x = −3y + 17 2x − y = −1
Answer:
Step-by-step explanation:
wdqwdwq
Answer:
y = 5 and x = 2
Step-by-step explanation:
Since we have x = -3y + 17, we're going to substitute this equation into the x-value in the second equation.
2(-3y + 17) - y = -1
Multiply the 2 with the terms within the parentheses.
-6y + 34 - y = -1
Add the y values.
-7y + 34 = -1
Subtract 34 from both sides.
-7y = 35
Divide each side by -7.
y = 5
Now that we know the value of y, we can substitute 5 for the y-value in the first equation.
x = -3(5) + 17
Multiply.
x = -15 + 17
Add the two terms together.
x = 2
Hope this helped!
expression equal to 0.30 examples
Answer:
0.3 ? I'm not sure sorry.
1. Express 30 out of 40 and 40 out of 50 as a percentage. Which is
the better score?
Answer:
30 out of 40: 75%
40 out of 50: 80%
40 out of 50 is the better score
For what value of x is g(x) = - 8?
Answer: g=
−8
x
Step-by-step explanation:
marco puts 1,200 into a saving account that 5% interest per year. if he make no deposits or withdrawls how much money will be in his account afer 1 year
Answer:
1260
Step-by-step explanation:
1200 times 1.05 to get 5% interest added
How do you sovle 5x-4+7x=5(2x-4)
Answer:
x = -8
Step-by-step explanation:
5x - 4 + 7x = 5(2x - 4)
12x - 4 = 10x - 20
+20 +20
12x + 16 = 10x
-12x -12x
16 = -2x
divide by -2
x = -8
Answer:
x = -8
Step-by-step explanation:
5x - 4 + 7x = 5(2x - 4)
12x - 4 = 10x - 20
+20 +20
12x + 16 = 10x
-12x -12x
16 = -2x
divide by -2
x = -8
PLEASE HELP ME ON MATH ASAP
Answer: the answer is 4
Step-by-step explanation: 3x4 is 12 so 12-(2+4)=6
What is the solution to the system of equations? One-fourth x minus one-half y = 8 One-half x + three-fourths y = negative 5 (–8, –12) (–8, 12) (8, 12) (8, –12)
Answer:
Step-by-step explanation:
x/4-y/2=8, x-2y=32, x=32+2y
x/2+3y/4=-5, 2x+3y=-20, x=(-20-3y)/2
32+2y=(-20-3y)/2
64+4y=-20-3y
7y=-84
y=-12, since x=32+2y
x=32+2(-12), x=32-24=8
So the solution is the point (8, -12)
Answer:
its (8, -12)
Step-by-step explanation:
I did the test but if you need to show your work then im sorry lol i did it in my head
what is the area of the figure below
Answer:
390cm
Step-by-step explanation:
1. find area of rectangle
1. 15cm x 20cm= 300 cm
2. find area of triangle
1. 1/2 (12 x 15)= 90cm
300+90
Can someone help me pleasee!! question 10 help a girl out :)
Answer:
52
Step-by-step explanation:
just finished taking it
Answer:
no
Step-by-step explanation:
Given that f(x)=3x2+2x-1 and h(x)=3x-5, find f(4)-h(5)
Answer:
45
Step-by-step explanation:
f(4) = 3(4²) + 2(4) -1
f(4) = 48+8-1 or 55
h(5) = 3(5)-5
h(5) = 10
55-10=45
How do you write square root of -20 using the imaginary i
Answer:
Step-by-step explanation:
i² = (-1)
[tex]\sqrt{-20} =\sqrt{20i^{2}}\\\\=\sqrt{2*2*5*i^{2}}\\\\=2i\sqrt{5}[/tex]
3 (n - 4) = 36
please show work if you can
Answer:
n=16
Step-by-step explanation:
3 (n-4) = 36
3n -12=36
add twelve to both sides. because -12 + 12 is 0. and once you are at zero, you can cancel it out.
3n=48
divide by 3 on both sides
n=16
proportions in triangles
solve for x
Answer:
Step-by-step explanation:
x/15=6/12
x=15(6)/12
x=7.5
Jackie is taking a week-long football class. The first day, she gains 6 yards on her only possession of the football. On the second day, she quarterbacks for 3 plays and gains 6 yards on each play. What is the total number of yards Jackie gained?
Answer:
24
Step-by-step explanation:
6 x 3 = 18 + 6= 24
A movie theater charges 8.00 for students tickets and 4.00 for popcorn. ike spent 52.00 total for tickets and three bags of pop corn.how many students tickets did he purchase.
Answer:
5 students
Step-by-step explanation:
the problem can be represented by this equation:
[tex]8x+4(3)=52[/tex]
[tex]8x+12=52[/tex]
subtract [tex]12[/tex] from both sides
[tex]8x=40[/tex]
divide both sides by [tex]8[/tex]
[tex]x=5[/tex]
plz mark me brainliest. :)
plss help
why is 2/4 a rational number
Answer:beucase its 0.5 and it doesnt keep going like pie for its rational beucase it has a stop.
Step-by-step explanation:
Answer:
because its a fraction
Step-by-step explanation:
all fractions, decimals, and percentages that don't equal a whole number are rational.
Starli makes bead bracelets. She has two bags of
beads. The first bag contains 11 gold, 10 silver,
and 9 brass beads. The second bag contains 7 red,
9 blue, 5 green, a 4 pink beads. What is the
probability that, nout looking, Starli will select
a silver bead from tne first bag and a blue bead
from the second bag?
Answer:
Could be because in the first bag there is 10 silver and 9 blue,and both have very close numbers.
Step-by-step explanation:
Im not 100% sure but both the blue and silver have almost the same amount of beads. so the probability could be 75%-90% posible.
:/ Again, Im not so sure about this.
Which equation has a slope of –52 and a y-intercept of –2?
A. –5x – 2y = –4
B. –5x – 2y = 4
C. 5x + 2y = 4
D. 5x + 2y = –4
Answer:
I'm sure there might be a typo in the question (AKA the slope is -5/2)
but the answer would be
D
Step-by-step explanation:
y= mx+ b
where m is the slope, and b is the y intercept
y= -52x -2
..........
5x + 2y = –4
2y= -5x -4
y= - 5/2x -2
[tex]y = - \frac{5}{2} x - 2[/tex]
Which of the following is equivalent to the expression 3(2x + 2)? Select all that apply.
DA. 3x + 6 + 3x
B. 6x + 1
OC. 6x + 6
An online store charges a few of $4.50 for shipping. There is an additional charge of $0.50 for each pound the item weighs. How much does the store charge to ship a hammock that weighs 10.54 pounds?
Answer:
The store charges $9.77 to ship a hammock that weighs 10.54 pounds.
Step-by-step explanation:
4.50 (shipping cost)
0.50 (per 1 pound)
w = weight in pounds
w=10.54
4.50+0.50w= total cost
sub in 10.54 for w
remember order of operations (PEMDAS)
4.50 + 0.50 (10.54) = 4.50 + 5.27 = 9.77
The store charges $9.77 to ship a hammock that weighs 10.54 pounds.
Solve the system of linear equations by elimination
x+2y=6
-x-3y=-7
*inhale* REEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
GIVING BRAINEST FOR THE PERSON WHO GETS THIS RIGHT
The table represents a linear function.
x y
-5 -4
-2 2
1 8
3 12
Identify the intercepts of the line.
Write the equation of the line in standard form.
Help!!! Please help me I need help on my homework!
Answer: First you have to figure out what the decimal is as a fraction, which is 3/50.
Step-by-step explanation:
You take 0.06 and you use a fraction calculator and you put in the decimal and hit enter. Your answer is 3/50
I need to solve for y??? Please help! Very much appreciated!!
Answer:
Step-by-step explanation:
Sin (48) = Y/7
7 sin (48) =y
7* (.743) = 5.2
For which function would f(3) = 17
A)f(x) = 3x+6
B)f(x) = 2(x + 4)+3
C) f(x) = 5x
A function is defined as a relation between a set of inputs having one output each.
The function that would give f(3) = 17 is
f(x) = 2 ( x + 4 ) + 3
What is a function?A function is defined as a relation between a set of inputs having one output each.
We have,
f(3) = 3x + 6
Substitute x = 3
f(3) = 3 x 3 + 6 = 9 + 6 = 15
f(x) = 2 ( x + 4 ) + 3
Substitute x = 3
f(3) = 2 ( 3 + 4 ) + 3 = 2 x 7 + 3 = 14 + 3 = 17
f(x) = 5x
Substitute x = 3
f(x) = 5 x 3 = 15
We see that f(x) = 2 ( x + 4 ) + 3 gives the 17 at x =3.
Thus the function that would give f(3) = 17 is
f(x) = 2 ( x + 4 ) + 3
Learn more about functions here:
https://brainly.com/question/26885907
#SPJ2
Please help and quick thanks
Answer:
C. 2x^2 - 14x +7
Step-by-step explanation:
Here is a picture of the answer.
A bag contains only red marbles and blue marbles in the ratio of 3 red to 2 blue.
If there are 24 red marbles, how many blue marbles are there?
Plz help me :)
Answer:
16
Step-by-step explanation:
create a t chart on one side put 3 and on the other put 2.
times 3 by 8 (you'll get 24) and then times 2 by 8 (you'll get 16.
What is the greatest common factor of 3x^2+3x
Answer:
3x
Step-by-step explanation: