Answers
Answer:
x = 574 and x = - [tex]\frac{3}{4}[/tex]
Step-by-step explanation:
(1)
0.25x = 143.5 ( isolate x by dividing both sides by 0.25 )
x = 574
(2)
- 4x + [tex]\frac{1}{2}[/tex] = 3 [tex]\frac{1}{2}[/tex] ( subtract [tex]\frac{1}{2}[/tex] from both sides )
- 4x = 3 ( divide both sides by - 4 )
x = - [tex]\frac{3}{4}[/tex]
x = 574, How did I get this answer? I simply divided 143.5 by 0.25 and you get 574, which will be the missing number (also known as x.)
But, before you write this down as your answer - how can we check if 574 is correct?
Well we're going to have to do the reverse of dividing, which'll be multiplying.
Multiply 0.25 by 574! (It does equal 143.5), Therefore, you have checked your answer and now you know it is correct.
#2. -4x + [tex]\frac{1}{2}[/tex] = 3This equation simplifies to [tex]\frac{2x-1}{4} = \frac{7}{2}[/tex]. Let's go on ahead and figure this problem out step-by-step!
First, we have to cross multiply. As shown here:
(2x-1) × (2) = 7 × 4x
4x - 2 = 28x
After that, we're going to have to subtract 28x from both sides of the equation.
4x - 2 - 28x = 28x - 28x
-24x - 2 = 0
Next, add 2 to both of the sides.
-24x - 2 + 2 = 0 + 2
- 24x = 2
On your last step before finding out what x is, the final thing we've got to do is divide both sides by -24.
[tex]\frac{-24x}{24} = \frac{2}{-24}[/tex]
x = [tex]\frac{-1}{12}[/tex]. This is your solution for #2.
If this was helpful to you, please give a thanks and rate it! Also please mark brainliest if it was all correct and helped you. :) I'd really appreciate it, have a good day!
Related Questions
Which equation and solution represents each situation!
7. What number is 32% of 79?
A.n= 32.79: 2.528
B.32 = n. 79: 0.4
C.79=n.0.32: 246.9
D.n-0.32.79; 25.3
Answers
Answer:
If they're asking you to round, I'll choose D just because 25.28 is 25.3 rounded to the nearest tenth.
Step-by-step explanation:
79/x=100/32
(79/x)*x=(100/32)*x - we multiply both sides of the equation by x
79=3.125*x - we divide both sides of the equation by (3.125) to get x
79/3.125=x
25.28=x
x=25.28
I don't understand this
Answers
Answer:
y=2/3x+3
Step-by-step explanation:
First, you would use the point slope formula : y₂-y₁/x₂-x₁
(5--3)/(3--9)
=8/12
=2/3
Then you would plug it back into the equation along with one of the points. Ex:
-3=2/3(-9)+b
-3=-6+b
3=b
So in conclusion, the formula would come out to y=2/3x+3
Hope this helps! :)
Graph this line using the slope and y-intercept:
y=9/10x+1
Answers
Answer:
Step-by-step explanation:
y=mx+b
m is slope
b is y-intercept
slope is 9/10
y-intercept is 1
Here is a really fun assignment which my friend gave me:
Use the numbers below to get 6. You can use any operation, but you can't use ANY other numbers.
2,2,2 =
3,3,3 =
4,4,4 =
5,5,5 =
6,6,6 =
7,7,7 =
8,8,8 =
9,9,9 =
Answers
Answer:
2x2 = 4 + 2 = 6.
Step-by-step explanation:
f(n) = -n^3 – 4ng(n) =
-n +4Find: f(n) +g(n)
Answers
Answer:
-n^3 – 5n + 4
Step-by-step explanation:
f(n) = -n^3 – 4
g(n) = -n +4
f(n)+ g(n) = (-n^3 – 4n)+(-n +4)
= (-n^3 – 4n -n +4)
= -n^3 – 5n +4
(92 - 12) – 4 = 2 (2 + for
4.0)
I
Answers
Answer:
Step-by-step explanation:
(92 - 12) – 4 = 2 (2 + for
4.0)
I
Selina has $50. She wants to buy some donuts which cost $2.80 each. How many donuts can she buy?
Answers
Answer:
50/2.80= 17
17 dounuts
Kailey correctly graphed the opposite of –3.3 on the number line.
A number line going from negative 5 to positive 5. Point A is between negative 4 and negative 3, point B is between negative 3 and negative 2, point C is at 3.3, and point D is at 3.9.
Which point could be the point Kailey graphed?
Answers
The number line shows that Kailey could have graphed the point C (3.3).
Number LineThe number line is the graphic representation of real numbers whose center is represented by the number zero (0). The negative numbers are on the left side of the number line, on the other hand, the positive numbers are written on the right side. See the attached image.
Opposite NumbersOpposite numbers are numbers that the distance to 0 is equal. The numbers are classified as the opposite when the sum between them is equal to zero (0).
STEP 1 - Plot the number linePlot the number line with the given limits: -5 to 5. See the attached image.
STEP 2 - Plot the given points in the number linePlot the points A, B,C an D in the number line drawn in step 1. See the attached image.
STEP 3 - Analyse the plotted number lineLike the point graphed is the opposite of -3.3, Kailey could have plotted the point C which is at 3.3 since the sum between -3.3 and 3.3 is equal to zero (0).
-3.3+3.3 =0
Read more about opposite numbers here:
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-6a +3 =-3(2a-1) question number 2
Answers
Answer:
D. identity
Step-by-step explanation:
- 6a + 3 = - 3(2a - 1)
First, distribute -3 within the parenthesis.
- 6a + 3 = - 6a + 3
Subtract 3 from both sides of the equation
- 6a = - 6a
Divide - 6 on both sides of the equation
a = a
We know because both sides have the same equation, and that it is true, that this equation has infinite solutions, so the answer would be D. Identity
For those who don't know, identity in algebra means that the equation is true no matter what is substituted in for the variable. It will always be true.
I hope that this helps! :)
9 = -d + 17
A.-2
B.8
C.10
D.-8
Answers
9= -d+17
9 - 17 = -d + 17 - 17
-8 = -d
Then divide.
-8/1 = -d-1
Cancel terms that are in both numerator and denominator
Answer:
8 = d
Question 10
M
19. The area of the rectangle shown is 225 square
centimeters
A=bh
25 cm
What is h, the height of the rectangle in
centimeters?
06:02
Answers
Answer:
8 on edge 2020
Step-by-step explanation:
Manny says that the diagram shows a centroid. Is he correct? Why or why not?
Answers
Answer:
WAT! What diagram???
Step-by-step explanation:
Answer: No, because the center pod is where the medians meet
i really need help!!!! i need answer to c:
Answers
Answer:
76.3
Step-by-step explanation:
Answer:
C = 75°
Step-by-step explanation:
The interior angles of a triangle will always add up to 180°, so all we have to do is find the missing variable.
To do this, we first add up the two angles we do know.
—> 65 + 40 = 105
Now that we have the total of the other two angles, simply subtract 105 from 180.
—> 180 - 105 = 75
We now have our answer!
graph y = 4x-9 please
Answers
Step-by-step explanation:
Just take two random points, always remember ,take x=0 and find his correspondent y
in this case y=4*0-9=-9
first point (0,-9)
second one:
take any x you want, I took 2 randomly, and y will be
y=4*2-9=8-9=-1
second point is (2,-1)
find these points on graph and connect them with a ruler ! And that is the line you are searching for!
We want to graph the line y = 4*x - 9.
The graph can be seen at the end of the answer.
To graph a given linear function, we need to find two points that belong to the function, and then connect them with a line.
To find the points we just evaluate the function in two different values of x, so let's do that.
For x = 0 we have:
y = 4*0 - 9 = -9
Then we have the point (0, -9)
For x = 1 we have:
y = 4*1 - 9 = 4 - 9 = -5
Then we have the point (1, -5)
Now we just can graph these two points on a coordinate axis, and connect them with a line.
The graph is shown below
If you want to learn more, you can read:
https://brainly.com/question/18196858
Select the better deal in the pair. Then give the unit rate for the better deal.
$21/5 gal or $81.05/20 gal?
Answers
The unit rate for 21/5 is:
4.2:1
And the better deals unit rate is:
4.06:1
answer in scientific notation :(7.5x10^10)x(4.9x10^7)
Answers
Answer:
3.675 × 10^18
Step-by-step explanation:
What do you have to increase a number by to change it's place value
Answers
Answer:
Build more buildings
Step-by-step explanation:
Answer:
change by a tenth to hundredth to thousandth to the millionth
Step-by-step explanation:
Determine whether the graph could be the graph of a polynomial function. If it could be lost the real zeroes and states the least degree the polynomial can have.
Answers
Answer:
the graph is of a cubic function.
Step-by-step explanation:
f(x)= x^3. It should have at least one zero
The graph shows cubic polynomial.
What are Polynomial?A polynomial is an equation that solely uses the operations of addition, subtraction, multiplication, and non-negative integer exponentiation of variables. Variables are also known as indeterminates.
Given:
In the graph the number of times the graph touches the x- axis it will have that many zeroes or solution for the polynomial.
The given graph touches the x-axis three times which shows the polynomial will have three solution and the degree of the polynomial is 3.
Hence, the graph shows cubic polynomial.
Learn more about cubic polynomial here:
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let f(x)= p+ 8/x-q. the line x=4 is a vertical asymptote to the graph of f. what is the value of q and p, if the y intercept is (0,4)?
Answers
Answer:
The value of q and p is 4 and -24 respectively.
Step-by-step explanation:
Being [tex]f(x)=\frac{p+8}{x-q}[/tex] , the line x=4 is a vertical asymptote to the graph of f(x). The line r is an asymptote of a function if the graph of the function is infinitely close to the line r. That is, an asymptote is a line to which a function approaches indefinitely, without ever touching it.
Being a rational function that which can be expressed as the quotient of two polynomials, a vertical asymptote occurs when the denominator is 0, that is, where the function is not defined. In this case:
x - q= 0
Solving:
x= q
Being the line x=4 the vertical asymptote, then
4=q
Then the function f (x) is:
[tex]f(x)=y=\frac{p+8}{x-4}[/tex]
The y intercept is (0,4). This is, x= 0 and y=4. Replacing:
[tex]4=\frac{p+8}{0-4}[/tex]
Solving:
[tex]4=\frac{p+8}{-4}[/tex]
4*(-4)= p+8
-16= p+8
-16 - 8= p
-24= p
The value of q and p is 4 and -24 respectively.
The
The table shows the average daily number of hours sleep of 10 children.
Age (years)
6 1 3 8 4 5 2 7 9 7
Number of hours sleep 12.5 15 13.2 11 14 12 14 11.69.8 11
The first eight results have been plotted.
a) Plot the next two points.
x
Number of hours sleep
b) What type of correlation is shown
by the graph? Negative
10
c) Draw a line of best fit.
2
4
6
8
10
Age (years)
Please help.
Answers
Answer:
C: about 10 Hours
Step-by-step explanation:
i was on the assignment and i got C correct
The missing points are (7, 11), and (9, 9.8) and the type of correlation is negative.
What is the line of best fit?A mathematical notion called the line of the best fit connects points spread throughout a graph. It's a type of linear regression that uses scatter data to figure out the best way to define the dots' relationship.
[tex]\rm m = \dfrac{n\sum xy-\sum x \sum y}{n\sum x^2 - (\sum x)^2}\\\\\\\rm c = \dfrac{\sum y -m \sum x}{n}[/tex]
Let the line of best fit is:
y = mx + c
The missing points are:
(7, 11), and (9, 9.8)
The correlation will be negative.
The line of best fit is shown in the picture.
Thus, the missing points are (7, 11), and (9, 9.8) and the type of correlation is negative.
Learn more about the line of best fit here:
brainly.com/question/14279419
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Will give brainiest
Surds
Step by step explanation please on this question
Make sure to use Surds
Answers
Answer:
3
Step-by-step explanation:
You need to multiple 3 by 3 because 3 has an exponent. That makes the 3 into a 9. the square root of 9 is 3 so the answer is 3
FIRST CORRECT ANSWER GETS BRAINLEST
Gregg has quarters and p pennies. His brother has 4 times as many quarters and 8 times as many pennies as Gregg has. Write the sum of the number of coins they have, and then combine like terms.
Answers
Answer:
4x8=32
Step-by-step explanation:
Find the 54th term of the arithmetic sequence -7, -23, -39, ...
Answers
Answer:
-871
Step-by-step explanation:
Equation: -16x - 7
54th term: -16(54) - 7 = -864 - 7 = -871
an object travels at 20 m/s for 20 seconds. how far has it traveled?
Answers
Answer:
400 meters
Step-by-step explanation:
So it goes 20 meters every second. So you would multiply that by 20 seconds to get 400 meters.
MARK YOU BRAINLIST PLEASE ANSWER A small airplane flies from Big Lake to Pine City every day, with a 30-minute layover in Summerville. The distance between Big Lake and Summerville is 375 miles, and the distance between Summerville and Pine City is 525 miles. If the airplane flies at an average speed of 200 mph, how long does the whole trip (including any stops) from Big Lake to Pine City take?
Answers
Answer:
5 hours
Step-by-step explanation:
Simplify.
(8) = 81
DONE
Answers
Answer:
What are we supposed to simplify? 8/81?
Step-by-step explanation:
All the following are equivalent to 2(2a + b ) +8, except ______.
4a + 2b + 8
2(2a+b+4)
4(a+b+2)
4a+2(b+4)
Answers
Answer:
Except 4(a+b+2)
Step-by-step explanation:
It's 4a+4b+8 when expand
how many different 2-person conversations would happen at a party of 30 people
Answers
Just part A please as soonnn as possible I need help!!! Thanks!
Answers
Answer: -1 ≤ x ≤ 4.
Step-by-step explanation: To solve this problem, we first add 7 to the inequality: -4 ≤ 4x ≤ 16. Then we divide the entire equation by 4 to get -1 ≤ x ≤ 4.
Cameron has a bag of 50 gumdrops. There are 15 peach, 20 strawberry, 5 cherry, and 10 watermelon. Without looking, he picks a gumdrop, looks at it and puts it back, then chooses another without looking. What is the probability he will choose strawberry both times?
Answers
All you have to do is take the amount and do probability like a fraction