How can you use mental math and the inverse property of addition to find the sum [5.5+(-2.3)] +(-5.5 + 2.3)?
Answer:
To use mental math and the inverse property of addition to find the sum [5.5+(-2.3)] +(-5.5 + 2.3), you can use the following steps:
Rewrite the expression as [5.5+(-2.3)] +(-5.5) + 2.3.
Use the inverse property of addition to rewrite (-5.5) as 5.5, so the expression becomes [5.5+(-2.3)] +(5.5) + 2.3.
Use the inverse property of addition again to rewrite (-2.3) as 2.3, so the expression becomes [5.5+2.3] +(5.5) + 2.3.
Use the associative property of addition to rearrange the terms in the expression, so it becomes 5.5 + 2.3 + 5.5 + 2.3.
Use mental math to add the terms, which gives you a result of 15.8.
Therefore, the sum of [5.5+(-2.3)] +(-5.5 + 2.3) is 15.8.
Step-by-step explanation:
A right triangle has one leg with a length of 5 units. The hypotenuse is 30 units long. What is the length of the other leg?
A. 5 Units
B. 25 Units
C. V 875
D. V 375
Answer: C. [tex]\sqrt{875[/tex]
Step-by-step explanation:
use Pythagorean theorem [tex]a^{2}+b^{2}=c^{2}[/tex]
a=5 c=30 solve for b
[tex]25+b^2=900[/tex]
subtract 25 from both sides to get [tex]b^2 =875[/tex]
then square both sides to get [tex]\sqrt{875[/tex] for the length of the other leg
Enter the correct sum in each box. Use the number line to help you.
(A) 4.6 + (–5.9)
_________
|_________|
(B) –4.4 + 6.2
_________
|_________|
(C) 2.1 + 0.5
_________
|_________|
(D) –3.8 + (–1.3)
_________
|_________|
Answer:
(A) 4.6 + (–5.9)
-1.3
(B) –4.4 + 6.2
1.8
(C) 2.1 + 0.5
2.6
(D) –3.8 + (–1.3)
-5.1
To make iced coffee, Sara puts her hot coffee into a refrigerator when it’s temperature is at 130 ℉ . The temperature of the coffee drops 4 ½ ℉ each hour. What is the temperature of the coffee after 5 hours?
PLEASE HELP I’M CONFUSED
Select all ratios equivalent to 16:12 A. 12:9 B. 4:24 C. 48:36
Answer:
A, B, and D
Step-by-step explanation:
there all equal to 1¯3
Answer:
A - 12:9 and C - 48:36 are your answers
Step-by-step explanation:
16:12 can be simplified to 4:3 (by diving both numbers by 4)
You can see that 12:9 and 48:36 also equal to 4:3 when fully simplified.
HELP ME PLEASE W/QUESTION
Answer:No matter what, the wind doesn't go to the volcanic areas.
Step-by-step explanation: notice that no matter what time, the wind never goes near the volcanoes. thats because the heat is pushing it away.
Can anyone help with this problem please?
Answer: D) √116 units
Step-by-step explanation:
√(4^2 + 10^2) = 10.770
√116 = 10.770
Garth sells baseball caps outside the stadium. The graph shows the number of caps sold and the income from the sales. It represents a linear function.
Which statement best describes Garth's income from selling these caps?
A. He gets $5.00 per cap.
B. He gets $25.00 per cap.
C. He gets $34.00 per cap.
D. He gets $12.00 per cap.
Select all ratios equivalent to 30:14 A. 6:4 B. 21:7 C. 60:28
Answer:
c
Step-by-step explanation:
30:14 The division isn’t proportional. 30/5 is 6 but 14/5 is not 4.
6.4
—————
30:14 Same here as above just now the 14 is proportional just not the 21.
21:7
—————
30:14 Finally! The 2nd ratio is twice the first!
60:28
Answer: hope this helps ♡
C. 60:28
Step-by-step explanation:
30:14
A. 6:4 → 30 ÷ 6 = 5 & 14 ÷ 4 = 3.5 (the answers aren't equal) 30:14 ≠ 6:4
B. 21:7 → 30 ÷ 21 = 1.4 & 14 ÷ 7 = 2 (the answers aren't equal) 30:14 ≠ 6:4
C. 60:28 → 30÷60 =0.5 & 14÷28 = 0.5 (the answers are equal) 30:14 = 60:28
The table shows the statistics for the starting players after the first 15 games. PART A Use the table. Find the percent of free throws made by each player. Round to the nearest whole percent. [ table ]
Player
free throw attempted
Wilson 36
bartholdi 42
Johnson 22
garcia 29
o' malley 14
free throw made
WILSON 24
BARTHOLDI 37
jOHNSON 15
GARCIA 16
O' MALLEY 12
percent
Wilson 67%
artholdi 88%
jonhson 68%
garcia 55%
o' malley 86%
Answer:
Step-by-step explanation:
Wilson-70%, artholdi-90%, jonhson-70%, Garcia-60%, o'malley-90%
round each of them to the nearest whole percentage (nearest whole number).
Elle has just opened a boutique clothing shop. Because of the startup costs, for the next month her net earnings for an outfit is −$6.75. On Saturday during that month, she sold 7 outfits. What are Elle’s net earnings for Saturday?
PLEASE HELP ME
Answer:
$47.25
Step-by-step explanation:
Add $6.75 7 times
Joe must choose a number between 49 and 95 that is a multiple of 3 , 9, and 12 . Write all the numbers that he could choose. If there is more than one number, separate them with commas.
The first number 49 or larger that is divisible by 3 is 51 (17 * 3 = 51) so begin at 51 and count by 3's until you get to 95:51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93The first number 49 or larger that is divisible by 6 is 54 (6 * 9 - 54) so begin at 54 and count by 6's until you get to 95:54, 60, 66, 72, 78, 84, 90The first number 49 or larger that is divisible by 9 is 54 (9 * 6 - 54) so begin at 54 and count by 9's until you get to 95:54, 63, 72, 81, 90Now look for the numbers that are in all three lists
MATH MATH MATH MATH MATH MATH
Answer: Y = 3/8
Step-by-step explanation:
You can either use the rise/run method or subtract 2 points from the line to get the slope. You can do the rise/run method by starting at a point that is on the corner of the square and keep counting how many spaces you have to go until you get to the next even point. This number will be on the bottom, then count up until you get to that even point,this amount of spaces this takes will be on top. Since there are only 2 visible points on this graph,I will use the other method. You can use either the y1-y2/x1-x2 formula or do this
8,3
0,0
8,3
Remember,the y goes on top! Our slope is 3/8,also since the y intercept is the orgin/0,0 we don't need to add it at the end. I hope this helps and wasn't too complicated!
y = 3/8(x) is the equation that represents the proportional relationship in this graph, for y in terms of x.
What is proportional?In mathematics, two sequences of numbers, frequently experimental data, are proportional or directly proportional if their corresponding elements have a constant ratio, known as the coefficient of proportionality or proportionality constant.
If corresponding elements in two sequences have a constant product—also known as the coefficient of proportionality—then the two sequences are inversely proportional.
This definition is frequently broadened to include associated varying amounts, also known as variables.
We can see that when y = 1.5, then x = 4
And when y = 3, x = 8
Putting the value in slope form
y - y1 = m(x - x1)
3 - 1.5 = m(8 - 4)
1.5 = m(4)
m = 1.5/4
m = 3/8
Now simply we put the value in y-intercept form
y - 3 = 3/8(x - 8)
y = 3/8(x) - 3 + 3
y = 3/8(x)
Learn more about proportional
https://brainly.com/question/7096655
#SPJ1
Select all ratios equivalent to 20:4 A. 8:1 B. 10:2 C. 15:3
Answer:
b 10:2 ,, c 15:3
Step-by-step explanation:
20:4 by dividing 4 from both sides you get the ratio
5 :1
so simplify the other ratios and find one that equals this one
A is already in simplest form 8:1
so it's refused
B 10:2 by dividing 2 from both sides you get the ratio 5 :1
C 15:3 by dividing 3 from both sides you get the ratio 5 :1
so both B and C are correct answers
Hope this helped! :)
1.) Last week, the price of grapes at the farmer's market was $1.50 per pound.
This week, the price has decreased by 15%. What is the price of grapes this week?
Look at the graph of a function below.
Which set builder notation represents the domain of the function in the graph?
A. {y|−1≤ y ≤ 3}
B. {y|1 ≤ y ≤ 9 }
C. {x|−1 ≤ x ≤ 3}
D. {x|1 ≤ x ≤ 9}
Answer:
A. {y|−1≤ y ≤ 3}
Step-by-step explanation:
because
Hallie and Mattie donated blue jeans to the clothing drive. Hallie donated 4 pairs of blue jeans. Mattie donated 6 pairs of blue jeans. Write a ratio to represent the relationship between Hallie's donation of jeans and Mattie's donation of jeans.
Answer:
2:3
Step-by-step explanation:
Hallie's Donation : Mattie's Donation = 4:6
simplified, it is 2:3
The school that Ashley goes to is selling tickets to the annual dance competition. On the first day
of ticket sales, the school sold 5 adult tickets and 7 child tickets for a total of $152. The school
took in $86 on the second day by selling 5 adult tickets and 1 child ticket. Find the price of an
adult ticket and the price of a child ticket.
Answer:
children: $4.34
adult: $ 17.02
(this is very wrong)
PLEASE HELP! I WILL GIVE BRAINLY!! (if u troll ill report!)
A sports medicine major wanted to conduct an experiment to determine if there is a correlation between the members of the soccer team's leg strength and the time it takes for them to sprint 40 yards. He sets up the following test and records the data:
Answer:
Using linear interpolation on the interval [15,23] that would be
9.5 + (22-15)/(23-15) * (11.9-9.5) = 11.6
That is, since 22 is 7/8 of the way from 15 to 23, he should produce a value 7/8 of the way from 9.5 to 11.9
The correct answer is 11.9
I took the test, this is my third time answering this question.
I explained everything but all got erased, anyways the answer is 11.9
If you have 10 friends and make two equal teams, what fraction do you use?
Its not 10/2 guys
Answer:
Step-by-step explanation:
Can somebody please help me. All you have to do is write an equation for a problem and answer questions about it! (I will give brainliest to whoever can answer it!)
Can I please have help with this
4x+2+2x+10 = 90
6x + 12 = 90
x = 90-12/6
= x = 13
MARK ME AS BRAINLIEST
Answer:
x= 13
Step-by-step explanation:
4x+2+2x+10=90
collect like terms
4x+2x+10+2=90
6x+12=90
collect like terms again
move 12 to the other side then the sign will change to minus -
6x=90-12
6x=78
divide both sides by 6
6x/6=78/6
x=13
proportional or not proportional?
Answer:
Proportional
Step-by-step explanation:
The relationship is proportional because starting at (0,0) there's a constant rate between the number of plants and the number of roses. We can represent this proportional relationship as y=5x where k=5, the constant of proportionality.
Help me find the answer to this please!!
Snow fell in Newton twice in one day. The town received inch of snow in the morning and another inch of snow in the afternoon. How many total inches of snow fell in Newton on that day?
Answer : 1+1=2
Step-by-step explanation
1inch snow in am plus 1in snow in pm equals a total of 2in snow for that day.
Which graph represents the linear equation y equals one fourth x plus 1 on the coordinate plane?
Answer: It is the last graph you listed. y=1/4x+1 this means the slope is 1/4 and the y intercept is. The last graph matches this exact description.
Step-by-step explanation:
The elevation of a small submarine changes by -3/8 mile after each exploration. After how many explorations will the submarines elevation have changed by -1 1/2 miles?
PLEASE HELP
helpppppppppp fastttttttttttttttttttttttttt
Answer: 8 x 6
Step-by-step explanation 8 x 6
because both integers meet at 8 horizontally, ND 6 VERTICALLY. THEREFORE THE ANSWER IS 8 X 6
A 3ft baby elephant standing next to a man casts a 7ft shadow, if the man casts a 14 foot shadow, how tall is he?
Answer:
6ft
Step-by-step explanation:
First you figure out 7/3 which is 2.3333333...
then do 14/2.33333333...
please show on a graph so i can understand pleaseeeee
Answer:
Step-by-step explanation:
then you find the lcm of 7, multiple by 6^999 and divide by 4. Take your remainder and multiply by 3/4, then take your product and take it to the 6th power.