+ g^2 - 7g
8g^2 + 6g = g^2 - 7g
7g^2 = -13g
1. Which situation could be represented by y = 4x + 7?
a student started with $4 and saved $7 per week.
A package costs $7 plus $4 per pound to ship.
A skateboard weighs 4 pounds plus 7 ounces.
A recipe calls for 7 cups of flour and 4 cups of sugar.
2. What is the equation of the line through (5,8) and (2,2)?
y = 2x + 2
y = 2x - 2
y = 5x - 8
y =8x - 5
3. The slope of a line is -1/3 and the y-intercept is 3. What is the equation of this line?
y = 1/3 + 3
y = -1/3 + 3
y = 3x - 3
y = 3x - 1/3
4. What is the equation of the line that has a slope of 2 and goes through (3,7)?
y = 2x + 3
y = 1/2x + 7
y = 2x + 1
y = -2x + 1
5. Sammy is saving up to buy a PS5 plus. He has $40 and will save $60 per week. Which equation represents this situation?
1 point
y = 40x + 60
y + 60x + 40
y = 60x - 40
y = 40x - 60
6. Sammy is saving up to buy a PS5 plus. He has $40 and will save $40 per week. How long will it take Sammy to save the money if the PS5 plus costs $600?
11 weeks
12 weeks
13 weeks
14 weeks
7. Steph made $360 working 30 hours last week. Sam made $195 working 15 hours last week. Who made more per hour?
Steph
Sam
Answer:
B, A package costs $7 plus $4 per pound to ship. B, y = 2x - 2 B, y = -1/3x + 3 C, y = 2x + 1 B, y = 60x + 40 D, 14 weeks (600 = 40 + 40x)Sam, ($13hr)i hope this helps, good luck :)
Resuelve
Ritmo de cambio. Cada uno de los siguientes datos es la pendiente de una recta que representa los ingresos diarios y en términos del tiempo X en días. Utilizar la pendiente para interpretar
la variación en los ingresos correspondiente a un incremento de
un día
a). m =800
b). m =250
c). m = 0
Answer:
800m
Step-by-step explanation:
porque incremento de un día
82- 2to the third power.5 please help!
Answer:
240
Step-by-step explanation:
82-2= 80 to the third power so just multiply 80 x 3 and you have your answer.
Answer:
512000 (square root of it is 712.5)
Step-by-step explanation:
82 -2 = 80
80^3
= 80*80*80
= 80^3
= 512000 (square root of it is 712.5)
Let me know if this was helpful!!
Isabella deposited $500 into a savings account at a local bank that earned 5% interest per year. How much interest does she earn in her first year?
Answer:
$25
Step-by-step explanation:
First, converting R percent to r a decimal
r = R/100 = 5%/100 = 0.05 per year,
putting time into years for simplicity,
12 months ÷ 12 months/year = 1 years,
then, solving our equation
I = 500 × 0.05 × 1 = 25
I = $ 25.00
The simple interest accumulated
on a principal of $ 500.00
at a rate of 5% per year
for 1 years (12 months) is $ 25.00.
WILL GIVE BRAINLIEST PLEASE ANSWER FAST Solve for each indicated angle measure or
variable in the figure.
Answer:
All angles in a triangle sum up to 180 degrees. The value of x is 45 degrees.
Step-by-step explanation:
Which expression is equivalent to 16^2 − 36? (Explain)
A. 4(2 − 3)(2 − 3)
B. 4(2 + 3)(2 − 3)
C. (4 − 6)(4 − 6)
D. (4 + 6)(4 + 6)
Answer:
4(2x-3)(2x + 3)
Step-by-step explanation:
Here, we want to simplify the given expression
we can have;
16x^2-36
= 4(4x^2 -9)
we can use the difference of two squares
where;
a^2 - b^2 = (a-b)(a + b)
= 4(2x-3)(2x+ 3)
Can someone solve this and show work?
Answer:
No habla engles
Step-by-step explanation:
Answer:
x = - 6, x = 4
Step-by-step explanation:
Given
x² + 2x - 24 = 0
Consider the factors of the constant term (- 24) which sum to give the coefficient of the x- term (+ 2)
The factors are + 6 and - 4 , since
6 × - 4 = - 24 and 6 - 4 = + 2 , then
x² + 2x - 24 = (x + 6)(x - 4) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 6 = 0 ⇒ x = - 6
x - 4 = 0 ⇒ x = 4
Write the following expression in expanded form 3(4y+x-8)
For example: 5(x+2) in expanded form would be 5x+5*2.
Answer:
12y+3x-24
Step-by-step explanation:
Simplify:
3 (2x — 2) — 2 (x — 2)
Answer:
4x-2
Step-by-step explanation:
Answer:
4x-2
Step-by-step explanation:
3(2x-2)-2(x-2)
Use the distributive property
6x-6-2x+4Combine like terms
4x-2A model airplane is shot up from a platform 1 foot above the ground with an initial upward velocity of 56 feet per second. The height of the airplane above ground after t seconds is given by the equation h=-16t^2+56t+1 where h is the height of the airplane in feet and t is the time in seconds after it is launched. Approximately how long does it take the airplane to reach its maximum height?
A)0.3 seconds
B)1.8 seconds
C)3.5 seconds
D)6.9 seconds
Answer: I think is none
Step-by-step explanation:
Tbh
Which of these is a correct identity?
x + 4x = 5x
6x = 18
2x + 1 = 7
7x + 9 = x
Answer:
x + 4x = 5x
Step-by-step explanation:
An identity is a mathematical equation that is always true (here - for all possible x's).
a). x + 4x = 5x; this is true, because for any possible x
x+4x = (1 + 4)x = 5x; there's not much to add.
b). 6x=18; evaluates to
x = 3; so it only works for one x, not all possible xs.
c). 2x + 1 = 7
2x = 6
x = 3; so it only forks for one x
d). 7x + 9 = x
6x + 9 = 0; we could compute the exact x it works for from here, but suffice to say this doesn't work for x = 0.
In between these given equations, x + 4x = 5x is the correct identity here.
What is an identity?"An identity is an equality relating one mathematical expression A to another mathematical expression B, such that A and B produce the same value for all values of the variables within a certain range of validity."
Given equations are:
1. x + 4x = 5x
⇒ 5x = 5x
This equation is true for all values of 'x'.
Hence, this is a correct identity.
2. 6x = 18
⇒ x = 3
This equation is true when x = 3.
3. 2x + 1 = 7
⇒ 2x = 6
⇒ x = 3
This equation is true when x = 3.
4. 7x + 9 = x
⇒ 6x = - 9
⇒ x = - 9/6
⇒ x = - 3/2
This equation is true when x = - 3/2.
Learn more about an identity here: https://brainly.com/question/12984949
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Efectúa las siguientes divisiones de monomios
Me ayudan por favor
Answer
c. 20 : 10
F . 30:15
i. 28 : 14
Step-by-step explanation:
what is 2 times 5 minus 1
what is 2 times 5 minus 1?
9
i need help please!!
Graph a line with a y-intercept of 3 and containing the point (2, 5).
To graph a line, plot two points on the line.
Answer:
click on the thanks
Jaxson and his friends went into a movie theater and they want to buy some bags of popcorn and pretzels. Each bag of popcorn costs $5.50 and each pretzel costs $4.00. How much would it cost to buy 4 bags of popcorn and 2 pretzels? How much would it cost to buy bb bags of popcorn and pp pretzels?
Answer:
$22 for popcorn and $8 for pretzels together it would be $30
Step-by-step explanation:
HELP MEE! WILL MARK BRAINLIEST, NEED ALL 4 ANSWERS
Answer:
1. 7 , 2. 4, 3. 29, 4. 71
Step-by-step explanation:
here are 3 number 1 2 4 what it the 4 and 5 terms of the sentance
what% of $700,000 = $525,000
Answer:
$525,000/$700,000×100%=75% is required %.
Which of the following is an arithmetic sequence?
12, 4, 4/3, 16/3 ...
1/2, -1/2, -3/2, -5/2 ...
1/2, -1/2, 1/2, -1/2 ...
2, 4, 8, 16, ...
Answer:
1/2,-1/2,1/2,-1/2
Step-by-step explanation:
hope helpa
WHAT IS THE VALUE OF X PLEASE HURRY!!!!
Answer:
I think 48, since it's an equilateral triangle.
Step-by-step explanation:
Answer:
48
Step-by-step explanation:
cuz its a equilateral triangle
15 1/3 - 5 7/9 = 10 1/3 - 7/9
Answer:
true
Step-by-step explanation:
Pls help! Brainliest!!!A horse has a speed of 10 miles per hour. The horse has traveled 15 miles. How many miles will it travel in total if it rides for another 4 hours?
___ miles
Answer:
10×4 = 40
Given,
already travelled 15 miles
so,
40+15
55 miles
Therefore, The It travels 55 miles
I need help ASAP , I don’t understand this
Answer:
can't see, the pic is too blurry
A rafter makes an angle of 28° with the horizontal. If the rafter is 15 feet long, what is the height at the rafter's peak? Draw a diagram.
The height is 7.04 feet at the rafter's peak that makes an angle of 28° and 15 feet long.
What is angle?An angle is the formed when two straight lines meet at one point, it is denoted by θ.
Given that,
Length of rafter = 15 feet,
Angle made by rafter with the horizontal = 28°
Apply sin formula to determine the length x of the rafter,
sinθ = x / 15
sin28° = x / 15
0.469 = x / 15
x = 7.04
The height of the rafter is 7.04.
To learn more about Angle on :
https://brainly.com/question/28451077
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