Answer: are you sure your equation is correct?
Step-by-step explanation:
HELP PLS
(45)² + 97 - 7
Answer:
Step-by-step explanation:
2115
Answer:
456 is the answer
Step-by-step explanation:
(4y(5))^2+9z(7)-7
Expand the linear expression below
-5(-3 x -6)
Answer:
15 x 30
Step-by-step explanation:
Distribute -5 to each variable in the parenthesis.
-5 x -3 = 15
-5 x -6 = 30
15 x 30
50 POINTSSS
Suppose you make coffee and it starts off just too hot to drink, so you put it in the refrigerator temporarily to cool it off. If the original temperature is 190 degrees Fahrenheit and the refrigerator is 36 degrees Fahrenheit, what will the temperature of the coffee be after 3 minutes? (k = 0.12)
Answer:
After 2 minutes the temperature of the hot chocolate will be 149.46 degrees Fahrenheit.
Step-by-step explanation:
We are going to use the Newton's law of cooling to solve this exercise. The Newton's law of cooling states that the amount of heat lost by a body is proportional to the difference of temperature between the body and the enviroment. We are going to use the following function :
T(t)=T_{0}+(T_{i}-T_{0}).e^{-kt}T(t)=T
0
+(T
i
−T
0
).e
−kt
Where ''T(t)'' is the temperature of the body that depends of the variable ''t'' which is time.
Where T_{0}T
0
is the temperature of the surroundings
In this case T_{0}T
0
is the temperature of the freezer
Where T_{i}T
i
is the initial temperature of the body which is cooling. In this case, T_{i}T
i
is the temperature of the hot chocolate
And where ''k'' is a constant. In this case, k=0.12k=0.12 is a data of the exercise
If we replace all the values in the equation and replacing t=2minutest=2minutes
⇒
T(2minutes)=0+(190-0).e^{-(0.12).(2)}T(2minutes)=0+(190−0).e
−(0.12).(2)
T(2minutes)=(190).(e^{-0.24})=149.46T(2minutes)=(190).(e
−0.24
)=149.46
We find that the temperature of the hot chocolate after 2 minutes is 149.46 degrees Fahrenheit
The Candy Shack sells 138 pounds of candy on Tuesday. They sold 71.76 pounds of jelly beans. What percent of the candy sold was jelly beans?
Answer:
52% were jelly beans!Explanation:
Cross multiply the following:
[tex] \frac{x}{100} = \frac{71.76}{138} [/tex]
x times 138 = 138x
100 times 71.76 = 7,176
Divide both sides by 138:
[tex] \frac{138x}{138} = \frac{7176}{138} [/tex]
x = 52%Answer:
52% were jelly beans
Step-by-step explanation:
because im smart and my teacher assigned this :D
12 of the students in the school choir like to sing solos. These 12 students make up 24 percent of the school choir. How many students are in the choir?
Step-by-step explanation:
Let the total number of students in the choir be x
24℅ of x = 12
24/100 of x = 12
6x/25 = 12
6x = 12× 25
6x = 300
x = 50
How many degrees is π/6 radians?
Answer:
30°
Step-by-step explanation:
1 π is 180°, essentially, π/6 = 180 / 6 = 30°
Answer:
π6 radians is 30 degrees
Ok so I’m making this poster for my teacher and it’s kinda very plain any suggestions?????
Answer:
make the background a pattern or something and make the words bigger. then make the clear gap bigger let the words overlap the gap a little bit
Step-by-step explanation:
The tyre of a car wheel has an outer diameter of 30 cm . How many times will the wheel rotate on a journey of 5 km
Answer:
5305.1647 times
Step-by-step explanation:
The Circumference of a circle : πd
d = diameter of circle = 30 cm
Circumference of wheel = π * 30cm = 94.247779 cm
1km to cm
1km = 100000cm
5 km = 500000 cm
Hence, number of times wheel rotate on a 5km journey :
500000 cm / 94.247779 cm
= 5305.1647 times
Margaret and Kevin both have to write an expression that is equivalent to 6 to the power of -4. Part A Who is correct? Part B What is a possible error made by the incorrect student?
Margaret writes 6 x (1/6 to the power of 5)
Kevin writes 1/6 x (6 to the power of 4)
Please help
Answer:
Margret is correct, Kevin is wrong.
Step-by-step explanation:
6^-4 can be written as (1/6)^4
By taking (1/6)^5 times you have (1/6)(1/6)(1/6)(1/6)(1/6), multiplying by 6 would cancel one of those (1/6ths) out. Meaning you would be left with (1/6)^4 or 6^-4
Kevin is wrong because taking 6^4 would not be the same as 6^-4, 6^4= 1296, multiplying that by 1/6 would not give you the same value as 6^-4. His mistake was that he did not take the reciprocal of 6^-4 and incorrectly removed a negative.
Hope this helps, for more assistance please check out: http://linktr.ee/x.squared/
Tom and Jane want to build a round swimming pool in their backyard that is 20 feet across. How many square feet will the pool be? Use 3.14 for pi.
Answer:
area = 314 ft²
Step explanation:
20/2 = 10 = radius
10²(3.14) = 314 ft²
In the following equation, what number represents the slope?
y = - 3x + 8
1) O
2) 1
3) 8
4) -3
Answer:
4) -3
Step-by-step explanation:
Sammi walked from her house to school and then to her friend’s house. The diagram shows the locations of these three places and their distances from each other. Which measurement is closest to the shortest distance in miles from Sammi’s house to her friend’s house?
A 0.6mi
B 1 mi
C 0.45mi
D 0.2mi
Answer: C) 0.45
He is right
Even the 2 figures are similar what scale factor can be used upon the missing length X.
A) 6/13
B) 1/2
C) 5/6
D) 2
The number of decks of popular trading cards is a function f of the number of days d since the shipment arrived.
Calculate the average rate of change from day to day 20.
A. -0.012 decks per day
B. -83.1 decks per day
C. 83.1 decks per day
D. 0.012 decks per day
Answer: its b
Step-by-step explanation:
help asap please!!!!
find the midpoint of the segment with the following endpoints of (-5, 5) and (-10, 2)
Answer:
( -7.5, 3.5)
Step-by-step explanation:
[tex]M=(\frac{x1+x2}{2} ,\frac{y1+y2}{2} )\\\\M=(\frac{-5-10}{2} ,\frac{5+2}{2} )\\\\M=(\frac{-15}{2} ,\frac{7}{2} )\\\\M=(-7.5,3.5)[/tex]
please need help asap
Answer:
134
Step-by-step explanation:
ASAP HELPPPPPP
Increase 100kg by 12.5%
Mrs. Smith cuts 1 2 of a piece of construction paper. She uses 1 6 of the piece to make a flower. What fraction of the sheet of paper does she use to make the flower?
Answer:
1/12 fraction of the sheet of paper is used to to make the flower
Step-by-step explanation:
The size of the piece of paper cut from the construction paper = 1/2
Amount of paper used from this piece to make flower = 1/6
Total amount of construction paper used = 1/2 * 1/6
= 1/12
If m = (3x-1) and n = (3x+1),sh
ow that x² = mn+1 by 9
Answer:
Step-by-step explanation:
m= (3x-1), n= (3x+1)
LHS= x²
RHS= mn+1/9
= [tex]\frac{(3x+1)(3x-1)+1}{9}[/tex]
= [tex]\frac{((3x^{2} )-1^{2})+1 }{9}[/tex]
=[tex]\frac{9x^{2} -1+1}{9}[/tex]
=[tex]\frac{9x^{2} }{9}[/tex]
=x²/1= x²
∴LHS=x²=x²= RHS
Hence proved
Find the slope of the line passing through the points (-9, -6) and [
(-4, 5)
Answer:
y2-y1 5--6 11
-------- =. -------- = ----
x2-x1 -4 --9 5
Step-by-step explanation:
Jada told Noah that she has $2 worth of quarters and dimes in her pocket and 17 coins all together. She asked him to guess how many of each type of coin she has.
Here is a table that shows some combinations of quarters and dimes that are worth $2. Complete the table
Please Help!!!!
I will mark you brainliest
I need these 2 questions
answer to both questions
Answer:
1 no association
Number 2 non inear
ASAP!!! is 5g - 2g and 18g/6 equal? PLEASE EXPLAIN! *WILL MARK AS BRAINLIEST!* WORTH 99 Points!
Answer:
Yes 5g - 2g and 18g/6 is equal
Step-by-step explanation:
If this does not help you im sorry! :(
Hope this helps
5-2=3, 18/6=3 and 3=3
Answer:
Yes 5g - 2g and 18g/6 is equal
Step-by-step explanation:
5-2=3, 18/6=3 and 3=3
A roller coaster slowly chugs up an incline at a steady rate and then picks up speed as it races down the other side.
Click through the graphs and select the one that would best represent the sentence above.
Answer:
I think C the fourth graph
Step-by-step explanation:
Calculate the area of the shape below
7.6 cm
11 cm
Answer:
7.6 x 11 = 83.6
Ignore decimal points, multiply normally.
THEN consider the numbers after the decimal point, count them then place the decimal point in your final answer from the left to the right of the many times the numbers are after the decimal point.
What is the volume of each of the five colors in a 7-inch cubed notepad? Assume each color has the same number of sheets.
a. 68.6 in^3
b. 2.7 in^3
c. 205.8 in^3
d. 343.0 in^3
Answer:
68.6 in^3
Step-by-step explanation:
The formula for the volume of a cube is V=s^3
HOW TO DO THIS HELP ME PLEASE
Answer:
Step-by-step explanation:
Mabey multiply the together
On the set of axes below, draw the graph of y=x^2-4x-1
9514 1404 393
Answer:
axis of symmetry: x = 2
see below for a graph
Step-by-step explanation:
You can complete the square to put the equation in vertex form.
y = (x^2 -4x +4) -1 -4
y = (x -2)^2 -5 . . . . . . vertex is (2, -5)
The equation of the axis of symmetry is the equation of the vertical line through the vertex:
x = 2 . . . . . axis of symmetry
__
Points on the graph are easily found by using integer values on either side of x=2. Points on one side of the axis of symmetry are mirrored on the other side of it.
In one basketball game, Zaid made 7 two-point and three-point baskets to score 17 points. Let x represent the number of two-point baskets, and y represent the number of three-point baskets. This situation can be represented by the system x+y=7 and 2x+3y=17 . How many of each type of basket did Zaid make?
Answer:
y =three point score = 3
x = two point score = 4
Step-by-step explanation:
this question can be solved using simultaneous equation
x + y = 7 eqn 1
2x + 3y = 17 eqn 2
Multiply eqn 1 by 2 to derive eqn 3
2x + 2y = 14 eqn 3
Subtract eqn 3 from 2 :
y = 3
Substitute for y in eqn 1
x + 3 = 7
x = 4
From a well shuffled deck of 52 cards, the probability of NOT drawings a red-face card is ______.
A) 3/26
B) 1/56
C) 23/26
D) 10/13
Answer:
Option "d" might be 11/13
Step-by-step explanation:
Red face cards=8. ( heart and Diamond)
Remove this 8 cards from 52 cards which gives
=>44
Toal cards =52
PROBABILITY = 44/52=>11/13