I need help also I did not mean to click c so that might not be the answer so please don't put c as your answer unless you are certain that c is the answer.
Answers
Answer:
D. (43 +60) +40
Step-by-step explanation:
The purpose of changing the grouping in addition problems is to simplify the mental effort required as much as possible. This will generally mean grouping ...
"complementary" numbers, numbers with the same number of leading or trailing zeros, numbers with the same sign, and fractions with the same denominator.AnalysisA. Numbers ending in 0 are already grouped; no change is needed.
B. Fractions with the same denominator are already grouped; no change is needed.
C. Numbers with the same (negative) sign are already grouped; no change is needed.
D. Numbers ending in zero could be grouped to make addition easier:
43 +(60 +40) . . . . regrouping would be useful
We also note that in A and D, the sum of numbers ending in zero is 100, so these numbers are "complements" of each other. This is another reason for grouping them together.
Related Questions
Which of these systems of equations would be best solved using the subtraction method?
I. 2x−7y+3y = 4 −6x−4y = −52
II. 2y = −5x+6x−5 y = 2x−6
III. −7x+3x+2y = 4 4x−6y = −52
Answers
Answer:
Step-by-step explanation:
1. x+2y=6 or x=6-2y
3x-2y=2
3(6-2y)-2y=2
18-6y-2y=2
18-8y=2
-8y=-18+2
-8y=-16
y=-16/-8
y=2 ans.
x+2*2=6
x+4=6
x=6-4=2 ans.
Proof:
3*2-2*2=2
6-4=2
2=2
I leave the rest for you to practice with.
3. 4x+y=7
2x+5y=-1
5. 3x+2y=-2
6x-y=6
Solve the system using the elimination method. Show all your steps.
7. -3x+3y=3
3x+y=9 add.
---------------------------------
4y=12
y=12/4
y=3 ans.
3x+3=9
3x=9-3
3x=6
x=6/3
x=2 ans.
Proof:
-3*2+3*3=3
-6+9=3
3=3
I'll leave the rest for practice.
9. -5x+12y=20
x-2y=-6
11. 3x+2y=1
4x+ 6y= 7
He served the interests of the mid-western states.
Answers
Answer:
is this supposed to be a question?
Step-by-step explanation:
Yes. Absolutely. Correct. Outstanding.
whats the percentage?
Answers
Answer:
blue:2%
pink:40%
orange:25%
white:33
Step-by-step explanation:
White = 33%
Pink=40%
Orange=25%
Please see image below
Answers
The problem we are working is:
If John can paint half of a room in two-thirds of an hour, what part of the room can he paint in a full hour?
Use the table at the right. What part of the room will John paint in one hour?
Answers
Answer:
Answer: 0.75(3/4) part of the room
Step-by-step explanation:
Answer:
0.75(3/4) part of the room
Step-by-step explanation:
if he takes 2/3 hours to paint 0.5 room
then he will take 1 hour to paint x
cross multiply we have
x= 0.5/2/3
x=0.5*3/2
x= 1.5/2
x=0.75 part of the room
75/100= 15/20=3/4 part
McKenzie purchased tomatoes for $1.24 per pound. McKenzie spent a total of $8.06. How many pounds of tomatoes did McKenzie purchase?
Answers
she purchased 6.5 pounds
McKenzie bought 6 and half (6.5) tomatoes.
Pam and her sister have a pattern of saving money. Pam saved 40 dollars and her brother saved 100 dollars. Pam says that this means that for every 2 dollars she saves, her brothers saves 5. Is she correct? Show and explain your thinking
Answers
Pam is correct!
Explanation:
Pam saved 40 dollars
Pams brother saved 100 dollars
Every 2 dollars Pam saves her brother saves 5
If you divide 40 by 2 and divide 100 by 5, you will get 20. Because the equation equals the same amount, Pams statement is true!
Describe, step-by-step how to find the slope of a line through two points
Answers
Step One: Identify two points on the line.
Step Two: Select one to be (x1, y1) and the other to be (x2, y2).
Step Three: Use the slope equation to calculate slope.
The equation used to calculate the slope from two points is: m= y2 - y1 / x2 - x1
Example
Let's say that points (15, 8) and (10, 7) are on a straight line. What is the slope of this line?
Step One: Identify two points on the line.
In this example we are given two points, (15, 8) and (10, 7), on a straight line.
Step Two: Select one to be (x1, y1) and the other to be (x2, y2).
It doesn't matter which we choose, so let's take (15, 8) to be (x2, y2). Let's take the point (10, 7) to be the point (x1, y1).
Step Three: Use the equation to calculate slope.
Once we've completed step 2, we are ready to calculate the slope using the equation for a slope:
no links Translate the new algebraic expression you created in Question 1 to a verbal expression 7(2j + 3 + 2j).
Answers
Answer:
Seven times two times 'j', plus three, plus two times 'j'"
Step-by-step explanation:
7(2j + 3 + 2j)
7 ([2*j ]+ 3 + [2*j])
Good luck!!
Help me please brainliest reward
Answers
Answer:
The answer is b
Step-by-step explanation:
I had the same question
I don’t know the answer pls help I’ll give you brainliest!! 19 points.
Answers
Answer:
it is A i think i am a nub tho
Step-by-step explanation:
Answer:
D I think
Step-by-step explanation:
HALP PLEASE DO 6 AND 7 PLEASEEE
Answers
Answer:
Step-by-step explanation:
6) Convert mixed fraction to improper fraction and then plugin the values in the formula.
[tex]l= 3\frac{1}{3} yard=\frac{10}{3}\\\\w = 1\frac{5}{9} yard=\frac{14}{9}\\\\h =2\frac{1}{4} yard=\frac{9}{4}\\\\Volume of wood shed = l * w *h\\\\= \frac{10}{3}*\frac{14}{9}*\frac{9}{4}\\\\= \frac{5}{3}*\frac{7}{1}*\frac{1}{1}\\\\=\frac{5*7}{3}\\\\=\frac{35}{3}\\\\=11\frac{2}{3} cubic yard[/tex]
b) 10 cubic yard is less than 11 2/3 cubic yard. So, it will fit in the wood shed.
7) Right side rectangular prism:
l = 16 in
w = 5 in
h = 20 - 14 = 6 in
Volume 1 = 16 * 5 * 6 = 480 cubic inches
Left side rectangular prism:
l = 9 in
w = 5 in
h =14 in
Volume 2 = 9 * 5 * 14 = 630 cubic in
Volume of composite solid = 480 + 630 = 1110 cubic inches
A sphere and a cylinder have the same radius and height. The volume of the cylinder is 48 centimeters cubed.
Answers
Answer:
Step-by-step explanation:
32 cm
At a football stadium, 20% of the fans in attendance were teenagers. If there were 350 teenagers at the football stadium, what was the total number of people at the stadium?
Answers
Answer:
The answer is 1750
Step-by-step explanation:
Because 20% of 1750 is 350
Answer:
1750 is the total number of people at the stadium
A roast beef sandwich costs $6.75. A customer buys multiple roast beef sandwiches. Write an equation that represents the situation. Use x to represent the number of roast beef sandwiches. Then determine how many sandwiches the customer buys.
Amount used for payment: 80$
The change received: $19.25
An equation that represents this situation is _____
HELP GIVING A LOT OF POINTS FOR THIS I NEED AN EQUASION!!!
Answers
80 - 6.75x = 19.25
In the equation x + y = 8, find the value of x if y = 3
3
5
7
11
Answers
Answer:
11
Step-by-step explanation:
x+y=8 y=3
x+3=8
-3 -3
x=11
Answer:
substitute y in the equation
x+3=8
then we solve for x
transpose 3 to the right 8-3=5so therefore x=5
What is the solution to the inequality below? x + 3 > 7
Answers
Answer:
x>4
Step-by-step explanation:
x+3>7
bring the 3 to the other side by changing it into a minus making it
x>7-3
=x>4
because if you do the math that’s the correct anwser I have advance math
Help......................
Answers
10 x 10 x 10 x 10 x 10
2. 4.41
2.1 x 2.1
3. you can just put 6.25%
1/4 x 1/4
whatas half of $8.90 jhvbycgtfrd
Answers
:D PLZ HELP WITH MI MATH
Answers
18cm square
I think domt know
The volume of one of the sections of Tank A is 24 cubic feet. The volume of the other section of Tank A is 96 cubic feet. What is the total volume, in cubic feet, of Tank A? {dont solve this, This is to help with part B}
A. 4
b. 72
c. 120
d. 2304
Tank B has the same volume as Tank A. The volume of one section of Tank B is 45 cubic feet. What is the volume, in cubic feet, of the other section of Tank B? Enter your answer in the response box. {solve this}
Answers
Answer:
the answer is 141
may it help you
Evaluate the given expression when x = 3.
Enter the number only.
Answers
27 + 6*3 + 5
27+ 18 + 5
The answer is 50
Answer:
50
Step-by-step explanation:
If x=3 then x^3 would be 3 with the exponent of 3. It would look like 3x3x3=27
6x would be 6 times 3 which is 18.
Then you have just an extra 5.
Then add them all together. 27+18+5=50.
Therefore, your answer is 50.
Shirts are on sale for 30% off. The original price of one shirt is $15. What is the total cost, in dollars, of 2 of these shirts at the sale price, including a7% sales tax? Enter your answer in the space provided.
Answers
15 times 2 = 30
30% of off 30 dollars is 21 dollars
7% tax increase will come to 22.47
The total cost should be $22.47
~~~~~~~~sorry~~~~~~~~
Answers
pls help me with this math problem.
Answers
Answer:
the answer is c
Step-by-step explanation:
only do the highlighted ones please and thank you
Answers
Answer:
1. 193.2 in³
4. 628.32 ft³
Step-by-step explanation:
For the rectangular prism, just find the area of each individual side and add. For the cylinder, just do πr²×h, with r being the radius and h being the height.
Use grid paper to find the median of the data. Then find the median of the lower half and the median of the upper half of the data. 5, 8, 10, 1, 7, 6, 15, 8, 6
Answers
Answer:
points
Step-by-step explanation:srry
Answer:
3, 7, 8, 5, 12, 14, 21, 13, 18
Step-by-step explanation:
The tree diagram shows the sample space of two-digit numbers that can be created using the digits 9,2 1, and 8. What is the probability of choosing a number from the sample space that contains both 2 and 8?
Answers
Answer:
Given : the sample space of two-digit numbers that can be created using the digits 9,7,1, and 8.
To Find : probability of choosing a number from the sample space that contains both 7 and 8.
Solution:
TREE DIAGRAM
9 7 1 8
↓ ↓ ↓ ↓
------------------- ---------------- ----------------- ---------------
↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
9 7 1 8 9 7 1 8 9 7 1 8 9 7 1 8
Total Sample space = 16
Contains both 7 and 8
is ( 7 , 8) or ( 8 , 7)
Hence probability of choosing a number from the sample space that contains both 7 and 8. = 2/16
= 1/8
= 12.5 %
Step-by-step explanation: I spent lots of time typing out and working out the answer to your question so please mark Brainliest because no matter what you are always the Brainliest of them all! Have a wonderful day!
B. In the boys' long jump, Kevin jumped a distance of (6x1) + (9x 1/10) + (8x1/100)+(3x1/1000) meters. Leon jumped a distance of 6.093 meters. Kevin said he jumped farther than Leon. Is Kevin correct? Explain why or why not.
Answers
Next...
1/10 = 10% which equals 0.1
0.1 * 9 = 0.9
Now...
1/100 =1% which equals 0.01
So that means that 0.01 * 8 = 0.08
Lastly... 0.0010 * 3 = 0.003
You add
6 + 0.10 + 0.08 + 0.003 and you get 6.183.... (Kevin’s distance) which is obviously a farther distance than 6.093.
Kevin is correct :)
On a scale 5 cm is 12 yards. If the length is 30 yards, how many cm is this on the scale?
Answers
Answer:
12.5 cm I would believe
Step-by-step explanation:
30 divided by 12 is 2.5, 5 times 2.5 is 12.5