Need help please show work
Clare estimates that her brother is 4 feet tall. When they get measured at the doctor’s office, her brother’s height is 4 feet, 2 inches.
1. Should Clare's or the doctor's measurement be considered the actual height? Explain your reasoning.
2. What was the error, expressed in inches?
3. What was the error, expressed as a percentage of the actual height?
Answer:
Percentage of error by Clare is estimated as 4.1667 %
Step-by-step explanation:
Height measured by Clare = 4 feet
Height measured by Doctor = 4 feet, 2 inches
Percentage error = ?
Percentage error = Difference/ Actual height *100
Percentage error = (2/ (4*12))*100
Percentage error = 4.1667 %
The accurate height is measured by Doctor, as he have more accurate measurement system.
Hello please help me with this problem. For 38 points Its is algebra 1
answer to this one is b
Step-by-step explanation:
3x {+ 2y = 23
x {– 2y = 8
Answer:
([tex]\frac{31}{4} , \frac{-1}{8}[/tex])
Step-by-step explanation:
use substitution:
3x+2y=23
x=2y+8
plug in 2y+8 for x
3(2y+8)+2y=23
distribute:
6y+24+2y=23
combine like terms:
8y+24=23
solve the equation:
y=-1/8
substitute -1/8 for y:
x=2(-1/8)+8
solve the equation:
x=31/4
please help me..for some reason its not letting me print out the question because it says *dont use such phrases* but anyways
A.
B.
C.
D.
Whats the answer
Evaluate the expression for the given value of the variables (B - 2)² + 10 B=7
20
25
30
35
At the start of 6th grade, Maya measured 140 cm tall. At the start of 7th grade, Maya was 150.5 cm tall. What is the percent increase in Maya's height between the start of 6th and 7th grade?
The center of a circle is at the origin. An endpoint of a diameter of the circle is at (-3, -4). How long is the diameter of the circle?
5
10
25
Answer:
Step-by-step explanation:
x+5=-6
x=-11
(y-3)/2=-5
y-3=-10
y=-7
(-11,-7)
Answer:
(-11,-7)
Step-by-step explanation:
please give me the correct answer if you get it right ill give you brainiest if you don't know the answer leave
A ---> 8
B ---> \sqrt(7)
C ---> 1/2
D ---> 20
If x = 6 units, y = 6 units, and h = 8 units, find the area of the trapezoid shown above using decomposition.
A.
96 square units
B.
72 square units
C.
144 square units
D.
48 square units
Answer:
A
Step-by-step explanation:
What would this look like as a equation
Three less than a variable
Answer:
x-3 or v-3
Step-by-step explanation:
hope this helped!
When a number is decreased by 7.5%, the result is 61. What is the original number to the nearest tenth?
Answer: It's 65.9
Step-by-step explanation:
decreased by 7.5%means 100% - 7.5% = 92.5%92.5% * x = 61x= 61 / 92.5%x = 65.9459to the nearest tenth :original number is 65.9Hope this helps have a awesome day/night❤️✨can somebody plz help for brainliest
What’s the area of this figure?
Answer:
374 mm
Step-by-step explanation:
There are two rectangles and one triangle. This means that we need to add the sum of two rectangles and one triangle together.
Rectangle 1:
19*9=171
Rectangle 2:
19*9=171
Triangle:
8*23*1/2=32
(We divide by 1/2 because it's a triangle)
Now we add them together.
171+171+32=374
In the end, the answer is 374. I didn't show all of my work because most of it was done mentally.
joanne cannot decide which of two washing machines to buy. The selling price of each is $660. The first is marked down by 40%. The second is marked down by 30% with an additional 10% off. Find the sale price of each washing machine. Use pencil and paper. Explain why joanne should buy the first washing machine rather than the second if the machines are the same except for the selling price.
Answer:
The answer is 396 after that its 416
Step-by-step explanation:
So that means
1. 396
2.416
No prob now give me my five star ratings
The ratio of the lengths of corresponding sides
of two similar hexagons is 4:7. Find the ratios of their AREAS.
Answer:
8:49
Step-by-step explanation:
Please help I will reward brainliest
Answer:
Step-by-step explanation:
Supplementary means 2 angles adding up to 180 or the line of AEF in this case
so supplementary pairs like DEH and HEF would add up to 180, same with DEJ and JEF
Answer:
Angle DEH and angle HEJ and HEK and KEF add up to 180 degrees
Step-by-step explanation:
Two angles are called complementary if their measures add to 90 degrees, and called supplementary if their measures add to 180 degrees. ... For example, a 50-degree angle and a 40-degree angle are complementary; a 60-degree angle and a 120-degree angle are supplementary.
Hope this helped! Have a nice day! Plz mark as brainliest!!!
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A rectangular plate has an area of 30 1/16 square inches. If the width of the plate is 4 5/8 inches, what is its length in inches?
Answer:
10 13/16
Step-by-step explanation:
This is what I got please tell me if its wrong
Help Please
Answer Choices
A- y = 2.5x
B- y = x + 10
C- y = -x + 10
D- y = -x + 60
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Answer:
6h+15w
Step-by-step explanation:
well 2 divided by 2 is 6 so 30 divide by 2 is 15
PLEASE HELP!! IM TIMED!
in triangle interior opposite angles is equals to exterior angle, but here it is not that way
Step-by-step explanation:
95+30 cannot be 85 so this the error
A groundskeeper needs grass seed to cover a circular field, 290 feet in diameter.
A store sells 50-pound bags of grass seed. one pound of grass seed covers about 400 square feet of field.
How many square feet does each 50-pound bag cover?
Answer:
4 bags
Step-by-step explanation:
A = r²
A = 3.14 * 145² = 66,018.5 ft²
66,018.5 ÷ 400 ≈ 165.05 lb.
165.05 ÷ 50 ≈ 4 bags
An elevator will hold 780 kilograms. If each person weighs 60,000 grams, how many people will the elevator hold?
12 people
13 people
14 people
15 people
Answer: 13 people
Step-by-step explanation: Each person weighs 60,000 grams=60kgs
Number of people that the elevator will hold=780/60 simplified it and it would be 13
EXPERT HELP: DON'T GUESS and SHOW YOU WORK
Answer:
3
Step-by-step explanation:
the mean is 103, as a result you must find the distance.
from 100 to 103 is 3
from 194 to 103 is 1
from 107 to 103 is 4
Then find the mean again youll get 18/6 which is 3
help with this please free brainlist i promise only if you get it right though
Answer:eirther C or D not sure
Step-by-step explanation:
geometry, I need help thanks
PLEASE HELP!! SEE PICTURE BELLOW
Answer:
c
Step-by-step explanation:
jo puts $4500 in a savings account that earns 5.5% interest. how much money will he have after 18 months?
Answer: $247.50 per month
Step-by-step explanation:
$4,500 x 5.5% = 247.50
Answer:
$247.50 per month
Step-by-step explanation:
Store A sells boxes of rice for $2.50 each.
Store B sells rice by the pound for $2.50 per pound.
The cost of an amount of rice at either store can be modeled by the function c(n) = 2.5n, where n is the number of boxes for Store A and n is the number of pounds of rice for Store B.
The domain of c(n) = 2.5n is all the real numbers.
For each store, drag the restriction needed on values of n for c(n) to model each situation.
Answer:
Step-by-step explanation:
Store A: Sells rice in boxes= whole numbers greater than or equal to zero
Store B: Sells rice by the pound= any number greater than or equal to zero