Answer:
2 2/3
Step-by-step explanation:
7-5 =2
2/3+2= 2 2/3
hope this helpes
Steven warms a cup of a coffee to a temperature of 195°F and then leaves it to cool in a room that is 75°F. This equation represents the
temperature, T, of the coffee in the cup after x minutes.
T = 75 + 120e-0.051
After how many minutes will the temperature of the coffee be approximately 141°F?
Answer:
12 minutes
Step-by-step explanation:
First substitute 141°F for T in the given equation.
Then isolate the exponential term.
Now rewrite the equation as a natural log, and solve for x.
After 12 minutes will the temperature of the coffee be approximately 141°F.
What is temperature?Temperature is the degree of hotness or coldness expressed in terms of any of numerous scales, such as Fahrenheit and Celsius. Temperature suggests the route wherein heat strength will spontaneously flow—i.e., from a warmer body (one at a better temperature) to a less warm frame (one at a lower temperature).
diploma measures of temperature are typically expressed with the ° temperature scale: The sample became heated to 80 °C.
Substitute the 141°F in the equation
⇒T = 75 + 120e-0.051
⇒ 141 = 75 + 120x - 0.051
⇒ 120x = 141 -75 + 0.051
⇒120x = 66.051
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Whats the answer to x^2=9
Answer:
x=3
Step-by-step explanation:
3 times 3 is 9
Answer:
X=3
Step-by-step explanation:
find the area of the composite figure
Answer:
12 x 13 = 156
17 - 12 = 5 x 12 = 60
156 + 48 = 216
Name the interval on which the function graphed below is
increasing.
1. X>1.5
2. X<1.5
3. X>0
4. -1
Answer:
Step-by-step explanation:
x > 1.5
Simplify the Expression
Find the rate of change given the following solutions: (6, 2) and (1, 12).
Answer:
The rate of change is -2
Step-by-step explanation:
f(b)-f(a) 12-2 10
---------- = ------------ = -------- = -2
b-a 1-6 -5
The price of a book, which regularly sells for $24, was marked down by 25%. A coupon reduced the price by another 10%. What was the final selling price?
Answer:
$16.20
Step-by-step explanation:
24.00 × 25%= 6.00
24.00 - 6.00 = 18.00
18.00 × 10%=1.80
18.00 - 1.80 = 16.20
A percentage is a way to describe a part of a whole. The final cost of the book will be $16.2.
What are Percentages?A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.
To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.
Given the cost of the book is $24. Therefore, the cost of the book after a 25% discount is,
Cost of book after discount = $24×(100%-25%) = $18
Now, the cost after the 10% counpon will be,
Cost after the 10% counpon = $18×(100%-10%) = $16.2
Hence, the final cost of the book will be $16.2.
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Brookwood High School is considering adding co-ed soccer to the sports program for the fall
season. In order to get an unbiased sample of interest in soccer, who should the school survey?
A. girls in PE class
B. members of the soccer team
C. every fifth student entering the cafeteria
D. students in freshman homerooms
Answer:
B
Step-by-step explanation:
What does x equal in this problem
What is the range of the graph?
Answer:
D
Step-by-step explanation:
the graph is forever extending to infinity, so there's no definite range
Find the value of x.
Answer:
66
Step-by-step explanation:
subtract each external angle by 180 to find the interior angle.
Since you know that all of the interior angles add up to 540 because 180(n-2)
with n is how many sides in the polygon
so 180(5-2)=540
now take each value and subtract it by 180
180-(45)=135
180-(40)=140
180-(x)=180-x
180-(77)=103
180-(2x)=180-2x
135+140+180-x+103+180-2x=540
738-3x=540
x=66
hope that helps :)
Please give brainliest
aaaa helppp :((((!!!!!!!!!!
Answer:
I am pretty sure it is the third one
Step-by-step explanation:
Answer:
yea for sure the third one
Step-by-step explanation:
What is the degree measure of
A
310
34
58
D
Answer:
34
Step-by-step explanation:
A triangle always has a sum of 180 degrees
First, let us find the right angle
180-149=31
Now find v
180=31+115+x
180-146=x
x=34
6. Mr. Walthour is building a storage shed in a conical shape. The base of the shed is 4 meters in diameter and the height of the shed is 3.8 meters. What is the volume of the shed? Round to the nearest tenth. (Example 2)
I think it helps you..............
Pierce removes the plug from a trough to drain the water. The volume, in gallons, in the trough after it has been unplugged can be modeled by the expression 10x2 −17x + 3, where x is the time in minutes. Choose the appropriate form of the expression that would reveal the time in minutes when the trough is empty.
10(x − 3)2 − 1
10(x − 1)2 − 3
(5x − 1)(2x − 3)
10(0)2 − 17(0) + 3
Answer:
(5x - 1)(2x - 3)
10x^2 - 17 + 3 = (5x - 1)(2x - 3)
Answer:
C.(5x − 1)(2x − 3)
What is the value of the expression below when x=10x=10 and y=4y=4?
8x-7y
8x−7y
Answer:
Step-by-step explanation:
8(10) - 7(4)
8X10 - 7X4
80 - 28
52
(50 points really need help on this it's the last question)
Answer:
Pretty sure it's C
Step-by-step explanation:
trUst mE
A,C,E
Step-by-step explanation:
I got it right on my test
X(-9x^2-5x+9)
..................
And angle measures 54° more than the measure of its complementary angle what is the measure of each angle
Please help me pls plsss
Answer:
c is correct
Step-by-step explanation:
If you look at it, 2x is the slope. Always remember the formula y = mx + b
The mx is your slope. And the whole number is your b or y - intercept
Hope this Helps!! :)
Which expression is equivalent to (18x + 9k) + (2x + 6k)?
16 x + 3 k
20 x + 15 k
20 x + 16 k
36 x + 54 k
20x + 15k is the answer we just have to remove the bracket and add the terms
hope it helps
Answer:
20x + 15K
Step-by-step explanation:
just add like variables (x and Y)
HELP DUE IN 10 MINS! Determine whether the triangle described is right, obtuse, or acute. Show work to justify your answer.
7, 10, 13
This triangle is a obtuse, acute, right triangle?? because blank number is equal to, greater than, or less than another number??
Find the equation of the line between the points (10, – 5) and ( - 2,0).
Answer (assuming it can be in slope-intercept form):
[tex]y = -\frac{5}{12} x-\frac{5}{6}[/tex]
Step-by-step explanation:
1) First, find the slope of the line between the two points by using the slope formula, [tex]m = \frac{y_2-y_1}{x_2-x_1}[/tex]. Substitute the x and y values of the given points into the formula and solve:
[tex]m = \frac{(0)-(-5)}{(-2)-(10)} \\m = \frac{0+5}{-2-10} \\m=\frac{5}{-12}[/tex]
Thus, the slope of the line is [tex]-\frac{5}{12}[/tex].
2) Next, use the point-slope formula [tex]y-y_1 = m (x-x_1)[/tex] to write the equation of the line in point-slope form. Substitute values for [tex]m[/tex], [tex]x_1[/tex], and [tex]y_1[/tex] in the formula.
Since [tex]m[/tex] represents the slope, substitute [tex]-\frac{5}{12}[/tex] in its place. Since [tex]x_1[/tex] and [tex]y_1[/tex] represent the x and y values of one point the line intersects, choose any of the given points (it doesn't matter which one, it will equal the same thing) and substitute its x and y values into the formula as well. (I chose (-2,0), as seen below.) Then, isolate y and expand the right side in the resulting equation to find the equation of the line in slope-intercept form:
[tex]y-(0)=-\frac{5}{12} (x-(-2))\\y-0 = -\frac{5}{12} (x+2)\\y = -\frac{5}{12} x-\frac{5}{6}[/tex]
1/8 to decimal number
Answer: 0.125
Step-by-step explanation:
O 91.7 miles
O 55.5 miles
O 41.7 miles
O 63.8 miles
Answer:
* 55.5 miles
Step-by-step explanation:
17² + b² = 23²
289 + b² = 529
b² = 240
b = 15.491 ≈ 15.5
17 + 23 + 15.5 = 55.5
You can also simply notice B is the only answer with a .5 decimal and thus don't have to add.
20 POINTS AND BRAINIEST!
You want to sell lemonade by the park. Different brands of lemonade have different formulas. You want to sell the lemonade that tastes the most “lemony.” You use 4 cups of lemon concentrate and 6 cups of water.
What fraction of the TOTAL mixture is lemon concentrate? What percentage is this?
Answer:
4/10
Step-by-step explanation:
you add the amount of cups of concentrated lemon plus the amount of water and it is 10. and then it asks for the faction of lemon concentrate out of 10. so it would be 4/10
Hope this helps!!
-6(-2x -y + 4)
It also says to use the distributive property
Answer:
The answer is 12x+6y-24
Step-by-step explanation:
Answer:
12x + 6y -24
Step-by-step explanation:
A pet home owner wants to keep the ratio of cats to dogs at 3:5. She has 21 cats, how many dogs are there in the pet home?
35 dogs
Step-by-step explanation:
The ratio of cats to dogs can also be written as
3/5 = 21/x
x = 35
Simplify
12d divided by 2
Answer:
6d
Step-by-step explanation:
Select the correct answer.
What is the value of y?
A.3
B.8
C.4
D.16