Answer:
how much heat is needed to raise the temperature of 20g cooper from 25c to raise the temperature of 20g of cooper from 25 c to 40c?
Step-by-step explanation:
Harold took five different samples of thirty-five randomly selected students from the 520 students he surveyed. The
means of the samples are shown below.
Sample
Sample 1
Sample 2
Sample 3
Sample 4
Sample 5
Mean
3.4
3.2
4.1
4.6
3.1
The predicted mean of the population will fall between
3.1 and
15
Answer:
d!
Step-by-step explanation:
just took the test! gl
What is the solution to the inequality -7(1+5m)-29<300+7m
Answer:
234556678
Step-by-step explanation:
A thermometer is used to calculate the average kinetic energy of the molecules in in a substance what is the theoretical temperature at which molecular motion stop?
A. 9 degrees Celsius
B. 32 degrees Fahrenheit
C. Absolute
D. 273 Kalvin
Find the Perimeter of
Answer:
78
Step-by-step explanation:
Since the two angles at the bottom are congruent, you would the two equations equal to each other. So it would be:
5x-19=2x+11
Once you simplify, you will find that x= 10.
Then you plug in x for both equations, so 5(10)-19= 31 and 2(10)+11= 31
So you add up the sides: 31+31+16= 78
5x - 70 = 10
X =
I’ll give brainliest for first answer
Answer:
x = 16
Step-by-step explanation:
[tex]5x - 70 = 10 \\ 5x = 10 + 70 \\ 5x = 80 \\ x = \frac{80}{5} \\ x = 16[/tex]
will mark brainlyest
Find each percent of change. Round to the nearest whole percent if necessary. State whether the percent of change is an increase or decrease.
original: 30; new: 90
what is the value of y=10x+2 when x = 4
Answer: y = 42
Step-by-step explanation:
y=10x+2 plug in
y=10(4)+2
y=40+2
y=42
How to find 40% of 150
Answer:
multiply 0.40 by 150 answer is the percentage so 60
Step-by-step explanation:
Determine the values of h and k in the equation of g(x).
g(x) = x/x-h+k
3
h=
N
k=
1
X
1
2
3
-3 -2 -1
-1
g(x)
-2
Answer:
it is 300
Step-by-step explanation:
i nailed the quiz
Tom's weight = 500 pounds
If Tom loses 12% of his weight,
what percent of his weight remains?
Answer:
88% of his weight remains
What is the percentage of lemons in this group of lemons and strawberries?
Answer:
50%
Step-by-step explanation:
Help! I'm not sure how to do it
A restaurant offers three sizes of coffee and four differerſt types of coffee.
Coffee can be ordered with or without cream and with or without sugar.
The restaurant also has six bagel options. A bagel can be ordered plain, with
butter, or with cream cheese. How many different ways can you choose a
coffee and bagel at this restaurant?
=======================================================
Work Shown:
There are,
3 sizes of coffee4 types of coffee2 choices for cream (you pick it or you leave it out)2 choices for sugar (same idea as the cream)This means there are 3*4*2*2 = 12*4 = 48 different coffees. We'll use this value later, so let A = 48.
There are 6 bagel options. Also, there are 3 choices in terms of if you order the bagel plain, with butter, or with cream cheese. This leads to 6*3 = 18 different ways to order a bagel. Let B = 18.
Multiply the values of A and B to get the final answer
A*B = 48*18 = 864
There are 864 ways to order a coffee and bagel at this restaurant.
--------------
If you're curious why you multiply the values out, consider this smaller example.
Let's say you had 3 choices of coffee and 2 choices for a bagel. Form a table with 3 rows and 2 columns. Place the different coffee choices along the left to form each row. Along the top, we'll have the two different bagel choices (one for each column).
This 3 by 2 table leads to 3*2 = 6 individual table cells inside. Each cell in the table represents a coffee+bagel combo. This idea is applied to the section above, but we have a lot more options.
What is the value of 20+6•5/-2
Answer:
The answer is 25
Step-by-step explanation:
6•5=30
30+20=50
50/-2=25
-6 · f(3) – 6 • g(-1) =
Answer:
−18f+6g
Step-by-step explanation:
Answer:
-24
Step-by-step explanation:
-6 · f(3) – 6 • g(-1) =
= −6⋅f(3)−6⋅g(−1)=−6(−2)−6(6)
= 12 - 36
= -24
Have a good day :p
7 + 2y^2
Evaluate the expression for
Y = 5.
Please help me
Answer:
107
Step-by-step explanation:
We first need to input the values of the variables.
7 + 2 x 5^2
7+10^2
7+100 = 107
Evaluate 4tan 45°. can someone help me im confused
Answer:
4
Step-by-step explanation:
tan 45° = 1
so,
4tan 45° = 4*1
= 4
A bus is traveling at a constant speed and goes 8.4 miles in 5 minutes. Using your strategy, how far does the bus travel in one minute?
Answer:
The bus travels 1.68 miles in one minute
Step-by-step explanation:
Make a proportion:
? = how far the bus travels
5 - 8.4
1 - ?
Solve: 8.4×1÷5= 1.68
PLEASE HELPPPP QUICK 100 POINTS ASAP PLEASEE
Graph a line representing the proportional relationship with slope 3 containing the point (2,6)
Please please please help!! I need this URGENT
Dan buys a car for £2700.
It depreciates at a rate of 1.4% per year.
How much will it be worth in 5 years?
Give your answer to the nearest penny where appropriate.
Answer:
So it depreciates at a rate of 1.4% so 25% a year and you do £2700 multiply by 25 each year £2700 multiply by 25 x 5 = £540 in 5 years
Step-by-step explanation:
Answer:
£
2516.22
Step-by-step explanation:
£
2516.22
John spent $75 on a shopping trip for new clothes last week. He had expected to spend $100 on clothes. A 6-column table with 1 row. Column 1 is labeled Approximate Value with entry 100 dollars. Column 2 is labeled Exact Value with entry 75 dollars. Column 3 is labeled Error with entry 25 dollars. Column 4 is labeled Absolute Error with entry blank. Column 5 is labeled Ratio with entry blank. Column 6 is labeled Percent Error with entry blank. How much was the absolute error in his estimate? $
Answer:
Absolute Error is ±25$Step-by-step explanation:
Approximate Value ⇒ 100 dollarsExact Value ⇒ 75 dollarsError ⇒ 25 dollarsAbsolute Error ⇒ ±25 dollarsRatio ⇒ 25/75 = 0.3333Percent Error ⇒ 33.33%Answer:
The answer is 25
Step-by-step explanation:
Please give the other person brainliest
THIS IS AN EMERGENCY PLEASE HELP ME!!!!!!!!!
With a coupon, you can get a pair of shoes that normally costs $80 for only $68. What percentage was the discount?
Answer:
Not sue but I think it’s 12%
Step-by-step explanation:
Solve for k.k/2+1/2=3
Answer:
[tex] \frac{k}{2} + \frac{1}{2} = 3 \\ \frac{k}{2} = 3 - \frac{1}{2} \\ \frac{k}{2} = \frac{(6 - 1)}{2} \\ \frac{k}{2} = \frac{5}{2} \\ \boxed{k = 5}✓[/tex]
k=5 is the right answer.A linear function is shown below. What point is on the graph of the inverse of this function?
a. (1, -1)
b. (-3, 5)
c. (-4, 0)
d. (7, 1)
Answer:
c. (-4, 0)
Step-by-step explanation:
F(X) = -3X - 4
Y = -3X-4
SWAP X AND Y: x = -3y -4
y = -1/3x - 4/3
f⁻¹(x) = -1/3x - 4/3
point (-4,0): x = -4 y = f⁻¹(-4) = (-1/3)*(-4) - 4/3 = 4/3 - 4/3 = 0
Classify triangle ABC by its sides. Then determine whether it is a right triangle.
A (3, 3), B(6, 9), C (6,-3)
I
Answer:
right triangle it is because if u make a graph and put the points u would get a right isosclses triangle
Step-by-step explanation:
The triangle ABC with verticies A(3, 3), B(6, 9) and C(6, -3) is an isosceles triangle.
What is the way of classifying a triangle?If a² + b² < c² then it is an acute angle triangle.
If a² + b² = c² then it is a right-angle triangle.
If a² + b² ≥ c² then it is an obtuse angle triangle.
Given, A ΔABC with verticies A(3, 3), B(6, 9) and C(6, -3).
We know the distance formula [tex]D = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2[/tex].
From this we find AB = √45 units, BC = 12 units and AC = √45 units.
Now, this is an isosceles triangle with two equal sides of √45 units.
learn more about the isosceles triangle here :
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Jalell is trying to earn enough money to buy and ipad. Of the 1200 he needs. he has earned 900$ So far. What percent of the money has Jalell earned so far?
A.90%
B.75%
C.80%
D.85%
A line segment has the endpoints (-7, -4) and (9,8). What are the coordinates of the midpoint
of this line segment?
A. (2, 4)
B.
(-1,2)
C. (-1,-6)
D.
(-8, 2)
E.
(-2,-4)
F.
(1, 2)
Answer:
c
Step-by-step explanation:
i did this in my head
Answer:
F
Step-by-step explanation:
to find x coordinate for midpoint, add both the x coordinates then divide by two. we get x=1
to find y coordinate for midpoint, add both the y coordinates then divide by two. we get y=2
so the coordinates of midpoint is (1,2), which is F
Alton planted a 4 1/6 foot poplar tree in his front yard last year. This year the tree is 8 3/4 feet tall. How manu getting has it grown this year
4 1/6 + 8 3/4 = 12.9166666667
I don't know math honestly
Original Price $69.80 Percent of Discount 60% Sale Price = ?
Answer:
$27.92
Step-by-step explanation:
To find the sale price, multiply the original price by 0.4:
69.8(0.4)
= 27.92
So, the sale price is $27.92
The amount for sale is $27.92.
What is mean by Percentage?A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.
Given that;
Original Price = $69.80
And, Percent of Discount = 60%
Hence, Sale price is find as;
Sale price = $69.80 - 60% of 69.80
= $69.8 - 60/100 × 69.80
= $69.80 - $41.88
= $27.92
Learn more about the percent visit:
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Write the equation of the line passing through the points (-4,-1) and (2,8)
[tex]m = \frac{y_2 - y_1}{x_2 - x_1} [/tex]
Let these points
[tex] \begin{cases}(x_1, y_1) = ( - 4, - 1) \\ (x_2, y_2) = ( 2, 8) \end{cases}[/tex]
[tex]m = \frac{8 - ( - 1)}{2 - ( - 4)} \\ m = \frac{8 + 1}{2 + 4} \Longrightarrow \frac{9}{6} \Longrightarrow \frac{3}{2} \\ m = \frac{3}{2} [/tex]
Slope-Intercept[tex]y = mx + b \\ m = slope \\ b = y - intercept[/tex]
Substitute the value of m in the equation.
[tex]y = \frac{3}{2} x + b[/tex]
Substitute any coordinate points that are given or part of the graph in the equation.[tex](x_, y) = ( - 4, - 1)[/tex]
[tex] - 1 = \frac{3}{2} ( - 4) + b[/tex]
Solve the equation for b-term.[tex] - 1 = \frac{3}{ \cancel{2}} ( \cancel{ - 4}) + b\\ - 1 = 3( - 2) + b \\ - 1 = - 6 + b \\ - 1 + 6 = b \\ 5 = b[/tex]
Rewrite the equation by substituting the value of b in the equation.[tex]y = \frac{3}{2} x + 5[/tex]
Answer[tex] \large \boxed{y = \frac{3}{2} x + 5}[/tex]
If you have any questions related to the answer, feel free to ask via comment.