Answer:
The instantaneous velocity at t = 1 will be:
[tex]\frac{d}{dt}\left(-8-9t\right)=-9[/tex]Step-by-step explanation:
Given the position of an object at a time [tex]t[/tex]
[tex]s\left(t\right)=-8-9t[/tex]
As we know that determining the derivative of the position function with respect to time t would give us the instantaneous velocity, so
[tex]\frac{ds}{dt}=\frac{d}{dt}\left(-8-9t\right)[/tex]
Applying the sum/difference rule:
[tex]\left(f\pm g\right)'=f\:'\pm g'[/tex]
[tex]\frac{ds}{dt}=-\frac{d}{dt}\left(8\right)-\frac{d}{dt}\left(9t\right)[/tex]
as
[tex]\frac{d}{dt}\left(8\right)=0[/tex] ∵ [tex]\frac{d}{dx}\left(a\right)=0[/tex]
and
[tex]\frac{d}{dt}\left(9t\right)=9[/tex] ∵ [tex]\mathrm{Take\:the\:constant\:out}:\quad \left(a\cdot f\right)'=a\cdot f\:'[/tex] and [tex]\frac{d}{dt}\left(t\right)=1[/tex]
so the expression becomes
[tex]\frac{ds}{dt}=-\frac{d}{dt}\left(8\right)-\frac{d}{dt}\left(9t\right)[/tex]
[tex]=-0-9[/tex]
[tex]=-9[/tex]
As the derivative is constant.
Therefore, the instantaneous velocity at t = 1 will be:
[tex]\frac{d}{dt}\left(-8-9t\right)=-9[/tex]
Mia uses of a bag of soil in the morning and of a bag in the afternoon
About how much soll does she use in one day?
Answer: 2 bags of soil
Step-by-step explanation:
A circle has radius 40 cm. Which of these is closest to its area, in square centimeters?
Answer:
251 cm2
Step-by-step explanation:
The area of the circle whose radius is 40 cm is 5026 cm².
What is a circle?A circle is a curve sketched out by a point moving in a plane so that its distance from a given point is constant; alternatively, it is the shape formed by all points in a plane that are at a set distance from a given point, the centre.
Given that the radius of the circle is 40cm. Therefore, the area of the circle will be,
Area of the circle = π × Radius²
= π× (40cm)²
= 1600π cm²
= 5026.54 cm²≈ 5026 cm²
Hence, the area of the circle is 5026 cm².
Learn more about Circle here:
https://brainly.com/question/11833983
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if it takes 50 cubes to fill up a rectangular prism, what would be the volume of the rectangular prism?
PLEASE HELP !
Answer:
50 unit^3
Step-by-step explanation:
you didnt give a unit, and i assumed the cubes are equal to one cubic of that unit, so cant really help
Answer:
volume of 50 cube= volume of rectangular prism
Step-by-step explanation:
82+9/3? find the answe using pemdas
Answer:
82+(9/3)
Division comes first.
9/3=3
82+3=85
85
Step-by-step explanation:
Answer:
85
Step-by-step explanation:
PEMDAS
P - Parenthases
E - Exponents
M - Multiply
D - Divide
A - Add
S - Subtract
Using the order of opperations above, division comes before addition, so:
9 / 3 = 3.
Then you move on to the left:
3 + 82 = 85.
PLEASE HELP ME FOR BRAINLY IF ANSWER IS RIGHT look at he pic
Answer:
0.62, 0.60, Store B
Step-by-step explanation:
Store A is 0.62 per can
Store B is 0.60 per can.
The better deal is B
Solve for X please help
Answer:
71 degrees
Step-by-step explanation:
Sum of three angles of triangle=180
Let's find the third angle
73+36=109
180-109=71
Vertical angles are congruent so x= angle 3
So x is 71 degrees
Answer:
79 degrees
Step-by-step explanation:
Remember: Triangles always add up to 180 degrees.
x is vertical to the missing angle in the triangle, which means x and the missing angle are equal.
to find the missing angle in the triangle, you add up the other angle measurements and subtract from 180.
36+73=109
180-109=71
The third mising angle is 71 degrees.
this means x is also 71.
Hope this helps!
CAN ANYONE DO IT. PLZ
Answer:
70°Step-by-step explanation:
see image below
Answer:
10 is your answer.
Step-by-step explanation:
pls give me brainlest
A building with a height of 6 m casts a shadow that is 8 m long while a taller building casts a 24 m long shadow. What is the height of the taller building?
Answer:
I am pretty sure it is 22m
Step-by-step explanation:
minus 2
find the ragio p:r if p:a=1:2, a:b=2:3, b:c=5:1, c:r=3:2
Answer:
p : r = 5 : 2
Step-by-step explanation:
Expressing the ratios in fractional form, then
[tex]\frac{p}{r}[/tex] = [tex]\frac{p}{a}[/tex] × [tex]\frac{a}{b}[/tex] × [tex]\frac{b}{c}[/tex] × [tex]\frac{c}{r}[/tex]
= [tex]\frac{1}{2}[/tex] × [tex]\frac{2}{3}[/tex] × [tex]\frac{5}{1}[/tex] × [tex]\frac{3}{2}[/tex]
= [tex]\frac{30}{12}[/tex]
= [tex]\frac{5}{2}[/tex]
Thus ratio p : r = 5 : 2
1 If x = 6, which inequality is true? A 5 - 3x > 10 B 3 - 5x 13 D 5 - x < -3
Answer:
sorry what do you write for B???
3-5x?? 13
A rotating sprinkler that sprays water at a radius of 7 feet is used to water a lawn. Determine the area of the lawn that is being watered. Use 3.14 for pi. Round to the nearest tenth.
Answer:
49Pi
Step-by-step explanation:
Area of a circle is = to pi(r)^2
A cyclist starts a journey from town A. He rides 10km north then 5km east and finally 10 km on a bearing of M45°E
Answer:
75 km
Step-by-step explanation:
Which of the following expressions is equivalent to –6?
A.
3-(-2)-(-1)
B.
9-(-17)
C.
4-16 divided by -2
D.
-2(4-1)
Answer:
the correct answer po is letter A
Step-by-step explanation:
Tinatamad akong mag explain pero tama po 'yan
7th GRADE MATH hellp
Answer:
I took 5 minutes to think this through, hope I'm right cause been a long time since my brain killed me over this one question. I believe the answer to this is B, cause the students might of gotten two chances to get picked so I'll stick with B. So sorry if I'm wrong. 3 students 2 chances... yea it's B.
Step-by-step explanation:
The graph below represents the price of sending picture messages using the services of a phone company. What is the constant of proportionality?
A graph is shown. The values on the x axis are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. The values on the y axis are 0, 22, 44, 66, 88, 110, 132, 154, 176, 198, 220. Points are shown on ordered pairs 0, 0 and 2, 44 and 4, 88 and 6, 132 and 8, 176. These points are connected by a line. The label on the x axis is Picture Messages Sent. The label on the y axis is Price in cents.
10
11
21
22
Answer:
the answer is 22
Step-by-step explanation:
i took the test
Answer:
22
Step-by-step explanation:
A convenience store sells 1/3 pound of one brand of trail mix for $1.50 and 1/2 $2.15. Witch brand has lower price per pound?
Answer:
1/2 pound brand has a lower price
Step-by-step explanation:
convert both to having 6 for denominator
2/6 and 3/6 if you buy a whole pound the 1/3 is going to cost $4.50 and the 1/2 is going to cost $4.30
The price of pears at a farm is $1.41 per pound. Which equation can be used to determine c, the total price of n pounds of pears? (1 point)
a
c equals 1.41 over n
b
c = 1.41 + n
c
c = 1.41 − n
d
c = 1.41n
Answer:
d
c=1.41n
Step-by-step explanation:
to find your answer you will have to multiply 1.41 by n cause it says 1.41 per pound so you multiply to get your answer
Please help it’s due tmr!!!
Answer:
7
Step-by-step explanation:
we need to first find the area
4.5 x 4 = 18
1.5 x 2 = 3
18 - 3 = 15
15/2.25 = 20/3
20/3 is 6.666666666666666666666666666666.....
6+1 = 7
Answer:
7
Step-by-step explanation:
we need to first find the area
4.5 x 4 = 18
1.5 x 2 = 3
18 - 3 = 15
15/2.25 = 20/3
20/3 is 6.666666666666666666666666666666.....
6+1 = 7
Write an equation in slope-intercept form (y = mx + b) for the line that has a y-intercept of (0, -5) and a slope of 2/3
UAGH I AM SICK OF BEING PUSHED AROUND....ITS TIME THAT RATS STICK UP FOR THEMSELVES!!! ARE YOU WITH ME?!
Answer:
yaaaa
Step-by-step explanation:
p = 240 – 172
g=
9 x 8/-24
Work out the value of p×q
Step-by-step explanation:
I hope I got it right and I hope this helps
ill mark brainliest if you are correct
Answer:
$24/3shirts = c/7 shirts c=56
Step-by-step explanation:
Answer:
56
Step-by-step explanation:
763 thousandths as a scientific notation
Answer:
7.63 * 10^-1
Step-by-step explanation:
Answer:
7.63 x 10^-1
Hope this helped
Can someone please help me with this question?
Answer:
PQ = 9.4
Step-by-step explanation:
to solve for PQ, use the distance formula
d = [tex]\sqrt{(x2-x1)^{2} + (y2-y1)^{2} }[/tex]
use two points
(x1,y1) = (4,3)
(x2,y2) = (-4,-2); and substitute into distance formula
d = PQ = [tex]\sqrt{(4+4)^{2} + (3+2)^{2} }[/tex] = [tex]\sqrt{8^{2} +5^{2} }[/tex] = [tex]\sqrt{64+25}[/tex] = [tex]\sqrt{89}[/tex] = 9.4
Paula has $54. She bought some pencils, each costing $0.75, and a paper ream for $2.50. She is left with $42.50 after buying pencils and the ream of paper. She uses the equation Syntax error from line 1 column 49 to line 1 column 73. Unexpected 'mathsize'. to find the number of pencils she bought. How many pencils did Paula buy?
Answer:
12 pencils
Step-by-step explanation:
let no. of pencils bought be x.
54 - 0.75x - 2.50 = 42.50
9 = 0.75x
x = 12
Topic: algebraic equations
If you like to venture further, feel free to check out my insta (learntionary). I'll be constantly posting math tips and notes! Thanks!
Round 824.0472 to the nearest hundredth.
Answer:
824.05
Step-by-step explanation:
the hundreths place is two spots behind the decimal, there is a four. Look at the number next to it is a 7 so you round up
i need to get this done
Answer:
x = 17 and y = 8
Step-by-step explanation:
Since (6x + 3) and (8x - 31) are alternate interior angles, they are congruent.
Therefore, you can set them equal to each other and solve for x.
8x - 31 = 6x + 3
Combine like terms
2x = 34
Divide both sides by two
x = 17
Since (5y + 35) and (6x + 3) are consecutive interior angles, they add up to 180. Plug in 17 for x.
(5y + 35) + (6(17) + 3) = 180
Add like terms
5y + 140 = 180
5y = 40
y = 8
Solve for the missing angles and side lengths A= 20 degrees, b=4 a = 4.5 Find the measure of C
a )18 degrees
b)142 degrees
c)160 degrees с
Answer:
Its 142
Step-by-step explanation:
Theres a website called triangle calculator and you put in three things wether its SSA or ASA or whatever and it gives you all the measurements. Good luck on your quizzes and tests :)
Amir needs to use how many ?
tablespoons of olive oil.
Answer:
Step-by-step explanation:
^^lol can u post the question wait a min i took this it’s 32 tablespoons
(Grade6math) Can somebody plz help answer all of these in simplify form (if u know how to) thanks so much :)
WILLL MARK BRAINLIEST
