Review an
1. Without computing, state whether the
sign is positive or negative in each of the
following cases:
32 * (-12)
; 4.75 × (-2.4) < 3;
(-2.15) * (-14.6); (-2) (-3) × (-7);
10.5*(-2)*(-3.5); (-3.7)*(-2.6)*(-0.7)x4
Answer:
1. 32 * (-12) = negative
2. 4.75 * (-2.4) < 3 = negative
3. (-2.15) * (-14.6) = positive
4. (-2) (-3) × (-7) = negative
5. 10.5*(-2)*(-3.5) = positive
6. (-3.7)*(-2.6)*(-0.7)x4 = negative
An electronics company finds that 5 out of 75 capacitors produced are damaged. How
many damaged items can they expect if the company produces 1,500 capacitors?
=============================================
Explanation:
5/75 = 1/15 means that 1 out of every 15 capacitors are damaged.
Multiplying this with the 1500 capacitors produced, we expect about (1/15)*1500 = 1500/15 = 100 capacitors are damaged in this batch.
---------
A slightly different approach:
Saying "1 out of every 15 capacitors are damaged" means we can form the ratio
1 damaged: 15 total
Then multiply both sides by 100 so that the "15 total" jumps up to "1500 total" and we get the following
1 damaged: 15 total
100*(1 damaged): 100*(15 total)
100 damaged: 1500 total
We get the same answer as before.
Keep in mind that it's not a guarantee that we'll find 100 damaged capacitors out of 1500 total, but rather this is an estimate based on the average. So instead of saying "there are 100 damaged capacitors" it would be better to say "there are expected to be about 100 damaged capacitors".
100 items can they expect if the company produces 1,500 capacitors.
What is Unitary Method?The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.
For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.
12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.
As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.
This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.
Given:
An electronics company finds that 5 out of 75 capacitors produced are damaged.
So, if there are 1500 capacitors then the damaged one are
= 5/ 75 x 1500
= 5 x 20
= 100 capacitors
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what is the square root of 2
Answer:
heyy its 1.41421356237
Answer:
1.414
Step-by-step explanation:
square root of two is 1.414
Which expression best represents “7 fewer than 4 times a number x”?
Answer:
4x-7
Step-by-step explanation:
Simplify the following expression to an answer with only positive exponents.
(2x^5y^7)(-5x^4z^-5) / y^12z^6
Answer:
The correct answer is (edit: b).
Step-by-step explanation:
[tex]\frac{(2x^5y^7)(-5x^4z^{-5})}{y^{12}z^6}\\\\\frac{-10x^9y^7z^{-5}}{y^{12}z^6}\\\\\frac{-10x^9}{y^5z^{11}}[/tex]
Help I will make you as brainlist please
Answer: C
Step-by-step i just know
PLEASE HELP! WILL MARK BRAINLIEST IF U ANSWER CORRECTLY! IF WRONG U WONT GET IT
Answer:
144yd^2
Step-by-step explanation:
Did this before
Please help me!!!!!!!!
60.5 feet
16 feet
75.5 feet
How many squares of grass will need to be ordered to fill the entire park
Answer:
73084
Step-by-step explanation:
60.5*16*75.5
968*75.5
73084
IF 2 + 2 = 4 AND 4 + 4 = 8 WHY AM I STILL BROKE !!!!!
Answer:
You are still broke because you forgot that you have no money to add with
Step-by-step explanation:
there are 153 people in line for a ride at an amusement park the ride can take 40 people at a time how many times will the ride need to run so that every person in the lines gets a turn?
Answer:
Step-by-step explanation:
we need to divide
153/40=3.825
the ride needs to run 4 times
5. Dennis is selling chocolate bars for a
fundraiser, and if he sells over $175 worth of
candy, he'll win a prize. If chocolates sell for
$2.50 a bar, and Dennis has already sold $40
worth of candy, then how many more bars does
he have to sell in order to win a prize?
Variable:
Inequality:
Solution:
Answer: 54, inequality would be 2.50x+40>or=175 i think
Step-by-step explanation:175-40=135 divided by 2.50=54
Answer: 54, inequality would be 2.50x+40>or=175 i think
Step-by-step explanation:175-40=135 divided by 2.50=54
7-x=-2
find the variable
Answer:
Step-by-step explanation:
7-x=-2
-x=-2-7
-x=-9
x=9
Please help, she never told is how to do this and i cant find any answers
Answer:
The variable is going to be divided
you solve by multiplying 9 to both sides to eliminate the fraction, then add 6 on both sides to get the variable by itself.
Step-by-step explanation:
A right cone has a slant height of 17 feet, and the diameter of the base is 30 feet. What is the height, h, of the cone?
I WILL MARK BRANILEST
Answer:
8
Step-by-step explanation:
Answer:
Its 8 100%
Step-by-step explanation:
Edit: OK its right here is the The work And no I didn't copy
You decide to buy a custom frame for a painting which measures 4 by 6 inches. If the framing material costs $2 per inch, what is the total cost of framing material?
Answer:
6 x 4 = 24 x $2 = $48
Step-by-step explanation:
The total cost of the rectangular frame is C = $240.
What is rectangle?A rectangle is a two-dimensional shape in which the opposite sides are parallel and equal to each other and all four angles are right angles.
Given that, a painting measures 4 by 6 inches, the framing material costs $2 per inch,
We need to find the total cost of framing material
The perimeter is given by:
P = 2x(L + W)
In this case, we know that the frame is 6 inches by 14 inches, then the perimeter will be:
P = 2x(6in + 14in)
P = 2x20in = 40in
Since, the framing material costs $6 per inch, then the total cost of the frame will be:
cost = 40x$6 = $240
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Find the slope of the line that passes through the given
points.
1. (-10, -12), (-8,-8), (-6. - 4); (-4, 0)
2. (-4, 2), (0, 1), (4,0), (8, -1)
3. (-7, -7), (0, -8), (7, -9). (14, -10)
4. (-2, 2), (0, 3), (2, 4), (4, 5)
5. (2, -11), (4, -25), (6, -39), (8, –53)
6. (-11, -38), (-5, -14), (1,10), (7, 34)
Find the slope and the y-intercept of the graph of the
linear equation,
7. y = -4x + 6
8. y = -1
9. 4r + y = -1
10. y = 6x – 4
11. -x - 4y + 8 = 0
12. 2.r - 12y + 10 = 0
Answer:
Step-by-step explanation:
4x − 3= −12x + 13
4x + 12x = 13 + 3
16x = 16
x = 1
1)
The slope of the line passing through these points is 2.
2)
The slope of the line passing through these points is -1/4.
3)
The slope of the line passing through these points is -1/7.
4)
The slope of the line passing through these points is 1/2.
5)
The slope of the line passing through these points is -7.
6)
The slope of the line passing through these points is 6.
7)
The slope of y = -4x + 6 is -4 and the y-intercept is 6.
8)
The slope is 0 and the y-intercept is -1.
9)
The slope is -4 and the y-intercept is -1.
10)
The slope of y = 6x - 4 is 6 and the y-intercept is -4.
11)
The slope is -1/4 and the y-intercept is 2.
12)
The slope is 1/6 and the y-intercept is 5/6.
What is an equation of a line?The equation of a line is given by:
y = mx + c
where m is the slope of the line and c is the y-intercept.
Example:
The slope of the line y = 2x + 3 is 2.
The slope of a line that passes through (1, 2) and (2, 3) is 1.
We have,
Slope = (d - b) / (c - a)
Where (a, b) and (c, d) are the two points.
Now,
The slope between (-10, -12) and (-8, -8) is 2.
The slope between (-8, -8) and (-6, -4) is 2.
The slope between (-6, -4) and (-4, 0) is 2.
Therefore,
The slope of the line passing through these points is 2.
The slope between (-4, 2) and (0, 1) is -1/4.
The slope between (0, 1) and (4, 0) is -1/4.
The slope between (4, 0) and (8, -1) is -1/4.
Therefore,
The slope of the line passing through these points is -1/4.
The slope between (-7, -7) and (0, -8) is -1/7.
The slope between (0, -8) and (7, -9) is -1/7.
The slope between (7, -9) and (14, -10) is -1/7.
Therefore,
The slope of the line passing through these points is -1/7.
The slope between (-2, 2) and (0, 3) is 1/2.
The slope between (0, 3) and (2, 4) is 1/2.
The slope between (2, 4) and (4, 5) is 1/2.
Therefore,
The slope of the line passing through these points is 1/2.
The slope between (2, -11) and (4, -25) is -7.
The slope between (4, -25) and (6, -39) is -7.
The slope between (6, -39) and (8, -53) is -7.
Therefore,
The slope of the line passing through these points is -7.
The slope between (-11, -38) and (-5, -14) is 6.
The slope between (-5, -14) and (1, 10) is 8.
The slope between (1, 10) and (7, 34) is 6.
Therefore,
The slope of the line passing through these points is 6.
Now,
The equation in slope intercept form is y = mx + c
where m is the slope of the line and c is the y-intercept.
So,
The slope of y = -4x + 6 is -4 and the y-intercept is 6.
The equation y = -1 represents a horizontal line, so the slope is 0 and the y-intercept is -1.
To find the slope-intercept form, we can rewrite 4r + y = -1 as y = -4r - 1.
Therefore,
The slope is -4 and the y-intercept is -1.
The slope of y = 6x - 4 is 6 and the y-intercept is -4.
To find the slope-intercept form, we can rewrite -x - 4y + 8 = 0 as -4y = x - 8, then divide both sides by -4 to get y = (-1/4)x + 2.
Therefore,
The slope is -1/4 and the y-intercept is 2.
To find the slope-intercept form, we can rewrite 2r - 12y + 10 = 0 as 12y = 2r + 10, then divide both sides by 12 to get y = (1/6)r + 5/6.
Therefore,
The slope is 1/6 and the y-intercept is 5/6.
Thus,
The slope and the y-intercept are given above.
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PLEASE I NEED THIS ANSWER ASAP IF YOU ANSWER I WILL PUT YOU A BRAINLEST
Hope made 333 different yo-yos. She used 1\dfrac341
4
3
1, start fraction, 3, divided by, 4, end fraction meters of string for the first yo-yo, 111 meter of string for the second yo-yo, and a total of 4\dfrac134
3
1
4, start fraction, 1, divided by, 3, end fraction meters of string.
Hope uses the equation, 1\dfrac34+1+y=4\dfrac131
4
3
+1+y=4
3
1
1, start fraction, 3, divided by, 4, end fraction, plus, 1, plus, y, equals, 4, start fraction, 1, divided by, 3, end fraction to represent the situation.
What does the variable yyy represent in the equation?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Number of yo-yos Hope made
(Choice B)
B
Number of meters of string in third yo-yo
(Choice C)
C
Total number of meters of string Hope used
Answer:
choice b maybe?
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
One angle of an isosceles triangle measures 26°. Which other angles could be in that isosceles triangle
Answer:
the other angles would be each 77°
and 2 angles are equal in an isosceles triangle
Step-by-step explanation:
hope it helps you
Rashida keeps her collection of 162 books on three shelves there are 42 books on the first shelf there are x books on the second self the number of books on the third shelf is 2 times the number of books on the second shelf what is the value of x the number of books on the second shelf
Answer:
f
Step-by-step explanation:
162-42=120
divide 120 by the other 2 shelves and get 60. if its 2 times the number of books on the second shelf its 60.
I will give brailiest
Estimate the sale price of the item.
30% off a bike for $432.43
Answer:
Purchase Price:
$432
Discount:
(432 x 30)/100 = $129.60
Final Price:
432 - 129.60 = $302.40
Step-by-step explanation:
Answer:
About $129
Step-by-step explanation:
30% of $432.43 rounds to 30% of $430 = .3 x 430 = About $129 dollars
Hope that helps!
PLEASE HELP! GIVING POINTS!
Find mP.
A. 27°
B. 31°
C. 59°
D. 86°
Answer: Answer is actually A) 27
Step-by-step explanation: :)
Write an expression for the sequence of operations described below.
Answer:
[tex]\frac{8 + c}{b}[/tex]
Step-by-step explanation:
this is what i got
Bis Devis traveled 372.645 miles last
sear on business. What is the value
of 6 in 372.6452
Answer:
dont forget the point of contact dedo I show you how w
Chris bought 2 chicken sandwiches and 3 bowls of vegetable soup for $16.50. Jim bought 1 chicken sandwich and 2 bowls of vegetable soup for $9.50. What was the cost of a bowl of soup? A) $4.50 B) $2.50 C) $5.50 D) $3.25
Answer:
Step-by-step explanation:
This is a system of equations, best solved by using the elimination method. But first we have to come up with our 2 equations that represent the system. Let's call the chicken sandwiches "c" and the bowls of soup "b".
If Chris bought 2 chicken sandwiches and 3 bowls of soup for $16.50, his equation is:
2c + 3b = 16.50
If Jim bought 1 sandwich and 2 bowls of soup for $9.50, then his equation is:
1c + 2b = 9.50
We put these together, one above the other, lining up the variables:
2c + 3b = 16.50
1c + 2b = 9.50
If we multiply the second equation by -2 we can eliminate the c variable. Multiplying the second equation by -2 changes only that equation, making the "new" system:
2c + 3b = 16.50
-2c - 4b = -19.00
When we add straight down each column, the c's cancel each other out (they subtract away) and in the b column we have -1b, and in the answer column, we have -2.50.
That equation is -b = -2.50 or b = 2.50
A bowl of soup costs $2.50, choice B
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6.) ∆DAY
7.) SAS
Hope it helps ⭐⭐⭐What is the exact circumference of the circle?
10 ft
20 ft
40 ft
60 ft
Answer:20 ft
Step-by-step explanation:
plsss help (ZOOM TO SEE FULL PIC)
Answer:
350+280+553=1183
C
Step-by-step explanation:
algebra 1 evaluating algebraic expressions?
3x=10
Answer:
x=3.33333333
Step-by-step explanation:
Answer:
x = 10/3
Step-by-step explanation:
Divide the coefficient of x (3) on both sides, 3x/3 = 10/3 - then divide the three and the three to get 1 (which stays as x) and then divide ten by three or just leave it as an improper fraction (this all depends on what your teacher's preference) and then you will get the final answer of x = 10/3 or x = 3.3.
Hope this helps, and if you need additional help regarding this topic feel free to ask me again in the comment section :)
