7th grade math 10 points
1.) jill began to solve an equation.
which expression below shows the next step jill needs to take?
jill’s solution:
y divided by (2)=4.5
y divided by (2)*(2)
a.
4.5 • (–2)
b.
4.5 ÷ (–2)
c.
4.5 + (–2)
d.
4.5 – (–2)
a. we have two
lines: y = 4x and
y = 8x^1
given two simultaneous equations that are both to be
true, then the solution is the points where the lines cross. the intersection is
where the two equations are equal. therefore the solution that works for both
equations is when
4x = 8x^1
this is where the two lines will cross and that is the
common point that satisfies both equations.
b. 4x = 8x^1
x 4x 8x^1
3 7
8.33
2 6 8.5
1 5 9
0 4

1 3
7
2 2
7.5
3 1 7.67
the table shows that none of the x values from 3 to 3 is
the solution because in no case does
4x = 8x^1
to find the solution we need to rearrange the equation to
find for x:
4x = 8x^1
multiply both sides with x:
4xx^2 = 8x1
x^2+4x1=0
x= 4.236, 0.236
therefore there are two points that satisfies the
equation.
find y:
x=4.236
y = 4x = 4 – (4.236)
= 8.236
y = 8x^1 = .236)^1
= 8.236
x=0.236
y = 4x = 4 – (0.236) = 3.764
y = 8x^1 = 8(0.236)^1
= 3.764
thus the two lines cross at 2 points:
(4.236, 8.236) & (0.236, 3.764)
c. to solve
graphically the equation 4x = 8x^1
we would graph both lines: y = 4x and y
= 8x^1
the point on the graph where the lines cross is the
solution to the system of equations.
just graph the points on part b on a cartesian coordinate
system and extend the two lines. the
solution is, as stated, the point where the two lines cross on the graph.
stepbystep explanation:
mark brainliest!
answer: ♡♡♡♡♡♡♡♡♡♡
stepbystep explanation:
x + 4/7
stepbystep explanation:
use cymath
...
 What type of graph would you use to compare the prices of Felix's books and of Tyler's books? In two or more sentences, explain your choice. bar graph line graph scatter plot hist...
 Which quadratic function is represented by the graph?...
 Que es una proporcionalidad sos...
 1. 4 pound of nails are to be packed in 12 bags. how many pound are in each bag? 2. A 2:15 scaled pattern for a mural is 10 feet long. how long will the mural be?...
 Calculate 5/10÷9 please...
 How to interprete inequality...
 NEED HELP ASAP!! *will mark brainlist* Question: State the order and type of each transformation of the graph of the function f(x)=4(x+9)^2 as compared to the graph of the base fu...
 1 1/4 x 3 5/6 need helppp...
 Which of the following is a proper way to enter an answer of 1.666 on the SAT SPR answer grid? A 1/66 B 1.67 C 1.66 D 1.666...
 What is the area of the rectangle? answers: 120 m 120 m2 120m3 120 cubic meters top of the rectangle: 12 m bottom of the rectangle:12 m side of the rectangle: 10 m side of th...