Answer:
3x-x+2=4
Step-by-step explanation:
A student mixes two substances in a large beaker. After two hours, the student sees that the substances have separated again.
These substances MOST LIKELY differ in their —
Answer:
densities
Step-by-step explanation:
HELP ASAP !!!!!
Write a direct variation equation that relates 16 and 2
Answer: 16 = 2x
Step-by-step explanation:
The pattern for a direct variation equation is y = kx.
y is the "output" or result.
k is the "constant" a number that will remain the same.
x is the "unknown" or variable that will make the output correct once found.
Here, x = 8
16 = 2(8)
After learning how to fly, Wendy reduced her daily commute time by 75%. Previously, her commute took m minutes.
Which of the following expressions could represent Wendy's commute time, in minutes, after she learned how to fly?
Choose 2 answers:
A 0.25m
B [tex]\frac{1}{4} m[/tex]
C 1.75m
D [tex]\frac{3}{4} m[/tex]
E 0.75m
Answer: Since she reduced her daily commute time by 75%, her time now is 25% of her original. Thus, you have 0.25m or 25m%.
Step-by-step explanation:
39 ft/min= ____ yd/s explain your reasoning
Answer:13 yards
Step-by-step explanation:
There are 3 feet in one yard 39 divided by 3 is 13. So 39 feet is 13 yards
can someone plss help me? Asap i still don't get the hang of Scale Factors
1. If the scale factor between the original and the image is 4, how many times larger is the perimeter of the image than the original?
2. If the scale factor between the original and the image is 0.5, how many times is the perimeter of the image than the original?
3.The perimeter of an original figure is 14. If the image has a scale factor of 6 from the original, what is the perimeter of the image?
4.The perimeter of an original figure is 64. If the image has a scale factor of 0.25 from the original, what is the perimeter of the image?
Problem 1
Answer: New perimeter is 4 times larger than the original
----------
Explanation:
This is because we are multiplying each side by 4 to make each side 4 times larger than the original.
Let's say we had a triangle with side lengths 1,2,3
The perimeter would be 1+2+3 = 6
Now multiply each side by 4
4*1 = 4
4*2 = 8
4*3 = 12
Then add up those new side lengths: 4+8+12 = 24
We see that 24 is exactly 4 times larger than 6
In more general terms, say the triangle has side lengths x y and z
The old perimeter is simply x+y+z
The new perimeter is 4x+4y+4z = 4(x+y+z) = 4*(original perimeter)
==========================================
Problem 2
Answer: New perimeter is 0.5 times larger than the old perimeter
In other words, the new perimeter is half as large
----------
Explanation:
The same idea applies as in problem 1. The only difference is that we're multiplying each side by 0.5 now
1/2 = 0.5
==========================================
Problem 3
Answer: 84
----------
Explanation:
We're using the same idea as the other problems above.
new perimeter = (scale factor)*(old perimeter)
new perimeter = (6)*(14)
new perimeter = 84
==========================================
Problem 4
Answer: 16
----------
Explanation:
Same idea as before
new perimeter = (scale factor)*(old perimeter)
new perimeter = (0.25)*(64)
new perimeter = 16
As you can see, if the scale factor is larger than 1, then the new perimeter will be larger. If the scale factor is smaller than 1, but still positive, then the new perimeter will be smaller.
Answer: The scale Factor is the number that you Multiply the Original Lengths by to get the new lengths.
1.) The new length is 4 times the original. 4× L
2.) The new length is 0.5 times the original. 0.5× L
3.) 84. 6×14 = 84
4.) 16. 64× 0.25 = 16
Step-by-step explanation:
For lines --- like sides, perimeter, and distance, Multiply the original number by the Scale Factor to get the new number. Or Divide the New number by the Scale Factor to get the Original.
(They ask that sometimes.)
__Also remember that length refers to lines__.
[ Area refers to Square Units. The Factor must also be squared. ]
Evaluate 5+(−3) =
plz I need help
Answer:
2
Step-by-step explanation:
it's just 5 - 3 lol, 5+-3=2
Answer:
2
Step-by-step explanation:
5+(-3)
--------------------------
When you are adding a negative you are subtracting.
--------------------------
In this equation, we can replace the "+(-)" with "-" like this:
--------------------------
5+(-3)=
5-3=
--------------------------
With that, the final answer is...
5-3=
2
--------------------------
in 2005 8.1 x 10^10 text messages were sent in the united states. in 2010, the number of annual text messages has risen to 1,810,000,000,000. about how many times as great was the number of text messages in 2010 than 2005?
Will mark brainliest!
Choose the equation that represents a line that passes through points (−3, 2) and (2, 1).
5x + y = −13
5x − y = 17
x − 5y = −13
x + 5y = 7
Answer:
Your answer: D) x+5y=7
Step-by-step explanation:
Hope this helped : )
Answer:
It’s the second one in the fourth one
Step-by-step explanation:
Q. You have 7 people in your work group. If you each worked 38 hours during last week, how many total hours were worked by the group? _____ hours
The table below shows the price for different sized cans of corn. Which can has the cheapest price per ounce?
28 oz.
14 oz.
10 oz.
44 oz.
Answer:
44 oz.
Step-by-step explanation:
about 0.07 each ounce
Answer:
just divide them
Step-by-step explanation:
get a calculator and divide the oz. by the price
The figure below shows a shaded rectangular region inside a large rectangle:
A rectangle of length 10 units and width 5 units is shown. Inside this rectangle is another rectangle of length 7 units and width 3 units placed symmetrically inside the larger rectangle. The smaller rectangle is shaded gray.
What is the probability that a point chosen inside the large rectangle is not in the shaded region?
Group of answer choices
72%
84%
42%
58%
Answer: 42%
The figure below shows a shaded rectangular region inside a large rectangle:
A rectangle of length 10 units and width 5 units is shown. Inside this rectangle is another rectangle of length 7 units and width 3 units placed symmetrically inside the larger rectangle. The smaller rectangle is shaded gray.
What is the probability that a point chosen inside the large rectangle is not in the shaded region?
Answer = 42%
Find the coordinates of the image of J(8,7) after a reflection over the x-axis.
Answer:(8,-7)
Step-by-step explanati
Factors of 15: 1, 3, 5, 15
Factors of 20: 1, 2, 4, 5, 10, 20
What is the greatest common factor (GCF) of 15 and 20?
A. 5
B. 15
C. 1
D. 20
Answer:
A
Step-by-step explanation:
Answer:
A. 5
Step-by-step explanation:
It is A. 5 because if you look at the factors of 15 and 20, there are two common factos in both of them. 1 and 5, but the questions is asking for the greatest common factor of 15 and 20. 5 is greater than 1, so 5 is the greatest common factor, making A the answer.
Hector paid $57.00 for 5 movie tickets. Each ticket cost the same amount. What was the cost of each movie ticket in dollars and cents?
Answer:
11.4
Step-by-step explanation:
57/5
Answer:
11.4 dollars
Step-by-step explanation:
hope that helps
11 dollars and 4 cents
in 2005 8.1 x 10^10 text messages were sent in the united states. in 2010, the number of annual text messages has risen to 1,810,000,000,000. about how many times as great was the number of text messages in 2010 than 2005?
22.345679 times greater.
10^10 = 10 zeros. 10,000,000,000.
10 billion * 8.1 = 81 billion.
1.18 trillion / 81 billion = 22.345679
Which of the following will not help Robert lower his homeowners insurance premium? a. Increase the deductible on his policy. b. Remove replacement cost from his policy. c. Reduce the number of riders on his policy. d. Increase the total coverage of his home on his policy.
Answer:d increase the total coverage on his home policy
Step-by-step explanation:
Jane drives at a constant rate of 45 miles per hour for 4 hours. How far will she have traveled in that time?
A. 110 mi.
B. 160 mi.
C. 180 mi.
D. 220 mi.
Answer:
180 miles per hour. 45*4 to get the answer.
Step-by-step explanation:
I hope this helps you :)
TEN POINTS A QUESTION!!!
Answer:
What is the qestion
Step-by-step explanation:
Last math question :’)
Answer:
324
Step-by-step explanation:
um sorry thats all i understand from this problem :(
The variable y varies directly with the variable x.
A 2-column table with 3 rows. Column 1 is labeled x with entries 2, 10, 14. Column 2 is labeled y with entries 3, 15, blank.
If the value of x is 14, what is the value of y?
Answer:
21
Step-by-step explanation: :)
Which choice best represents the standard form representation of the following expression?
1/3(12 + 6x)
Question 5 options:
2 + -4x
2 + 4x
4 + -2x
4 + 2x
Answer:
6x
Step-by-step explanation:
2 lb/wk _____ oz/day
explain
2lb/wk = 32oz/wk = 4.5oz/day
Bc 2 lb is 32 oz and 32 oz ÷ 7 days is 4.5 oz
Tucker was asked to solve the equation 5x + 3 = 6x + 1. He did not know if his first step should be to add 5 negative x-tiles, or 1 negative unit tile, to both sides. What advice would you give Tucker to help him decide on his first step? Explain.
Answer: First Subtract 5x from both sides. Then subtract 1 from both sides.
Step-by-step explanation: To solve an equation, get all the variables (x, in this example) on one side and all the constants (numbers alone) on the other side of the equation.
The thing to remember about solving an equation is to keep it balanced. Do the same thing on both sides.
When possible, subtract smaller numbers from higher numbers.
5x + 3 = 6x + 1
5x -5x + 3= 6x - 5x + 1
5x-5x =0 on the left side so they "cancel" On the right, 6x-5x = x
3 = x + 1
3 -1 = x +1 -1
On the right 1-1 = 0 So the 1's "cancel" On the left 3-1 = 2
2 = x Rewrite as x = 2 to tell the solution
Which of the following is NOT a true statement about the angles shown below?
Answer:
He knows this because if the angles are added together the have to equal 180 degrees because a line equals 180 and lines make up a triangle
Step-by-step explanation:
But the answer is A because x cannot equal 30 because it askes the angles not x so AHD is 30 also you can tell by looking that its not that big.
Pythagorean theorem)
Answer: its b ;p
Step-by-step explanation:
Answer:
5.7
Step-by-step explanation:
6 times 6 is 36 2 times 4 is 2. 36 - 4=32 and 32 squared is 5.656
Drag the cards to create a number that matches these rules.
The number ends in the tenths place.
8 is the nearest one when rounding
card numbers(8,7)
Answer:
7.8
8 is the nearest when rounding and it said when you round it is near 8 so the numbers are 8 and 7 so its 7.8
Find the value of the expression: -2 3/5 x 4 Explain how you found your answer in 2 complete sentences and write your answer in a mixed number.
Answer:
i think its 0.4
Step-by-step explanation:
Please help ;-; ASAP QnQ
Describe why alternate interior angles are not always congruent?
Answer:
The Alternate Interior Angles Theorem states that, when two parallel lines are cut by a transversal , the resulting alternate interior angles are congruent .
Answer:
Alternate angles are always interior so in that case they will never meet up or join each other. hope this helps !
Step-by-step explanation:
solve the volume of a cone, V=1/3πr^2h, for h.
h = ?
Answer:
h = 0.011
Step-by-step explanation:
