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Gnom [1K]
2 years ago
13

MATH.QUESTION.HELP. BRAINILEST WILL BE GIVEN!!!

Mathematics
2 answers:
NikAS [45]2 years ago
6 0

Step-by-step explanation:

u r Correct so no need my answer .....

dedylja [7]2 years ago
3 0

Answer:

C.    2 \dfrac{1}{3}

Step-by-step explanation:

\dfrac{1}{3} \cdot 7 = \dfrac{1}{3} \cdot \dfrac{7}{1} = \dfrac{7}{3} = 2 \dfrac{1}{3}

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Let y′′′−9y′′+20y′=0. find all values of r such that y=erx satisfies the differential equation. if there is more than one correc
DerKrebs [107]

we are given

differential equation as

y'''-9y''+20y'=0

we are given

y=e^{rx}

Firstly, we will find y' , y'' and y'''

those are first , second and third derivative

First derivative is

y'=re^{rx}

Second derivative is

y''=r*re^{rx}

y''=r^2e^{rx}

Third derivative is

y'''=r^2*re^{rx}

y'''=r^3e^{rx}

now, we can plug these values into differential equation

and we get

r^3 e^{rx}-9r^2 e^{rx}+20re^{rx}=0

now, we can factor out common terms

e^{rx}(r^3 -9r^2 +20r)=0

we can move that term on right side

(r^3 -9r^2 +20r)=0

now, we can factor out

r(r^2 -9r +20)=0

r(r-5)(r-4)=0

now, we can set them equal

r=0

r-5=0

r=5

r-4=0

r=4

so, we will get

r=0,4,5...............Answer

4 0
3 years ago
What is 6300kg in grams
vaieri [72.5K]

Answer:

6,300kg=6,300,000grams

multiply 6,300 and 1,000 to get 6,300,000

4 0
3 years ago
For all parts of this question, use the function y + 2 = 3(x + 4)
vekshin1

i would start by simplifying the equation to get y by itself, you don't need to do this, but it makes it a little easier

y + 2 = 3 ( x + 4) distribute the 3 through the parenthesis

y + 2 = 3x + 12. subtract 2 from both sides

y = 3x +10

now to fill in the chart simply plug in the value of x to see what value of y it produces

y = 3(-2) +10

y = -6+10

y = 4

(-2,4)

y = 3(0) + 10

y = 0 + 10

y = 10

(0,10)

y = 3(2)+10

y = 6 + 10

y = 16

(2,16)

y = 3(4) + 10

y = 12 + 10

y = 22

(4,22)

8 0
2 years ago
Find the markup on a pair of jeans if the cost is $15.40, and the markup is 60% of the selling price.
tankabanditka [31]

Divide $15.40 and 60% (15.40/0.6)

And you should get &25.67.

The answer is $25.67

5 0
2 years ago
What is the slope of the cone
dimaraw [331]
I believe it’s 2 because rise/run and 14/7 = 2
5 0
3 years ago
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