Here is an equation: 4x−4=4x +__
Select what you could have in the blank so the equation would be true for:
a. No values of x: , (-4, 19, -4x)
b. All values of x: , (-4, 19, -4x)
c. One value of x: , (-4, 19, 4x)
----------------------------------------------------------------------------------------------------Please help I am beyond stumped on this. I don't even know what they're saying!
if you put -4 in there you have
4x - 4 = 4x - 4
that works for any old value of x
If you put 19 in there
4x−4=4x + 19
0 = 23 works for nothing
if you put -4 x in there then
4x−4=4x -4x
4 x - 4 = 0
x = 1 finally a single solution
I gave you the answers
for example for C. you need one solution
I said :
==============================
if you put -4 x in there then
4x−4=4x -4x
4 x - 4 = 0
x = 1 finally a single solution
============================
so you need -4x for C.
of course you have a typo or something and -4x is not one of your choices for C., but it should be.
The only think that makes the equation true is -4 because both sides have to have the exact same things. So the answer is A.
No problem! Let's break down the equation and analyze each option to see which one makes the equation true.
The given equation is 4x - 4 = 4x + __. We need to find the missing value that will make this equation true.
To solve this, we can start by simplifying the equation. Notice that we have 4x on both sides, which means they cancel out when we subtract them. Therefore, the equation simplifies to -4 = __.
Now let's analyze each option:
a. No values of x: This means that we cannot find any value of x that would make the equation true. However, in our simplified equation -4 = __, we can see that -4 is a valid value that satisfies the equation. So, this option is not correct.
b. All values of x: This means that any value of x would make the equation true. However, when we substitute any value of x into the simplified equation -4 = __, the only value that satisfies the equation is -4. So, this option is not correct either.
c. One value of x: This means that there is only one specific value of x that would make the equation true. In our simplified equation -4 = __, the only value that satisfies the equation is -4. So, this option is correct.
Therefore, the correct answer is: c. One value of x: (-4)
By analyzing the simplified equation and understanding the concept of equations, we can determine which option makes the equation true.
i figured it was a typo, thats actually how it is in the assignment lol,
1.
(07.01 LC)
Which of the following values in the set below will make the equation 3x + 5 = 8 true? (Only input the number.)
{0, 1, 2, 3, 4} (1 point)
2.
(07.01 MC)
Fiona needs $62 to go on a field trip. She has saved $10.50. She earns $6.50 per hour cleaning her neighbor's garden, and she earns $5.25 per hour selling cakes at a store. Can Fiona go on the field trip if she works at the garden for 6 hours and at the store for 2 hours?
(Use the inequality 6.50x + 5.25y + 10.50 ≥ 62.) (1 point)
Yes, because the total will be $64
Yes, because the total will be $68
No, because the total will be $58
No, because the total will be $60
3.
(07.01 MC)
A set of numbers is shown:
{0, 2.6, 4.2, 5, 10, 15}
Which of the following shows all the numbers from the set that make the inequality 5x + 3 ≥ 28 true? (1 point)
{10, 15}
{0, 2.6, 15}
{5, 10, 15}
{0, 2.6, 4.2, 5}
4.
(07.02 LC)
Kazan recycles 9 plastic bags every week. Which expression shows the total number of plastic bags he recycles in w weeks? (1 point)
9w
w over 9
9 + w
9 + 9w
5.
(07.02 MC)
Sasha bought shoes for $38.88 and x pairs of socks for $1.87 each. Which expression shows the total money spent? (1 point)
38.88 + 1.87x
38.88x + 1.87
38.88x + 1.87x
38.88 + 1.87 + x
6.
(07.02 MC)
Milo's age is 9 years less than 5 times Pearl's age. If Pearl's age is x years, which expression best shows Milo's age? (1 point)
5x - 9
4x
x - 4
9x - 5
7.
(07.03 LC)
What is the solution to the equation x + 7.5 = 28.5? (1 point)
3.8
21
36
213.75
8.
(07.03 MC)
Erick, Tyson, and Lane together sold 90 tickets for the school banquet. Erick sold 38 tickets, and Tyson sold 24 tickets. How many tickets did Lane sell? (1 point)
12
14
19
28
9.
(07.03 MC)
Jess has $67 to spend. He buys shoes for $39.95 and a pair of socks for $2.03. Jess buys a bag with the remaining money. How many dollars does Jess spend on buying the bag? (1 point)
$19.97
$25.02
$41.98
$65.85
10.
(07.04 LC)
The solution to 15x = 30 is x =
. (Only input the number.) (1 point)
11.
(07.04 LC)
What is the solution to the equation 1 over 3 multiplied by n equals 6 ? (1 point)
n = 3
n = 9
n = 18
n = 216
12.
(07.04 MC)
What is the solution to the equation 1 over 56 multiplied by x is equal to 1 over 8 ? (1 point)
x = 448
x = 64
x = 48
x = 7
13.
(07.06 LC)
If the least value of n is 5, which inequality best shows all the possible values of n? (1 point)
n ≥ 5
n ≤ 5
n < 5
n > 5
14.
(07.06 MC)
Ezra needs at least $37 to buy some books. She already has $25. Which graph best represents all the possible dollar amounts that Ezra can save to buy the books? (1 point)
Number line graph with open circle on 0 and 12 and shading in between.
Number line graph with closed circles on 0 and 12 and shading in between.
Number line graph with open circle on 12 and shading to the right.
Number line graph with closed circle on 12 and shading to the right.
15.
(07.06 MC)
A group of students must collect at least $160 to organize a science fair. They have already collected $20. Which graph best represents the possible amounts of money the students still need to collect? (1 point)
Number line graph with closed circle on 160 and shading to the right.
Number line graph with closed circle on 140 and shading to the right.
Number line graph with closed circle on 20 and shading to the right
Number line graph with closed circle on 180 and shading to the right.
16.
(07.07 LC)
A cheetah runs at a speed of 45 miles for every hour. If the distance traveled, in miles, is d and time, in hours, is t, which equation shows the relationship between d and t? (1 point)
t = 45d
d = 45 + t
t = 45 + d
d = 45t
17.
(07.07 MC)
A recipe requires 7.5 teaspoons of sugar to make a serving of mousse. Which equation shows the number of teaspoons of sugar, y, needed to make x servings of mousse? (1 point)
x = 7.5y
y = 7.5x
y = 7.5 + x
x = 7.5 + y
18.
(07.08 LC)
The table below shows the values of y for different values of x:
x y
0 0
1 4
2 8
3 12
Which equation shows the relationship between x and y? (1 point)
x = 4y
y = 4 + x
y = 4x
x = 4 + y
19.
(07.08 MC)
The graph below shows the price, y, in dollars, of different number of pounds of dried coffee, x:
A graph titled Dried Coffee Prices shows Number of Pounds on x axis and Price in dollars on y axis. The scale on the x axis shows numbers from 0 to 12 at increments of 2, and the scale on the y axis shows numbers from 0 to 60 at increments of 10. A straight line joins the ordered pairs 0, 0 and 12, 60
Which equation best represents the relationship between x and y? (1 point)
y = x + 10
y = 10x
y = x + 5
y = 5x
20.
(07.08 HC)
The graph below shows the distances, in miles, that a dragonfly can travel in a certain number of hours:
A graph titled Motion of a Dragonfly shows Time in hours on the x axis and Distance in miles on the y axis. The scale on the x axis shows number from 0 to 10 at increments of 2, and on the y axis, the numbers are shown from 0 to 330 at increments of 66. A straight line joins the ordered pairs 0, 0 and 2, 66 and 4, 132 and 6, 198
Based on the graph, what is the dependent variable, what is the equation relating the two variables, and how far will the dragonfly travel in 24 hours if it continues to fly at the same speed? (1 point)
The dependent variable is distance, the equation is y = 33x, and the dragonfly will travel 792 miles.
The dependent variable is distance, the equation is x = 33y, and the dragonfly will travel 1,056 miles.
The dependent variable is time, the equation is y = 33x, and the dragonfly will travel 792 miles.
The dependent variable is time, the equation is x = 33y, and the dragonfly will travel 1,056 miles.
Which of the following values in the set below will make the equation 3x + 5 = 8 true? (Only input the number.)
{0, 1, 2, 3, 4} (1 point)