Find the mistake: two-step equations (very easy 7th grade problem)
5 stars for correct answers
have a splendid day and dont forget to love yourself :)
choices are step 1, step 2 , step 3 , or nigel didnt make a mistake
Answers
Answer:
Step 1
Step-by-step explanation:
Step 1 is incorrect because he forgot to use the distributive property.
Explanation:
1/2 (2h - 4) = 20 needs to be distributed.
1/2 * 2h = 1h and 1/2 * -4 = -2 and 20 * 1/2 = 10
It should be 1h - 2 = 10
But since he didn’t distribute, his first step was wrong causing the whole problem to be incorrect.
Related Questions
please help me, i’m confused on this.
Answers
Answer:
Answers A and B respectively
Step-by-step explanation:
In the first pic, they are asking you for the value of the function at the points x = -1 and x = 5. Then you are asked to subtract your results. When the value of 'x' is -1, the 'y' value is 3. When the value of 'x' is 5, the 'y' value is -4. Therefore:
[tex]f(-1)-f(5)=3-(-4)=7[/tex]
Answer A
For the second problem, they are saying that the line connecting points A and B is undefined. This means the slope is undefined along that line. An undefined slope is due to a zero in the denominator. Begin by taking the change in 'y' over the change in 'x' to get:
[tex]\frac{y_1-1}{x_1+2} =m[/tex]
In order for our slope 'm' to be undefined, set the denominator to zero and see at what 'x' value this occurs at:
[tex]x_1+2=0[/tex]
[tex]x_1=-2[/tex]
Then they say that the line connecting points C and D is zero. A zero slope would mean a zero in the numerator. Again, begin by taking the change in 'y' over the change in 'x' to get:
[tex]\frac{3-y_2}{-5-x_2} =m[/tex]
Set the numerator equal to zero to get:
[tex]3-y_2=0[/tex]
[tex]y_2=3[/tex]
Answer B
The speed of the jet Alyssa flew on from Boston to London was 480 mph. On her return flight, the speed of the jet was 600 mph with a tail wind. What was Alyssa's average speed on the round trip? Round your answer to one decimal place.
Answers
Answer:
533.3 MPH
Step-by-step explanation:
Because the round trip was divided into two segments with varying speeds, you can name the first one (480 MPH) x, and the second one, (600 MPH) y. Then you can use the formula 2xy/(x+y) and put the values in. You should get 576000/1080. After you solve it, you will get 533.333333333... But the problem has not been solved yet, because you have to round 533.33333... to the nearest tenth place, which is .3. Then you should get the answer 533.3 MPH.
Do you guys do RSM too?
Answer the question in the picture then tell me how many pounds of cheese there is
Answers
1. [tex]1/4 * 4 = 1[/tex]
2. [tex]\frac{3}{4} * 8 = 6[/tex]
3. [tex]1\frac{1}{4} * 4 = 5[/tex]
4. [tex]1\frac{1}{2} * 2 = 3[/tex]
Pounds of cheese in all: 15
[tex]Hope[/tex] [tex]this[/tex] [tex]helps![/tex]
A cookie box is 10 cm tall, 6 cm long, and 3 cm wide. What is the volume of the cookie box?
Answers
Answer:
[tex]180cm {}^{3} [/tex]
Step-by-step explanation:
volume of the cookie box= length ×breath×height
volume= 6×3×10 = 180cm^3
Answer:
the answer is 180
Step-by-step explanation:
becuase 10 x 6 = 60 60x3
HELP ASAP PLS Indira makes jewelry boxes. Each jewelry box is 18 centimeters by 6 centimeters by 4 centimeters. She packs some of the jewelry boxes into a large box with no extra space. The large box has a volume of 2592 cubic centimeters. Question How many jewelry boxes does Indira pack into the large box? Enter the answer in the box.
Answers
18 • 6 • 4 = 432
2592/432 = 6?
how has figure DEF been transformed to figure ABC
Answers
...........................
Answers
Answer:
I am saying 88
Step-by-step explanation:
It's the lowest number in the options.
brainliest if you show how to do the work
Answers
Answer:
26.376 because the circumference formula is 2*3.14*radius so the radius of the goal would be 9 because radius is half of diameter which is 18 so 2*3.14*9=56.52 and the basketball's radius would be 4.8 and then 2*3.14*4.8 is 30.144 so the answer is 26.376 hope it helps
Step-by-step explanation:
Please can I have the brainliest
Give them brainiest
Please HELP I WILL GIVE BRAINLYEST
Answers
Answer:
-2 divided by 1/4
4 divided by 1/2
Select and order the pieces that make up the 5 number summary
Answers
please answer this first to answer CORRECTLY, gets brainliest.
Answers
Answer:
The area of the circle is 75 in^2
Step-by-step explanation:
Since it shows the radius to be 5, we simply do 5^2 to get 25. It also say to use 3 for pi. So, we would do 25*3 to get 75.
Bit late but oh well
This figure consists of a rectangle and a quarter circle.
What is the perimeter of this figure?
Use 3.14 for π.
Enter your answer as a decimal in the box.
__cm
Answers
Answer:
66.56 cm
Step-by-step explanation:
to find the circumfrence of a full circle you use the equation 2[tex]\pi[/tex]r
as 8 cm is the radius you do 2*3.14*8 which = 50.24
then to find it of quarter of a circle
50.24/4 = 12.56
to find the half line parallel to 17 cm you do 17-8= 9
overall perimeter=
12.56+8+9+10+17+10 = 66.56
Help me!! I need your brains to answer this! Btw I'll give brainlist point!
Answers
Answer:
the answer to the question is 7 square inches hope you have a good day
6 square inches
Step-by-step explanation:
Area of trapezoid= ((a+b)/2)h
a:base, b:base, h:height
Area= ((1.5+2.5)/2)(3)
= (4/2)(3) = (2)(3)=6
Hope this helps :)
4. Look at point S in the coordinate grid below.
If a line contains both point S and the origin, which point would the line also contain?
Answers
I think the answer Is b i could be wrong it's been a while since I did middle school
A machine can make 5 miles of ribbon in an hour. Graph the length of the ribbon the machine will make in eight hours. Another machine can make 8 miles of ribbon in an hour. Graph the length of the ribbon the machine will make in 8 hours. What is the difference in length for a 8 hour period between the two machines? Write an Equation in slope intercept for each machine.
Answers
Answer:
first machine make 40 miles in 8 hours
Step-by-step explanation:
how to solve 93 divided by 10.3
Answers
Answer:
Here is 93 divided by 10/3 displayed mathematically in colors:
93
÷
10/3
The numbers in 93 divided by 10/3 are labeled below:
93 = whole number
10 = numerator
3 = denominator
Step-by-step explanation: The Improper fraction is: 279/10 is an improper fraction and should be written as 27 9/10.
like & vote, tysm!!!
Answer:9.029126214
Step-by-step explanation:
Use calculator or do long divisions
Pls help
Which of the following is NOT a way of calculating slope?
A
m = rise / run
B
m = change in y / change in x
C
m = y2 - y1 / x2 - x1
D
m = 0 - y / 0 - x
Answers
Answer:
D. m = 0 - y / 0 - x
Step-by-step explanation:
It is not a way of calculating the slope.
The other ways :
A. m = rise / run [correct]B. change in y / change in x [correct]C. y₂ - y₁ / x₂ - x₁ [correct]All of these methods represent the same way, but represented in different forms, to find the slope.
Hence, only D is not a way of calculating the slope.
help please 40 points !! Part B: Lily walked 3 units up and 1 unit right to get from the park to the market. On the map above, draw and label a point to show the location of the market.
Answers
Part B: Lily walked 3 units up and 1 unit right to get from the park to the market.
===============
position of park: (2, 5)
If moved 3 units up. There will be change in y-axis. ⇒ (5+3) = 8
If moved 1 units right. There will be change in x-axis. ⇒ (2+1) = 3
So market position: (3, 8)
Answer:
if you go up 3 units that puts you at 2,8 then go over right 1 puts you at 3,8 which means x=3 and y=8
Step-by-step explanation:
In 1977, scientists on board the research submersible Alvin were able to see a deep sea vent up close.
What would they have discovered about this community?
There no organisms that had adapted to the living conditions.
There were cool temperatures.
There was lots of light.
There was lava oozing out of cracks in the sea floor.
Answers
Answer:
what Community??
Step-by-step explanation:
math problem im giving 78 points away if you answer this math problem sceenshot below
Answers
Answer:
The answer is 525
Step-by-step explanation:
35 out of 200 people is 7/40 of the people. to find 7/40 of 3,000 you need to divide 3000 by 40 and multiply that with 7. This should give you the answer 525
Solution 1
Total people whose first concert:
(probability of first concert from sample) * total people
(35/200) * 3000525 people's first concertSolution 2
a) A random sample because here the interview is with a large group of boys.
b) A fair question as people who don't like football as well can sometimes try out football. So asking them for thier favourite sports is fair.
Nine students were asked how many books they read last summer. Their answers are listed below.
Answers
Answer: Mode is 2 because it occurs most in the set.
Range is 7 because 9-2 = 7
Good Luck!
Answer:
mode is 2
range is 7
Step-by-step explanation:
HELPP [PWEASEEEEEEEEEEEEEEEEEE I NEEEDD ITTTTT
Answers
Answer:
the answer for the data chart should be 1,2 2,4 3,6 4,8 because it tells you that x is the time in minutes and y is the number of cookies that are cooked or baked out and that may be the answer for the x, y data chart part so thank you for helping you and give me brainliest if you want or not.
Step-by-step explanation: hopefully that is the answer and sorry if i get it wrong
Answer:
also can you screenshot the graph it would help
Step-by-step explanation:
Will give brainlist to the best answer if possible!! 10 points please help
Solve the system of equations by graphing.
Answers
Answer:
x = -2, y = -4 (-2,-4)
Step-by-step explanation:
1. Substitute "y = 2x+ in for y in "x + y = -6"
x + 2x = -6
2. Combine like terms:
3x = -6
3. Isolate x:
3x/3 = -6/3
x = -2
4. Substitute the new x-value in one of the equations:
y = 2(-2)
y = -4
The graph should look like the picture attached.
hope this helps :)
Match the account balance with the debt that it represents.
Answers
look at the picture at the bottom to solve also brainliest
Answers
Answer:
larger circle is 75.4
smaller circle is 50.27
Step-by-step explanation:
Answer:
Larger circle= 75.4
Smaller circle= 50.27
Step-by-step explanation:
Use this formula: C=2πr
Find the radius for bigger and smaller circle
The radis of the smaller is equal to: 12 - 4 =8
radius of smaller circle= 8
radius of bigger circle = 12
make an equation for one of the circles: (i chose the smaller one)
C=2π(8)
C= 16 π
C= 50.27
Now for the bigger circle
C=2π(12)
C=24π
C= 75.39
C= 75.4
Triangle
ABC with vertices A(4, 2), B(-3, 1), and C (-3, 1) is translated so that A’ is
now (1, 5). What was the translation,
and where are B’ and C’?
Answers
Answer:
A= (-7, -7)
B= (-3, 2)
C= (0, - 2)
Step-by-step explanation:
What is the y-intercept, axis of symmetry and vertex of the following function.[tex]F(x)=-3x^{2} -6x-5[/tex]
Will give brainilist
Answers
Axis of sym = -1
Vertex = (-1, -2)
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
AnswerAnswerAnswer: work yes work
Step-by-step explanation:
Answer: the perimeter of the wood is 67 sq. feet
Step-by-step explanation: i’m taking the same test
Which is equivalent to p/6 + (q+8)?
Answers
Answer:
Try 27.
Step-by-step explanation:
I may be incorrect, but worth a shot.
Name the angles that are adjacent to
Answers
Answer:
a,c
Step-by-step explanation:
adjacent angles share a common vertex and side