Answer:
ur right
it's -1013
bc you need to do multiplication first so the equation turns out to be
10 - 1000 - 23
so then that turns to -1013 if you calculate left to right
What did ur friend get???
Stevie can refinish a driveway in 4 hours. Ray can refinish the same driveway in 3 hours. Princess can refinish the same driveway in 2 hours. If all three work together, how long would it take them to refinish 5 driveways? Show all work
Answer: 45 because 4+3+2=9 and 9x5=45
Gloria, Teresa, and Rebecca went to an office supply store. Gloria bought 8 pencils, 4 markers, and 6 erasers. Her total was
$22.00. Teresa spent $19.25 buying 5 pencils, 7 markers, and 8 erasers. Rebecca bought 5 pencils, 5 markers, and 4
erasers for $15.75. What is the cost of each item?
Answer:
pencil: $2
marker: $0.75
eraser: $0.5
Step-by-step explanation:
Let the prices of one pencil, one marker, and one eraser be p, m, and e, respectively.
Gloria:
8p + 4m + 6e = 22 Eq. 1
Teresa:
5p + 7m + 8e = 19.25 Eq. 2
Rebecca:
5p + 5m + 4e = 15.75 Eq. 3
Subtract Eq. 3 from Eq. 2:
2m + 4e = 3.5 Eq. 4
Multiply Eq. 2 by 8 and subtract from it Eq. 1 multiplied by 5.
40p + 56m + 64e = 154 Eq. 2 times 8
(-) 40p + 20m + 30e = 110 Eq. 1 times 5
----------------------------------------
36m + 34e = 44
18m + 17e = 22 Eq.5
Now use Equations 4 and 5 as a system of two equations in two variables.
Multiply Eq. 4 by 18. Subtract Eq. 5 from it.
36m + 72e = 63
(-) 36m + 34e = 44
-----------------------------
38e = 19
e = 19/38
e = 0.5
Now substitute e = 0.5 into Eq. 4 to fond m.
2m + 4e = 3.5
2m + 4(0.5) = 3.5
2m + 2 = 3.5
2m = 1.5
m = 0.75
Substitute e = 0.5 and m = 0.75 into Eq. 1 to find p.
8p + 4m + 6e = 22
8p + 4(0.75) + 6(0.5) = 22
8p + 3 + 3 = 22
8p = 16
p = 2
Answer:
pencil: $2
marker: $0.75
eraser: $0.5
The cost of each of the items are: cost of pencil = $2, cost of marker = $ 3 / 4 and cost of eraser = $ 1 / 2
let
the cost of pencil = x
the cost of marker = y
the cost of eraser = z
How to form the equation to calculate cost of each itemGloria bought 8 pencils, 4 markers, and 6 erasers. Therefore,
8x + 4y + 6z = 22
Teresa spent $19.25 buying 5 pencils, 7 markers, and 8 erasers. Therefore,
5x + 7y + 8z = 19.25
Rebecca bought 5 pencils, 5 markers, and 4 erasers for $15.75. Therefore,
5x + 5y + 4z = 15.75
Let'a combine the equation
8x + 4y + 6z = 22
5x + 7y + 8z = 19.25
5x + 5y + 4z = 15.75
Therefore,
x = 2, y = 3 / 4 and z = 1 / 2
Therefore, the cost of each item are as follows;
cost of pencil = $2
cost of marker = $ 3 / 4
cost of eraser = $ 1 / 2
learn more on equation here: https://brainly.com/question/14801823
Is this right? Please help me
Answer:
I think so but I an not fully sure
Perform the indicated operation.
1 1/6 + 7 3/6 =
I HAVE 5 MINUTES!!!
Answer:
1 1/6 - 7 3/6 = -19/
3
= -6 1/
3
≅ -6.3333333
Step-by-step explanation:
Conversion a mixed number 1 1/
6
to a improper fraction: 1 1/6 = 1 1/
6
= 1 · 6 + 1/
6
= 6 + 1/
6
= 7/
6
To find new numerator:
a) Multiply the whole number 1 by the denominator 6. Whole number 1 equally 1 * 6/
6
= 6/
6
b) Add the answer from previous step 6 to the numerator 1. New numerator is 6 + 1 = 7
c) Write a previous answer (new numerator 7) over the denominator 6.
One and one sixth is seven sixths
Conversion a mixed number 7 3/
6
to a improper fraction: 7 3/6 = 7 3/
6
= 7 · 6 + 3/
6
= 42 + 3/
6
= 45/
6
To find new numerator:
a) Multiply the whole number 7 by the denominator 6. Whole number 7 equally 7 * 6/
6
= 42/
6
b) Add the answer from previous step 42 to the numerator 3. New numerator is 42 + 3 = 45
c) Write a previous answer (new numerator 45) over the denominator 6.
Seven and three sixths is forty-five sixths
Subtract: 7/
6
- 45/
6
= 7 - 45/
6
= -38/
6
= 2 · -19/
2 · 3
= -19/
3
For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of both denominators - LCM(6, 6) = 6. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 6 × 6 = 36. In the next intermediate step, the fraction result cannot be further simplified by canceling.
In words - seven sixths minus forty-five sixths = minus nineteen thirds.
Train A and Train B, weigh a total of 550 tons. Train A is heavier than Train B.
The difference of their weights is 372 tons, What is the weight of each train?
Answer:
A:372 B:178 (I think this is what you were asking :/...
Step-by-step explanation:
A+B=550
A>B
550-372=178
A:372 B:178
Answer:
Train A weighs 372 tons, while train B weighs 178 tons.
some one help pleaseeeeeeeeeee
Answer:
hello i misss u hello love u
Be sure to show your work and solve for f:
8= f - ( 13 - 2 )
Answer:
f = 19
Step-by-step explanation:
8 = f - (13 - 2)
f - (13 - 2) = 8
f - 11 = 8
f - 11 + 11 = 8 + 11
f = 19
Answer:
i think the answer is f=19
the average of six consecutive even integers is 31. What is the sum of the smallest plus the largest of the integers?
Answer: 11
Step-by-step
x+x+1+x+3+x+5+x+7+x+9= 31
smallest is one
largest is 10
Hope it helps :)
Find the surface of each pyramid. round to the nearest tenth if necessary.
Nima can mow 18 yards in 6 days. Which strategy can be used to determine how many yards Nima can mow in 20 days?
Add the difference in the days to the number of yards.
Subtract the difference in the days from the number of yards.
Find the number of yards per day by division, and then multiply that quotient by the number of days.
Find the number of yards per day by division, and then divide that quotient by the number of days.
Answer:
the number of yards per day is 4
Step-by-step explanation:
because if you divide 6 with 18 you get 4 so theirs your answer
Answer:
C
Step-by-step explanation:
C
9. Triangle CDE is transformed to create triangle C'D'E'. The coordinates of the pre-image and the image are shown below. C(-6, 8) D(-4,8) E(-5, 9) C'(-8, -6) D'(-8, -4) E'(-9,-5) Which describes the transformation?
A. Translation 2 units left and 14 units down
B. Rotation 180° clockwise
C. Reflection over the x-axis
D. Rotation 270° clockwise
Answer:
d
Step-by-step explanation:
A furniture company is ordering screws. The company uses 37 screws to make each table and 14 screws to make each chair. The company needs to order screws for 12 tables and 48 chairs.
Which answer is the most reasonable estimate of the total number of screws they need to order?
Answer:
they need exactly 896 screws, 244 for tables and 652 for chairs, since it says reasonable estimate I would say 900, but again the exact amount it 896. I hope this helps.
Step-by-step explanation:
For every planet, no matter it’s period, or distance, period squared and distance cubed (equation p2d3 OR P*P/d*d*d) is the ________ NUMBER
A- differing
B-Same
C-smallest
D- Largest
the area is __ square units
I don’t understand what I’m suppose to do. Can someone please help?
From the 64 values in the table on the left, count how many fall within the given ranges under the "classes" column in the table on the right. The "frequency" is the number of values in the data that belong to a given "class".
For example, "< -16.0" means "values below -16.0". Only one number satisfies this: -16.2 (first row, third column). So the frequency for this class is just 1.
Then for the range "-15.9 - 13.0", which probably means "numbers between 15.9 and -13.0, inclusive", the frequency is 0 because every number in the table is larger than the ones in this range.
And so on.
James is saving up to buy himself a new drum set that costs $1300. He has already saved $500 and his parents have agreed to pay for half of the total cost. He wants to save the rest of the money he needs over six months. If he saves the same amount each month, how much does he have to save each month? Round your answer to the nearest penny
Answer:
25$ Each month
Step-by-step explanation:
Half of 1300$ is 650$ so add the 500$ and then subtract is from 1300$ you get 150$ needed, so across 6 months he needs to raise 25$
HELP ASAP!!! Giving brainliest to whoever answers first!!!
Answer:
basically do 23+35+27+48+18+35= 186 then divide it by how many there are (6) = 31 so the answer is 31
Answer:
31 is the mean points Jeremy scored
6a+5b=4.54
3a+7b=3.17
[tex]6a = 4.54 - 5b \\ a = \frac{227}{300} - \frac{5}{6} b \\ 6a = 4.54 - 5b \\ a = \frac{227}{300} - \frac{5}{6} \\ 3( \frac{227}{300} - \frac{5}{6} b) + 7b = 3.17 [/tex]
[tex] 3( \frac{227}{300} - \frac{5}{6} b) + 7b = 3.17 \\ \frac{227}{100} - \frac{5}{2}b + 7b = 3.17 \\ \frac{9}{2}b = 0.9 \\ b = 0.2 \\ a = 0.59[/tex]
Kathy wants to buy a sweater with a price tag of $25 the store is having a 40% off sale on all clothing which expression represents the sale price of the sweater
Answer:
.60 x $25 = X
Step-by-step explanation:
there aren't any multiple choice for the expressions but this expression would give you the answer
60% or .60 times the original price of the item will give you the new price of the item
$15 is the new price of the item
The ratio of kittens to puppies in Mrs. Brown's pet store is 2 to 6. There are 48 puppies in the class. What is the total number of animals in Mrs. Brown's pet store?
Answer:222
Step-by-step explanation:
i jsut got
Answer:
64
Step-by-step explanation:
let no. of kittens = x
kittens:puppies
2 : 6
x : 48 puppies
(48 × 2) ÷ 6 = x
x = 16
16 + 48 = 64
answer: 64
What is the median of the data set?
10, 18, 21, 25, 31, 33, 36
O A. 10
O B.7
C. 36
D. 25
Answer:
D
Step-by-step explanation:
Median = The middle number ( in terms of value )
So the first step is usually to put the set of numbers in order from least to greatest but they have already done that for us
That being said all we have to do is find the middle number
In the set, 10, 18, 21, 25, 31, 33, 36
the middle number would be 25
therefore your answer is D
Answer:
D. 25
Step-by-step explanation:
10, 18, 21, "25", 31, 33, 36
Hope this helps
help fasttttt please and no file please
Answer:
2 is the answer.
Hope it helps !!!
Answer:
x=2
Step-by-step explanation:
5x+2y = 16
8y = -x+26
5x+2y = 16
8y+x= 26
-19x = -38
x=2
Need help with Algebra 2???
HELP PLEASE :))))))))))))))
Answer:
r = 0.1Step-by-step explanation:
Given,
y = rx
Hence,
=> rx = y
[tex] = > r = \frac{y}{x} [/tex]
[By putting the value of x and y]
[tex] = > r = \frac{1.4}{14} [/tex]
=> r = 0.1
Hence,
The constant variation r is 0.1 (Ans)
What is the simplified form of i^3
O A. 1
O B.-i
O c. i
O D. -1
Answer:
B
Step-by-step explanation:
B because i² makes +1 and i=-1
so i³=-i
help pls!!!
find the area of the shaded region.
pls don’t send those links i don’t trust those.
Answer:
48 units
Step-by-step explanation:
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided
Solve the exponential equation
Solve exponential equation 1/16=64^4x-3
Answer:
x = 7/12
Step-by-step explanation:
Solve the exponential problem :
1/16=64^4x-3
1 / 4^2 = 4^3(4x - 3)
4^-2 = 4^3(4x - 3)
-2 = 3(4x - 3)
-2 = 12x - 9
-2 + 9 = 12x
7 = 12x
7/12 = 12x/12
7/12 = x
Hence, x = 7/12
Answer is 7/12, or approx. 0.58333... Answer explained in attached file.
Freckles and Rocky are Miss Nagel's puppies. They each eat their food at a different rate which is shown below. Who eats the fastest and how many more pieces per second?
Rocky
Time in seconds (t) 2 5 6 10
Pieces of dog food eaten (p) 8 20 24 40
Freckles
p = 7t
let p = pieces of food taken
let t = time in seconds
Answer:
A
Step-by-step explanation:
Which of the following statements about a rhombus is not true?
A rhombus is a parallelogram.
A rhombus has two sets of parallel sides.
A rhombus has four sides of equal length.
A rhombus has four right angles.
Given:
Consider a rhombus.
To find:
Which of the given statements about a rhombus is not true?
Solution:
Properties of a Rhombus:
1. It is a quadrilateral which is a special case of a parallelogram.
2. It has four equal sides.
3. It has two sets of parallel sides.
4. Opposite angles are equal.
5. Diagonals are perpendicular bisectors.
Since a rhombus doesn't has four right angles, therefore the last statement in the given options is not true about the rhombus.
Hence, the correct option is D.
HELP PLEASE BABES! I need it!!
Answer:
i think its no solution because it is parallel
Step-by-step explanation:
