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3 years ago

12

Use the rules of equations and inverse operations to solve the equation 3x^2=;8

1 answer:

PtichkaEL [24]3 years ago

4 0

8-2 and then 3 divided by 6 which will give you 0.5 so x=0.5

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Let r(t)=⟨t2,1−t,4t⟩. calculate the derivative of r(t)⋅a(t) at t=5, assuming that a(5)=⟨−4,4,−5⟩ and a′(5)=⟨−5,9,3⟩

erastovalidia [21]

$\mathbf r(t)=\langle t^2,1-t,4t\rangle$
$\implies\mathbf r'(t)=\langle 2t,-1,4\rangle$

$\dfrac{\mathrm d(\mathbf r(t)\cdot\mathbf a(t))}{\mathrm dt}\bigg|_{t=5}=\mathbf r'(5)\cdot\mathbf a(5)+\mathbf r(5)\cdot\mathbf a'(5)$
$=\langle10,-1,4\rangle\cdot\langle-4,4,-5\rangle+\langle25,-4,20\rangle\cdot\langle-5,9,3\rangle$
$=(-40-4-20)+(-125-36+60)$
$=-165$

6 0

3 years ago

What is the slope of a line parallel to the line whose equation is x-y=-3?

lapo4ka [179]

Answer:

1

Step-by-step explanation:

slope must be same because it is paralel

6 0

3 years ago

Which of these is NOT a terminating decimal?<br> A) 1.88<br> B) 1.875 <br> C) 0.88<br> D) 0.8

slamgirl [31]

Answer:

D

Step-by-step explanation:

8 0

2 years ago

I need step by step explanation for this!

damaskus [11]

Answer:

61

Step-by-step explanation:

13 - 1 = 12
12 ÷ 2 = 6
Put 6 and 1 together: 61

Therefore, the number is 61

Let's check:

6 × 2 = 12
12 + 1 = 13

The sum of the two digits is 13, and we got that, so we are correct. The number is 61.

5 0

3 years ago

Read 2 more answers

Hazel has 1 3\4 cups of rice. It takes 1 \8cup of rice to make one cup of chicken and rice soup. How many cups of chicken and ri

sleet_krkn [62]

Answer: 3 1/8
Explanation: you do 13/4 - 1/8= 3 1/9

7 0

2 years ago

Read 2 more answers