y = -4x – 5
y = -2x + 10 solve using substitution show work please
Answer:
(- [tex]\frac{15}{2}[/tex], 25 )
Step-by-step explanation:
Given the 2 equations
y = - 4x - 5 → (1)
y = - 2x + 10 → (2)
Substitute y = - 2x + 10 into (1)
- 2x + 10 = - 4x - 5 ( add 4x to both sides )
2x + 10 = - 5 ( subtract 10 from both sides )
2x = - 15 ( divide both sides by 2 )
x = - [tex]\frac{15}{2}[/tex]
Substitute this value into either of the 2 equations and evaluate for y
Substituting into (2)
y = - 2(- [tex]\frac{15}{2}[/tex] ) + 10 = 15 + 10 = 25
Solution is ( - [tex]\frac{15}{2}[/tex], 25 )
how many significant digits are there in 074.0030
Answer:
Step-by-step explanation:
6 significant digits
only the first zero is not counted.
simplifying radicals pt.2 please help ASAP and explain if possible
Answer: 5√10.
Step-by-step explanation:
250 is split into its prime factors as 2 * 5 * 5 * 5 which implies √250 = √(2 * 5 * 5 * 5). Now we can simplify this further by pulling out the number which is multiplied to itself. This gives √250 = 5 * √(2 * 5) = 5√10. Therefore the square root of 250 is √250 = 5√10.
Which of the following is equal to square root 9•16
O A. 36
B. Square root 9•square root 16
C. 144
D.Square root 9/16
Answer:
Letter B
9.16
...........
.
Rylan is hiking in Death valley. He starts at an elevation of 250 feet above sea level and hikes to an 2300 above sea level. How much did his altitude change?
Answer:
250+2300=2350
10. Look at the diagram. Which of the following is a pair of vertical angles?
Answer:
1 option is correct
Step-by-step explanation:
Angle AOB and DOC is vertically opposite angle
Hallar la pendiente de la recta que atraviesa los puntos (-4, 7) y (2, -8).
4x3
--x-2
A. No Solution
B. (-1,-1)
C. -2,0)
D. (0,3)
Answer:
B. (-1,-1)
Step-by-step explanation:
Both lines are intersecting at this point.
Answer:
B. (-1,-1)Step-by-step explanation:
[tex]y = 4x + 3 \\ y = - x - 2[/tex]
Arrange and solve
[tex] - 4x + y = 3 \\ x + y = - 2 \\( x,y)=( - 1, - 1)[/tex]
(
The rate in the interest formula is given as a percentage, but it must be changed to a
This triangle is being rotated. The square where the three triangles meet is called the
Answer:
center point
Step-by-step explanation:
use quizlet
The coldest temperature ever recorded on Earth is 135.8°F below 0, recorded
in Antarctica on July 21, 1983. The hottest temperature ever recorded
on Earth is 134°F, recorded in Death Valley, California, on July 10, 1913.
What is the difference between those two temperatures?
Answer:
-269.8
Step-by-step explanation:
Below 0 is negative.
Them do -135.8 - 134.
Mr. Smith has an account balance of -$275.78. He deposits $539.20 into his account. What is Mr. Smith's account balance now? *
Answer:
$ 263.42
Step-by-step explanation:
-275.78 + 539.20 = 263.42
The new balance in Mr. smith account will be $263.42.
What is a expression? What is a mathematical equation?A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.We have Mr. Smith has an account balance of -$275.78. He deposits $539.20 into his account.
Assume that the new amount in his account will be [x]. Then -
[x] = 539.20 - 275.78
[x] = 263.42
Therefore, the new balance in Mr. smith account will be $263.42.
To solve more questions on Equations, Equation Modelling and Expressions visit the link below -
brainly.com/question/14441381
#SPJ2
(1.2÷0.375−0.2)/(6 4/25 ÷15 2/5 +0.8) = (0.016÷0.12+0.7)/x
Answer:
x=1/3
read below to find out how I solved!
Step-by-step explanation:
break it down.
First do 1.2÷0.375−0.2 = 1.2.
it is now 1.2/(6 4/25 ÷15 2/5 +0.8) = (0.016÷0.12+0.7)/x
now do 6 4/25 ÷15 2/5 +0.8 = 3
it is now 1.2/3 = (0.016÷0.12+0.7)/x
now do 0.016÷0.12+0.7 and that is 5/6
now you have 1.2÷3 = 5/6 ÷ x
solve for x and you should get x = 1/3!!
Need answer ASAP please hurry??
Answer:
The Car would release over 360 tons of carbon dioxide in 10 years.
36x10 = 360
Step-by-step explanation:
Hope this helps!
simplify. write your answer in standard form.
-4-8x+2x-15
Answer:
x=2
Step-by-step explanation:
i need help with segments
Answer:
∠ DBC = 16°
Step-by-step explanation:
∠ ABD + ∠ DBC = ∠ ABC , substitute values
2x + 15 + x - 30 = 123 , that is
3x - 15 = 123 ( add 15 to both sides )
3x = 138 ( divide both sides by 3 )
x = 46
Thus
∠ DBC = x - 30 = 46 - 30 = 16°
is y = 1/2x + 3 proportional
Answer:
most likely
Step-by-step explanation:
y=1/2x+3
substitute 4
y=2+3=5
substitute 6
y=3+3=6
Find the area of the isosceles triangle
Slope: 13cm
Base: 10cm
Answer:
65
Step-by-step explanation:
A=hbb
2=13·10
2=65
Could someone help me with this math problem. I really need help I have a test tomorrow so I need help with this.
Answer:
A. x ≥ -3 and x < 2, or -3 ≤ x < 2
Step-by-step explanation:
Remember solid dot means include, open dot means not include.
x ≥ -3: this means x is greater and equal (includes) -3.
x < 2: this means x is less than 2 and does not include it.
Answer:
A
Step-by-step explanation:
So on the number line you see a closed circle at -3 and an open circle at 2.
Closed circle represents it's either [tex]\leq[/tex] or [tex]\geq[/tex]. Open circle represents < or >.
So the first part has a closed circle at -3 and goes towards the right side. Since it does that, it would be [tex]x \geq -3[/tex].
The second part has an open circle at 2 and goes towards the left side. Since it does that, it would be [tex]x < 2[/tex].
To combine it together, it would get [tex]-3 \geq x < 2[/tex].
Since option A is [tex]x \geq -3[/tex] and [tex]x < 2[/tex], or [tex]-3 \geq x < 2[/tex], A would be the answer.
Hoped this helped! If not, please let me know and I'll try to explain more! <3
Elizabeth her family's dinner bill was $79.00. How much tip will her family give the waiter, if they tip 23%?
Help me please
Answer:
29.11
Step-by-step explanation:
A dairy cow can produce up to 2,000 gallons of milk every 365 days. At this rate, a cow can produce x gallons of milk in 500 days. Which proportion should be used to find x
Penolope earned $50 dollars in may and she earned $60 in June
what is the percent increase or decrease in penolope´s monthly earnings
Answer:
120
Step-by-step explanation:
y = 3x - 2
x - y = 4
Answer:
x=-1, y=-5
Step-by-step explanation:
y=3x-2 (1)
x-y=4 (2)
sub (1) into (2)
x-(3x-2)=4
x-3x+2=4
-2x=2
x=-1
sub x=-1 into (1)
y=3(-1)-2
=-3-2
y = -5
Therefore: x=-1, y=-5 :))
Answer:
x = -1, y = -5
Step-by-step explanation:
y = 3x - 2
x - y = 4
x - y = 4
x - (3x - 2) = 4
x - 3x + 2 = 4
-2x + 2 = 4
-2x = 2
x = -1
x - y = 4
-1 - y = 4
-y = 5
y = -5
Check:
x - y = 4
-1 - (-5) = 4
-1 + 5 = 4
4 = 4
Find the 17th term of the sequence. -11, -9, -7, -5, ...
Answer:
29
Step-by-step Explanation
Which of the following is not possible for a
system with one quadratic function and one
linear function?
O two solutions
O infinite solutions
O one solution
O no solution
Answer:
infinite solutions
Step-by-step explanation:
with a quadratic and linear system, you can only either get, one, two, or no solution.
The linear function can only pass the quadratic a max of 2 times.
Which set of ordered pairs represents a function?
A. {(5,8), (-8, 2), (-1, -2),(-1, -6)}
B. {(-3,6),(-2,5), (6,2), (-3,7)}
C. {(-2,-2),(-9, -2), (7,-6), (-7, -5)}
D. {(-4,-4),(-8, -1),(4,5), (4,-4)}
Answer:
C
Step-by-step explanation:
each input has exactly one out put... brainliest plssss
I need an answer asap
Answer: The answer is 120
Step-by-step explanation: you add 50+70 and u will get 120
which model represents the equation shown below
-4x+(-2)=3x+(-5)
Answer:
The answer on edge is C
Step-by-step explanation:
Hope I helped
Evaluate the expression: m-3n when m=8, n=2
A. 10
B. 2
C. 14
D. 13
What is the slope of the line shown?
Answer:
M=(-3)
Step-by-step explanation:
Take two points on the line
(5,1) and (2,2)
the equation to find M is y2-y1/x2-x1
2-5=(-3) 2-1=1
(-3)/1=(-3)
Hope this helps =3