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:
2n+8n–7n+10n
help please
Mrs. Mendez held a reading contest in
her third-grade class. The students read
160 books. The girls read 84 books.
What percent of the books did the boys
read?
Answer:
47.5 percent is correct
Step-by-step explanation:
-2.9 is the __________________________ of 2.9 .
Answer:
I think its opposite
Answer: opposite
Step-by-step explanation:
Thirty out of 40 students passed the algebra test in their math class. what percentage of the students didnt pass the test?
Answer: 25%
Step-by-step explanation: 40-30= 10 10/40= .25
Answer: 90%
Step-by-step explanation:
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}
the answer to your question is c
pls help me I need the help
Answer: 1/4, 16/3, 3
Kado spent 1 2/3 hours painting a fence. Then he spent 4/5 of an hour walking his dog. How much longer did he spend painting than walking? Orleans chose C as the correct answer.How did she get that answer?
Answer: B, 13/15
Step-by-step explanation: If you multiply both to 15, you will get 1 10/15 and 12/15 if you then subtract the two of them you will be left with
13/15.
Orleans might have got the answer from subtracting wrong or adding them together.
Hope this helps! :)
Orleans must have chosen C as the correct answer, which is 13/15 hours. This means that Kado spent 13/15 hours longer painting the fence than walking his dog.
To find out how much longer Kado spent painting than walking his dog, we need to calculate the difference between the time he spent painting and the time he spent walking his dog.
Kado spent 1 2/3 hours painting the fence.
He spent 4/5 of an hour walking his dog.
To make the calculation easier, let's convert 1 2/3 hours into an improper fraction:
1 2/3 = (3*1 + 2)/3 = 5/3 hours
Now, the time difference is:
Time spent painting - Time spent walking
= (5/3) - (4/5)
To subtract fractions, we need to find a common denominator, which in this case is 15 (the least common multiple of 3 and 5):
= (5/3)(5/5) - (4/5)(3/3)
= 25/15 - 12/15
Now, we can subtract the fractions:
= (25 - 12)/15
= 13/15 hours
Orleans must have chosen C as the correct answer, which is 13/15 hours. This means that Kado spent 13/15 hours longer painting the fence than walking his dog.
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Please help ASAP .....
Answer:
(n-2)2 is in the formula (a-b)2 = a2- 2ab + b2
correct it by writing (n-2)2 = (n2 - 2(n)(2) + 2 raise 2)
Answer:
-2 * -2 = 4, but Maryam put -4 instead.
what are three ratios that are equivalent to 7:9
helpppp fasttttttttt pleaseeeeeeeee
Answer:
4(x-1)+9=17
Step-by-step explanation:
3(-2x+1) + 5 = 3x-4-5x
expand
-6x + 3 + 5 = 3x-4-5x
-6x + 8 = -2x - 4
add 2x to both sides to put all x values + coefficients on one side
-4x + 8 = -4
subtract 8 from both sides to isolate x and its coefficient
-4x = -12
divide both sides by -4 to isolate x
x = 3
plug x=3 into each option to see if it works
1. 5(3+3)-4 = 30-4 = 26 != 10
2. 2(3+1) = 8 != 4
3. 4(3-1)+9 = 17 = 17
4. 4(3)+7 = 19 != 3+8 = 11
Please help me ASAP thanks
In baseball, each time a player attempts to hit the ball, it is recorded. The ratio of hits compared to total attempts is their batting average. Each player on the team wants to have the highest batting average to help their team the most. For the season so far, Jana has hit the ball 12 times out of 15 attempts. Tasha has hit the ball 9 times out of 10 attempts. Which player has a ratio that means they have a better batting average?
A:Tasha, because she has the lowest ratio since 0.9 > 0.8
B:Tasha, because she has the highest ratio since 27 over 30 is greater than 24 over 30
C:Jana, because she has the lowest ratio since 0.9 > 0.8
D:Jana, because she has the highest ratio since 27 over 30 is greater than 24 over 30
Answer: A) Tasha, because she has the lowest ratio since 0.9 > 0.8
Step-by-step explanation:
is this right hurryyyyyyyyyy please
Answer:
its wrong
Step-by-step explanation:
cause first of all i have no i dea second of all it looks to hard for me
Find the value of x. (6x + 4)(5x + 2)(12x-4)°
Write two absolute-value expressions for the distance between "-7" and 5 on a number line. The give the distance between the numbers.
Answer:
look below!
Step-by-step explanation:
since the absolute value is just the number in positive form, the absolute value for the numbers are
-7: 7 1:1 So, the distance between the numbers is 12; 7+5=12.
-6: 6 2:2
-5: 5 3:3
-4: 4 4:4
-3: 3 5:5
-2: 2
-1: 1
Drag the correct steps into order to solve the equation −4+12=−4 for x
Answer:
Step 1: 4x = -16
Step 2: x = -4
Step-by-step explanation:
Subtracting 12 on both sides, and dividing by 4 will isolate "x" to solve the two-step equations, as we are performing opposite operations to the variable "x".
Help..? As soon as possible please tysm :>
Answer:
A. The constant ratio of y/x is 12/5
Step-by-step explanation:
The ratio of y to x is constant which is 12/5. Hence option A is the correct option.
What is a constant?
The term "constant" has several meanings in mathematics. When used as a noun, it can have any of the following two meanings: a constant, clearly defined number or another immutable mathematical object.
Given table is
x y
5/6 2
25/6 10
125/6 50
625/6 250
When x = 5/6 and y = 2:
x/y = (5/6)/2 = 5/12
∴y/x = 5/12
When x = 25/6 and y = 10:
x/y = (25/6)/10 = 25/60 = 5/12
∴y/x = 5/12
When x = 125/6 and y = 50:
x/y = (125/6)/50 = 125/300 = 5/12
∴y/x = 5/12
When x = 625/6 and y = 250:
x/y = (625/6)/250 = 625/1800 = 5/12
∴y/x = 5/12
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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
helpppp pleaseee fastttttttttt
Answer: 2 and
Step-by-step explanation: equation 2:
3(3x+4)-5=9x-2
9x+12-5=9x-2
9x+7=9x+-2
Subtract both sides by 9x
7=-2
This Is not true therefore there is no solution
equation 3:
3(3x+4)-5=-3x+4
9x+12-5=-3x+4
9x+7=-3x+4
12x=-3
divide both parts by -3
x=-4
Can anyone solve this?
1/2 × (23+15 ×11)
1/2 × (38 ×11)
1/2 × (23+15 ×11)
1/2×418
209ft²
Answer:
Option C)
Step-by-step explanation:
[tex]A=\frac{(23-15)(11)}{2} +(15)(11)[/tex]
[tex]A=44+165[/tex]
[tex]A=209ft^{2}[/tex]
Hope this helps
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.
Which point is a solution to the system of linear equations?
y = −x + 4
x − 3y = 12?
A: (0, 3)
B: (1, 2)
C: (6, −2)
D: (4, −4)
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:
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).
what is 3/4 times (4,4) also what is 3/4 times (8,4)
Answer:
1. (3,3)
2. (6,3)
Step-by-step explanation:
1. [tex]\frac{3}{4}[/tex] × (4,4)
step 1. divide by the denominator
4 ÷ 4 = 1
step 2. multiply by the numerator
1 × 3 = 3
2. [tex]\frac{3}{4}[/tex] × (8,4)
step 1. divide by the denominator
8 ÷ 4 = 2
step 2. multiply by the numerator
2 × 3 = 6
Hope this helps! ( * ＾▽＾)／
ALEKS
(screenshot)
Thanks! : )
Answer:
[tex]\frac{9}{1}[/tex]
Step-by-step explanation:
54÷6=9
--> 9:1
Rita made 4 bowls of fruit salad. She used 0.4 kilograms of melon in all. How many kilograms of melon, on average, were in each bowl?
Answer:
0.1 kilograms of melon in each bowl.
Step-by-step explanation:
[tex]\frac{0.4}{4}[/tex] = 0.1
Answer:
0.1 kilogram of melon are on each bowl
Step-by-step explanation:
[tex]\frac{4}{0.4} = 0.1[/tex]
Brand A has a pack of 28 pencils for $4.19. Round to the nearest tenth
Answer:
4.20
Step-by-step explanation:
"1" is in the tenths place, so we look at nine to see if its bigger or smaller than 5, it is so we round up to .20 giving us 4.20
(I also feel this isnt the whole question, but this is the answer for this part anyway.)
PLLLSSS HELP DUE TOMMOROW
9. If the area of a rectangle can be expressed as 36x + 24 square inches, write two
possible options for the expressions of its length and width.
If ito longth can be
Answer:By the formula for the area of a rectangle. Because length = 2 times width. Simplify. So w = -4 or w = +4. Obviously, having a negative width is nonsensical
Step-by-step explanation:
What is the maximum number of 2cm cubes that can fit into a box measuring 10cm by 8cm by 5cm?
Answer: The volume of box is 6×8×10 cm^3
All of 6,8 and 10 are divisible by 2 so your cubes will fill the box, the volume of the cube is 2×2×2=8 cm^3 divide the volume of the box by 8; number of cubes fitting in the box is 6×10=60
Step-by-step explanation:All of 6,8 and 10 are divisible by 2 so your cubes will fill the box, the volume of the cube is 2×2×2=8 cm^3 divide the volume of the box by 8; number of cubes fitting in the box is 6×10=60
Answer:
50 cubes
Step-by-step explanation:
The maximum number of 2cm cubes that can fit into a box measuring 10cm by 8cm by 5cm is 50 cubes.
You can find this by dividing the total volume of the box (10 x 8 x 5 = 400 cm^3) by the volume of a single cube (2 x 2 x 2 = 8 cm^3). So 400cm^3 / 8cm^3 = 50 cubes.
Hence, The maximum number of 2cm cubes that can fit into a box measuring 10cm by 8cm by 5cm is 50 cubes.