Answer:
Step 3: He should have divided both sides by -7.
Step-by-step explanation:
He divided by 7 not -7.
Hope this helps. Pls give brainliest.
A man is standing next to a 24 foot tree. the man is 7 feet tall with a shadow of 3 feet. how long is the shadow of the tree
Answer:
First we divide 24 by 7.
24÷7=3.42
now we multiply 3.42 by 3 since that was the length of the mans shadow
3.42x3=10.26
The trees shadow is 10.26 feet long.
By the way, that is a very tall man
Step-by-step explanation:
Help me pleaseeee!!!
Solve the equation -3x^2+2x+4= -x-3 by writing a linear-quadratic system and solving using the intersection feature of a graphing calculator. Round to the nearest hundredth
A. x= -2.44 and x=3.12
B. x=-1.63 and x=4.44
C. x=-1.11 and x=2.11
D. x=-2.61 and x=0.42
Answer: i did c when i had the same question but it was just a guess
Step-by-step explanation:
The solution of an equation is x= -1.11 and x = 2.11.
What is a Quadratic equation?A polynomial equation of the second degree is quadratic, which means that at least one of its terms must be squared. Quadratic equations are another name for it. The quadratic equation generally looks like this:
ax² + bx + c = 0, where x is a numerical coefficient and a, b, and c are unknown variables.
Given equation -3x² + 2x + 4 = -x - 3
simplify the equation we get
3x² - 2x - 4 -x -3 = 0
3x² - 3x - 7 = 0
The equation is solved by the Quadratic formula
x = (-b ± [tex]\sqrt{b^{2} - 4ac }[/tex])/2a
a = 3, b = -3, c = -7
x = [-(-3) ± [tex]\sqrt{(-3)^{2} - 4(3)(-7)}[/tex]]/2(3)
x = (3 ± 9.643)/6
taking positive sign
x = 12.643/6 = 2.1072 = 2.11
taking negative sign
x = -6.643/6 = -1.1072 = -1.11
Hence the values of x are -1.11 and 2.11
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2037 + 135.5x = 5560 what is x?
Answer:
x=26
Step-by-step explanation:
Simplify
8x - (4x – 3x)
Answer:
8x - 1x
Step-by-step explanation:
Just do the stuff in the ()'s first, for this it's is 4x - 3x, then rewrite the problem and it is simplified
PLEASE HELP!
Compare the two expressions using <, >, or =. For each, explain how you can determine the answer without calculating.
1. 100 x 8 ____ 25 x (4 x 7)
2. 36 elevens ____ 40 elevens - 3 elevens
3. 12 x 24 ____ 6 twenty fours, doubled
Answer:
1. >
2. <
3. =
Step-by-step explanation:
100x8=800, 4*7=28, multiplied by 25 is 700, therefore making 800 greater than 700. Whenever comparing two multiplication problems, multiplying large numbers produces large results, so whichever starts larger will have an end result that is larger. 100 was large and it is smaller to its counter 25.
36 elevens really means 11x36, which is 396. 40 elevens really means 40x11, which is 440 minus 11x3 which is 407. 407 is greater than 396. The same logic applies here as the previous answer, the only difference is that the removal of three elevens is still larger than 36 elevens in this case.
12x24=288, 6x24=144, doubled makes it 288. In this case, the six is half of the twelve to begin with and then is made up for later by the fact that it is doubled.
When I solve math questions like these, I ignore the fact that it doesn't want a mathematical answer, do the math anyway and pull logic from it. (If your teacher checks, do it on a separate piece of paper, and then toss it.)
These tables of ordered pairs represent some points on the graphs of lines m and n.
Which system of equations is represented by lines m and n?
A. 2x−9y=187x−2y=14
B.x−3y=65x−y=10
C.x−8y=165x+2y=20
D.3x−4y=242x+3y=−6
Line m
x y
−3 −3
0 −2
6 0
Line n
x y
−3 −25
1 −5
6 20
Answer:
B. x−3y=6 5x−y=10
Step-by-step explanation:
I just took a test with the same problem on it.. I got it wrong but this is what the test said was right.
The system of equations is represented by lines m and n are x - 3y = 6 and 5x − y = 10 option (B) is correct.
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
It is given that:
These tables of ordered pairs represent some points on the graphs of lines m and n.
Line m
x y
−3 −3
0 −2
6 0
The equation of the line:
y + 2 = (-2+3)/3[x]
y + 2 = x/3
3y + 6 = x
x - 3y = 6
Line n
x y
−3 −25
1 −5
6 20
The equation of the line n:
5x − y = 10
Thus, the system of equations is represented by lines m and n are x - 3y = 6 and 5x − y = 10 option (B) is correct.
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х = 3y — 1
3х – бу = 12
Answer:
1000000
Step-by-step explanation:
29292929292
sjsksksksn2292020wmz
Three times the sum of four and a number is twice the number.
Answer:
24
Step-by-step explanation:
Answer:
Step-by-step explanation:
Three times four = 12
And if the second number is 2 then
12 x 2 = 24 which is twice of 12
what's the answer to 7x-x
Answer:
6x
Step-by-step explanation:
7x - x
X by itself is the same thing as 1x.
So, if we rewrite the equation using 1x instead of just x:
7x - 1x
Now, we can subtract like we normally would.
7x - 1x = 6x
Find the slope of the line that passes through (2,2) and (9,10)
Answer: you just take the first set of points and subtract the second from it.
Step-by-step explanation: 2-9=-7 and 2-10=-8
the new set would be (-7,-8) hope this helps
Wyatt is a high school basketball player. In a particular game, he made some three point shots and some two point shots. Wyatt made a total of 12 shots altogether and scored a total of 32 points. Write a system of equations that could be used to determine the number of three point shots Wyatt made and the number of two point shots he made. Define the variables that you use to write the system.
Let x= the number of three point shots made}
Let y= the number of two point shots made}
3x+2y=32 first eqn
y=12-x second eqn
A system of equations for the number of three point and two point shots Wyatt made is:
[tex]3x+2y=32 [/tex]
[tex]x+y=12[/tex]
Let the three point shots be c.Let the two point shots be b.Given the following data:
Total shots = 12 shots.Total points = 32 points.What is a system of equations?A system of equations refers to an algebraic equation of the first order that has two (2) variables with each of its term having an exponent of one (1).
Translating the word problem into an algebraic expression, we have;
For the number of three point and two point shots Wyatt made:
[tex]3x+2y=32 [/tex] ...equation 1.
[tex]x+y=12[/tex] ...equation 2.
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HELP ME ASAP!! I WILL TRY TO MARK YOU
Answer:
d
Step-by-step explanation:
I divided it and looked at your answers
$d/20 hrs $180 for 12 hrs (answer is $300)
true or false help meh
Answer:
false
Step-by-step explanation:
i need help to solve please
Answer:
The picture cuts off the rest of he question please take another.
Step-by-step explanation:
A shop owner offered a 20% discount off the regular price of a mirror. The amount of the discount is $3.
What is the regular price of the mirror?
A
$15
B.
$6
C.
$9
D.
$18
Answer:
A. 15
Step-by-step explanation:
Multiply .2 by each value you have.
So 0.2 * 15=3
0.2 * 6=1.2
0.2 * 9=1.8
0.2 * 18=3.6
Find the area of the rhombus.
7.5 yd
13 yd
13 yd
7.5 yd
[ ? ] yd2
Answer:
195
Step-by-step explanation:
Jack works after school. Each day he is paid a set amount, plus an hourly wage.
Hours 1 1.5 2 2.5 3
Pay 18 23 28 33 38
Assume Jack works from 2:30 P.M. to 7:00 P.M. Using the function f(x) = 10x + 8, how much would he earn?
A. $33
B. $35.50
C. $45
D. $53
Answer:
B.35.50
Step-by-step explanation:
Please help :))) and explain how to do it if you can but if you can’t it’s fine
Step-by-step explanation:
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what makes two angles exterior versus interior ?
Answer:
Any angle that is on the inside of a shape is called an interior angle.
Step-by-step explanation:
Any angle that is on the outside of a shape is called an exterior angle. An exterior angle is made by extending one of the lines of the shape beyond the intersection point. ... Notice that the two angles make a straight line.
PLEASEEEEE HELPPPPP ASAPPPP
Answer:
y=4/-5x+2
Step-by-step explanation:
Slope is rise over run so if you start at one of the points given and go up 4 and to the left 5 you get the next point. Y-intercept is 2 where the line crosses the y line.
Write an equation of the line shown; (-2,-2), (2,2)
Answer:
Hi there! :)
Step-by-step explanation:
Lesson: Slope/ and slope-intercept form
Slope is 0
Final answer is 0
*The answer must have a positive sign.*
I hope this helps you!
Have a nice day! :)
what's the approximate value of x
Answer:
I think it's c. dndndbxbxhebd
True or False?
The equation ?
15 has two solutions,
Answer:false
Step-by-step explanation:
Drag the tiles to the boxes to form correct pairs. Not all tiles will be used.
Ratio Conversion Table
mile : yard 1 : 1,760
yard : foot 1 : 3
foot : inch 1 : 12
Using the conversion table, match the equivalent measurements.
2 miles
0.2 miles
372 feet
348 inches
124 yards
352 yards
1,016 yards
10,560 feet
29 feet
PLEASE HELP WILL GIVE TOP MARKS TO FIRST ANSWERER!
The correct choices are 29 feet = 348 inches, 352 yards = 0.2 miles, 372 feet = 124 yards, and 2 miles = 10560 feet.
What is unit conversion?It is defined as the conversion from one quantity unit to another quantity unit followed by the process of division, and multiplication by a conversion factor.
We have the ratio conversion table given.
mile: yard = 1: 1,760
yard: foot = 1 : 3
foot: inch = 1: 12
From the given conversion table:
29 feet = 29×12 inches
29 feet = 348 inches
Similarly,
352 yards = 0.2 miles (1 yard = 1,760 miles)
372 feet = 124 yards
2 miles = 10560 feet
Thus, the correct choices are 29 feet = 348 inches, 352 yards = 0.2 miles, 372 feet = 124 yards, and 2 miles = 10560 feet.
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Joshua went kayaking. It cost him $ 15 to rent the kayak. It also cost $ 6 for each hour spent on the lake kayaking. Joshua spent 2 $\frac{1}{2}$
1
2 hours on the lake. How much was his total bill for the kayak rental and hours kayaking on the lake?
Step-by-step explanation:
The total bill will be the sum of the rent and the cost for the total time spent.
$15 + $6 * 2.5
$15 + $15
$30
Use the table to answer the following question. What is an equation that describes this relationship?
The equation that describes the relationship is option A. y = 8 - 7x.
What is Slope?Slope of a line is the ratio of the change in y coordinates to the change in the x coordinates of two points given.
Given are the values of x and y.
x : 0 1 2 3
y : 8 1 -6 -13
Equation of a line can be written as y = mx + d in slope intercept form.
m is the slope and d is the intercept along Y axis.
Slope of a line with two points (x, y) and (x', y') is,
Slope = (y' - y) / (x' - x)
Consider the points (0, 8) and (1, 1).
Slope, m = (1 - 8) / (1 - 0) = -7 / 1 = -7
Since we already have the point (0, 8), y intercept, d = 8.
Substituting these, we get the equation of line as,
y = -7x + 8 or
y = 8 - 7x
Hence the equation of the line is y = 8 - 7x.
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Solve the proportion
Add. (2n+4)+(4a+2) (2n+4)+(4a+2)
Answer: 8an + 20a + 6n + 14
Step-by-step explanation:
Simplify the following expression, then evaluate when x=1:
-8x + 5 - 2x - 4 + 5x
Eric spends 45 minutes getting to work and 45 minutes returning
home. What percent of the day does Eric spend commuting?
plz help and if you know the awnser pleasee tell me how to get thereee
Answer:
6.25% of the day commuting
Step-by-step explanation:
45+45=1 hour 30 minutes
1.5/24
0.0625
6.25%
Answer:
6.25% of the day is spent commuting
Step-by-step explanation:
45+45=90 minutes
turn this into hour form because you want to make it easier to find out how much of a 24-hour day is spent commuting so 90 minutes = 1.5 hours
then you use 24 hours as the denominator since that is how many hours are in the day so 1.5/24=0.0625
to get this into a percentage, you multiply by 100 so 0.0625*100=6.25%
you can also solve this using solely minutes but converting to hours makes it easier in my opinion