You can subtract 2y from both sides of the first equation and then plug that (x = 7 -2y) into the second one to get:
14 - 4y + y = 5 -->
14 - 3y = 5 -->
-3y = -11 -->
y = 11/3 -->
x = 2/3
What is the slope of the two points (-2,7) and (4,-8)
Answer:
-15/6
Step-by-step explanation:
If you look at the first number in each point, the x coordinate, you see the 2nd point is 6 forward from the 1st point. Now the 2nd number is the y coordinate, and you can see it goes down 15 from the 1st coordinate. So y/x is the slope.
Answer: -2 1/2
Step-by-step explanation:
Slope= Yb-Ya/Xb-Xa
In this case= (-8-7)/(4- -2)
This equals -15/6
Simply to -2 1/2
PLEASE HELP MEEE!! 10 points
Answer:
Slope=3/2
Slope=rise/run
Graphing this you go up 3 and to the right 2
Y-intercept= 9
Slope intercept form= 3/2x+9
which means the y-intercept is 9
Could someone help me with this. Than u
Also if u can put it step by step how u do it.
Answer:
X=3,-3
Step-by-step explanation:
Which of the following are solutions to the inequality, 16 < 15 x − 12 ? Select all that apply.
Group of answer choices
-26
3.25
1.8
22/17
28/15
1.86
1.87
25/7
Answer:
25/7, 1.87, 3.25, and 22/7
Step-by-step explanation:
16 < 15x - 12
__________
+12. +12
__________
28 < 15x
__________
÷15 ÷15
__________
28/15 < x
__________
x > 28/15
__________
this is true for any number greater than 1 and 13/15 = 1.8666......
Which of the following expressions is modeled on the number line?
Answer:
2 x 3
Step-by-step explanation:
Since it starts at and goes right twice in intervals of 3, you can conlude that the answer would be 2 x 3 because it corresponds with the previous numbers stated.
Given: -4x + 2y = 8
Prove: y = 4 + 2x
Answer:
Step-by-step explanation:
-4x+2y=8
2y=8+4x
y=[tex]\frac{8+4x}{2}[/tex]
y=[tex]\frac{2(4+2x)}{2}[/tex]
y=4+2x
proved
b)simplify the expression
7x2 + 4x – 2 + 8x2 – 9x – 5
Answer:
=25x-7
Step-by-step explanation:
what is the total area of the three triangle ?
Answer b. 13 square units
Pls I really need help
Answer:
Greater
Step-by-step explanation:
5x + 8 - 7x = -4x + 1
Choose 1 answer:
А
No solutions
Exactly one solution
Infinitely many solutions
Step-by-step explanation:
5x+8-7x=4x+1
5x+7x-4x=8+1
8x=9
Help plsssss!!!!!!!!!!!!!
Answer:
The second option
Step-by-step explanation:
4) Find the LCM of 20 and 9
Answer:
least common multiple is 180
What value of x makes this equation true? 2(4x-3) - 8= 4+2x
Answer:
What value of x makes this equation true? 2(4x-3) - 8= 4+2x HERE YOU GO!!
Step-by-step explanation:
We need to eliminate one of the variables to solve the other.
4x+5y = 8
2x-3y = 18
I will multiply the second equation by -2.
-2*(2x-3y = 18)
-4x + 6y = -36 and then add the two equations
4x + 5y = 8
-4x + 6y = -36
+ adding here
11y = -24
y = -24/11
substitute x in one of the equations to find y.
2x-3y=18
2x - (3*-24/11) = 18
2x = 126/11
x = 126/22
State the domain of f•g. Then find f•g, including any additional restrictions necessary on the domain of the composition
Answer:
Answer is option A
Step-by-step explanation:
The required function [f o g(x)] is -7/√(x + 3).
The domain of the function [f o g(x)] > - 3.
What is a function?A function is the relation between two sets. The first one is called domain and the second one is called range.
Given, f(x) = - 7/x
g(x) = √(x + 3)
Therefore, f o g(x)
= f[g(x)]
= f[√(x + 3)]
= -7/√(x + 3)
Now, the domain of f o g(x) > - 3.
Learn more about a function here: https://brainly.com/question/12396459
#SPJ3
Find the measures of the sides of triangle DEF, then classify it by its sides. YOU MUST SHOW WORK TO GET CREDIT!
D(-2, 3), E(5, 5), F(-4, 10)
Answer:
FE = 10.30
ED = 7.62
FD = 7.28
Step-by-step explanation:
First, use coordinate system to draw a square that each angle of triangle reach the sides of the square, then use Pythagoras theory to find the length of the sides(c^2=a^2+b^2)
FE = root(9^2+5^2) = root(106) = 10.30
ED = root(3^2+7^2) = root(58) = 7.62
FD = root(2^2+7^2) = root(53) = 7.28
A bag had 7 orange rocks , 6 green rock , 1 white rock ,7 black rocks , and 2 yellow you randomly pull a rock from the bag ,keep it out , and then pull out another one .
What is the probability of getting a yellow rock and then a n orange rock ?
Answer:
[tex]Probability = \frac{7}{253}[/tex]
Step-by-step explanation:
Given
[tex]Orange = 7[/tex]
[tex]Green = 6[/tex]
[tex]White = 1[/tex]
[tex]Black = 7[/tex]
[tex]Yellow = 2[/tex]
Required
Probability of selecting a yellow then orange rock
From the question, we understand that the probability is that of without replacement.
Since the yellow, is first picked.
We need to determine the probability of picking a yellow rock, first.
[tex]P(Yellow) = \frac{n(Yellow)}{Total}[/tex]
[tex]P(Yellow) = \frac{2}{7 + 6 + 1 + 7 + 2}[/tex]
[tex]P(Yellow) = \frac{2}{23}[/tex]
The rock has reduced by 1;
Next is to determine the probability of picking an orange rock
[tex]P(Orange) = \frac{n(Orange)}{Total - 1}[/tex]
[tex]P(Orange) = \frac{7}{7 + 6 + 1 + 7 + 2- 1}[/tex]
[tex]P(Orange) = \frac{7}{22}[/tex]
The required probability is calculated as thus:
[tex]Probability = P(Yellow) * P(Orange)[/tex]
[tex]Probability = \frac{2}{23} * \frac{7}{22}[/tex]
[tex]Probability = \frac{14}{506}[/tex]
[tex]Probability = \frac{7}{253}[/tex]
Which correctly applies the distributive property to show an equivalent expression to (–2.1)(3.4)? (2)(3) – (0.1)(0.4) (–2)(3) + (–0.1)(0.4) (2.1)(3) – (2.1)(0.4) (–2.1)(3) + (–2.1)(0.4)
Answer:
d i hope
Step-by-step explanation:
good
Answer:
I think it is c
Step-by-step explanation:
hope this helps
REFLECT - How many triangles and how many rectangles are in a net for a right triangular
prism? How do you know?
Answer:
2 triangles and 3 rectangles
Step-by-step explanation:
Because all triangular prisms have 2 triangle faces and 3 rectangle faces
Bobby and his brother had 3/4 of a pizza leftover after dinner. Their father came home and are 1/2 of the leftover pizza .how much pizza did their father eat
Answer:
3/8 of the pizza
Step-by-step explanation:
3/4*reciprocal of 2
3/4*1/2
3/8
3/8
3/4÷1/2= 0.375
0.375= 3/8
5t + 15 ≥ 50
What's the answer?
Answer:
Subtract 15 from both sides.
5t > 35
Divide both sides by 5.
t > 7
(Sorry, I can't do the > with the _ under it.)
Please mark me Brainliest; I need it to move onto the next level. =D
parker wants to price the total cost of a new coat the coat cost $15.99 plus taxes there is a 7% tax on the coat how much taxes will she have to pay
Answer:
$17.11
Step-by-step explanation:
15.99*1.07 = 17.109 round up and you get 17.11
Determine the zeros or roots of each function or equation. You can use the quadratic equation if you need to.
f(x)=-8x^2+2x+1
Question 1
A research lab studied the effects that temperature has on the
growth of a certain plant. At 60°F, the plant grows 1.25 cm
per week. At 80°F, the plant grows 2.75 cm per week. How
fast can we expect the plant to grow at 72°F in one week?
A. 1.36 cm
B. 1.5 cm
C. 2.15 cm
D. 2.48 cm
How to solve this problem because I have no clue in what I’m doing here plz help
Answer:
Step-by-step explanation:
Be cool
help pleaseeeeee thanks .
is-2 a solution of the inequality -2x+5__> 9 ?
Answer:
Yes
Step-by-step explanation:
-2 plugged into x would give you 4 then 4 + 5 is 9
PICTURE PROVIDED JUST TELL ME IF IT IS A FUNCTION AND WHY
Answer:
This is a function because the Y values do not repeat.
(x/x+1) - (2x+1)? how do i do this people?
Answer:
x=1
Step-by-step explanation:
I need help please the faster the better.
Answer:
(5,-8)
Step-by-step explanation:
You would go to the right then down 8
Answer: plot a point at (0, -8) (1, -5) (2, -2) (-1,-12) and draw a straight line connecting them
Step-by-step explanation: plug in points to the equation and solve
Which numbers are rational?
-8 , 6 , 0 , 19/8 , 4.35 , 7/4
Answer:
-8, 6, 0, 19/8, 4.35, 7/4 all of them
Step-by-step explanation:
hope this helps! :)
In ΔXYZ, z = 46 cm, x = 45 cm and ∠Y=81°. Find the length of y, to the nearest centimeter.
Answer:
If the question is supposed to be solved using the pythagorean thorem, y≈64.35
Answer:
59
Step-by-step explanation: