Answer:
Eliminating
Step-by-step explanation:
The given equations are ,
x+y=0x-y= -16Here I would prefer to use Elimination Method. Since there is negative y and positive y in the equations . So we can eliminate y easily and then we can find x. Also , let's solve ,
On addition :-
→ 2x = -16
→ x = -16/2
→ x = -8
Hence the most preferred method is " Elimination Method ".What is the quotient? 7 negative ⁵/7² A. 1/7⁸ B. 1/7³ C. 7³ D. 7⁸ PLZ HURRY
Answer:
1/(7^7)
Step-by-step explanation:
PLEASE HELP ME I CAN'T FAIL THIS, JUST 2 QUESTIONS!!
What is the volume of the composite figure if both the height and the diameter of the cylinder are 3.5 feet? Give the exact answer and approximate to two decimal places.
Find the height in centimeters of a square pyramid with a volume of 455cm3 and a base edge length equal to the height. Give the approximate answer rounded to 2 decimal places.
PLEASE SHOW YOUR WORK
One of the students said that perimeter of above rectangle is 100 squared millimeters. It that answer correct?
9514 1404 393
Answer:
no
Step-by-step explanation:
The perimeter of the rectangle will be measured in millimeters (or some other distance measure). Square millimeters is an incorrect unit for a perimeter.
The perimeter cannot be 100 mm².
A sample of restaurants in a city shows that the average cost of an appetizer is $6.32 with a standard deviation of $0.47. A brand new restaurant wants to get noticed by offering appetizers for a much lower price. To determine the lower price, should the formula use a z-value that is greater than or less than -1?
a.
Greater than -1
c.
Greater than 1
b.
Less than -1
d.
Either way, it doesn’t matter
Answer:
D
Step-by-step explanation:
Is the corrext answer hope it helps
By using a z-value less than -1, we can find a price that is significantly lower than the average cost, and therefore more likely to attract customers.
Option B is the correct answer.
What is a standard deviation?Standard deviation is a measure of the amount of variability or spread in a set of data.
It is calculated as the square root of the variance and is often denoted by the symbol σ (sigma) for a population and s for a sample.
We have,
The z-value formula is used to determine the number of standard deviations a data point is from the mean.
To determine the lower price of appetizers, we want to find a price that is significantly lower than the average cost.
Since the new restaurant wants to offer appetizers for a much lower price, we should use a z-value that is less than -1, which indicates a price that is more than one standard deviation below the mean.
Recall that the z-value formula is:
z = (x - μ) / σ
where x is the value of interest, μ is the mean, and σ is the standard deviation.
Thus,
By using a z-value less than -1, we can find a price that is significantly lower than the average cost, and therefore more likely to attract customers.
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please help middle school math I will mark brainliest (picture included so it could be a little easier)
Point P is plotted on the coordinate grid. If point S is 12 units to the left of point P, what are the coordinates of point S? 10 NAG -12-10-864 -20 32 2 4 6 8 10 12 TP -6 -S 10 - 12 (6.-16) (-6.-16) o(-6,-4) (6,4)
Answer:
(-6, -4)
Step-by-step explanation:
Original coordinates: (6, -4)
POINT S IS 12 UNITS TO THE LEFT OF POINT P.
There are multiple ways to solve this, but I will explain the easiest way.
We can subtract 12 from the x-coordinate.
This because the x-axis runs RIGHT and LEFT.
The y-axis runs UP and DOWN.
6 - 12 = -6
The y-coordinate stays the same.
The new coordinates are: (-6, -4).
On Monday, 362 students went on a trip to the zoo. All 7 buses were filled and 5 students had to travel in cars. How many students were in each bus ?
Answer: There were 51 students
Step-by-step explanation: Divide 362 by 7 which equals 51 with 5 students remaining! Hope this helps!
what are the answers for these two questions? please also tell me HOW you got that answer
9. Multiply the money he has by the portion he spent:
75 x 3/5 = (75 x3)/5 = 225/5 = 45
He spent $45
10. First rewrite 4 1/8 as an improper fraction
33/8
Now multiply by 1/3:
33/8 x 1/3 = (33 x1) /(8 x 3) = 33/24 = 1 3/8
She spent 1 3/8 hours studying math.
help please 10 pts for the first answer
Answer:
A or x < 7/12
NO Links OMG
I need help in these 4
help!!!!!!!!
Answer:
7- 780 m
8- 9,459 cm
9- 864 cm
10- 151 in
Step-by-step explanation:
7- The volume of a rectangular pyramid is:
V=(l x w x h) / 3We just have to substitute the values:
V= 13×12×15 / 3V= 780 m8- The volume of a cone is:
V=hπr² / 3Let's substitute the values and solve:
24×π×19.4² / 39,458.9If you want to round it, the answer will be:
9,459 cm9- The volume of a square pyramid V = a²h / 3, where a is the base and h the height.
So,
V= 12²×18 / 3864 cm10- The volume of the cone is V = hπr² / 3
Then,
V= 16×9×π / 39 is the diameter, which is the radius two times. As you see, what the formula asks is for the radius at the second power -multiplied by itself two times-, but if we get the diameter value instead, there is no need to multiply it. The diameter stays the same.
V= 150.7If you want to round it to the nearest tenth, the answer is:
151 in.Hope this helps!!
please help me :(
......
Answer:
602
Step-by-step explanation:
Need help pls help will gift extra points if help plz explain how you soved it
Answer:
both 125° and the 5x+30 are congruent to eachother. therefore you can go
5x+30=125
subtract 30 from both sides.
5x=95
then divide both sides by 5
x=19
What the answer to 7+8=
candance wants to buy 12 steaks. the steaks cost $11.25 per pound. if each steak weighs 2 pounds and the sale tax rate is 9% what is the total cost of the 12 steaks?
Answer:
294.30
Step-by-step explanation:
12 x 2 = 24
24 x 11.25 x 1.09 = 294.30
Please please fast I need it fast
Answer:
0
Step-by-step explanation:
Eliminate the opposite
Answer:
Its same as
a-a
=0
Have a great day!
It is 186 miles from Sergio's house to his parents' house.
Twice a year, he drives to visit them.
Then he drives home.
How many miles does he drive on the two round-trips?
ANSWER CHOICES-
372 miles
424 miles
724 miles
744 miles
Answer:
Step-by-step explanation:
He drives double the distance from his house to his parents house.
Answer:
answer: 744
Step-by-step explanation:
He drives 744 because 186 × 4 = 744 because its 186 to go there then 186 to go back then 186 to go there then 186 to go back so that adds up to 744 Hope that helps!
Find the value of x.
2x 1250
160°
110°
to
147°
112°
X =
Answer:
789
Step-by-step explanation:
7 ate 9
This is the first year Janis is playing softball. She has been practicing her batting. On her last swing the bat made an arc with a radius of 49 inches and swept
through 283 of rotation. Assuming the arc is circular, what is the distance the tip of the bat travels to the nearest inch?
Answer:
2*pi*49*283/360=242 (to the nearest inch)
the distance the tip of the bat travels 242 inches.
To convert a distance of 13,000 feet to miles, which ratio could you multiply
by?
Answer:
2.46212121 miles
-
convert a mile measurement to a foot measurement, multiply the length by the conversion ratio. The length in feet is equal to the miles multiplied by 5,280
The mile, sometimes the international mile to distinguish it from other miles, is the British imperial unit and the US customary unit, both systems are based on the older English unit of length equal to 5,280 feet, or 1,760 yards, and standardised as exactly 1,609.344 metres by international agreement in 1959
To convert 13,000 feet to miles, you can multiply it by the ratio of 1 mile / 5,280 feet.
To convert a distance of 13,000 feet to miles, you can multiply it by the conversion factor of 1 mile divided by 5,280 feet.
We know that
1 mile= 5280 feet
Then we will use the ratio of 1 mile / 5,280 feet, the numerator 1 represents the equivalent distance in miles, and the denominator 5,280 represents the equivalent distance in feet.
So, 13000 feet x 1 mile/ 5280 feet
= 13000/ 5280
= 2.462121212121212 miles
Therefore, to convert 13,000 feet to miles, you can multiply it by the ratio of 1 mile / 5,280 feet.
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Helppppppppppp!!!!! Please
Answer:
The answer is C.
Step-by-step explanation:
angle 5 and 4 makes a line which is 180 and since angle 5 equals 57 , 180-57=123.
Amy knits 1/10 of a scarf in 4/5 of an hour. What fraction of scarf can Amy knit in 1 hour
Answer:
Amy can knit [tex]\frac{1}{8}[/tex] of a scarf in 1 hour.
Step-by-step explanation:
This question can be solved by proportions, using a rule of three.
We have that:
1/10 of a scarf - 4/5 of an hour
x of a scarf - 1 hours.
Applying cross multiplication:
[tex]\frac{4x}{5} = \frac{1}{10}[/tex]
[tex]x = \frac{5}{10*4} = \frac{5}{40} = \frac{1}{8}[/tex]
Amy can knit [tex]\frac{1}{8}[/tex] of a scarf in 1 hour.
Is 6 hours for $4.80 the same rate as 10 hours for $8?
Answer:
yes it is the same
Step-by-step explanation:
4.80/6=0.8
8/10=0.8
Mark me brainliest please
Amplitude of y=-2 sinx
Answer:
for y=2sinx , the amplitude is 2 .
Step-by-step explanation:
I searched it up :)
HELP ME PLEASEEEEEEEEEEE
Answer: g=8
Step-by-step explanation: Hope this help :D
Which of the following represents the area of a rectangle whose length is 3x + 5 and whose width is. x – 2?.
A.) 3x^2 + x – 10
B.) 3x^2 – 10
C.) 3x^2 – 11x – 10
D.) 3x^2 – x – 10
The new number 200 is 400 less than the original number what is the approximate per percent change
Answer:
200+400=600
400/600=2/3=66.6%
Each triangular face of the following solid figure is congruent. If the area of each face is 12 square inches, what is the
surface area of the entire figure?
Answer:
the surface area is 48in^2 because there are 4 faces and you have to find the surface are in which you must multiply 12 by 4.
Step-by-step explanation:
the equation 4 = 2 + 4x is modeled below
solve for x
Answer:
J. Is the answer
Step-by-step explanation:
4 x 1/2 is 2 lol
Answer:
x is equal to 1/2
Step-by-step explanation:
Subtract 2 from both sides to get
2 = 4x
divide both sides by 4 to get
2/4 = x
then simplify 2/4 to get your answer of 1/2
ms. irwin teaches four periods of weight training. she required each student in thr class to record the maximum amount of weight lifted for the squat. based upon the data listed below, which period had the greatest mean score?
period 1 : 100, 100, 125, 125, 130, 130
period 2 : 90, 125, 125, 130, 135, 135
period 3 : 90, 90, 100, 125, 125, 125
period 4: 90, 90 , 90, 100, 100, 125
a. period 1
b. period 2
c. period 3
d. period 4
Answer:
a
Step-by-step explanation:
Please mark brainliest
im a boy im in 7th grade 13 years old and single i need some help
single too and 13 I can't help bc I ain't smart
What percentage of the people surveyed were females who own a blue car?
To figure this out you need to calculate the total amount of women by the 75% who own a blue car. So this means 120 divided by 75%