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AleksandrR [38]
3 years ago
12

Hello :) how to do question 23 ?

Mathematics
1 answer:
Shalnov [3]3 years ago
4 0

suggestions math away or algebra calculator

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Suppose y = sqrt 2x+1, where x and y are functions of t.
frutty [35]

If y = √(2x + 1), then differentiating both sides implicitly with respect to t gives

dy/dt = 1/2 • 1/√(2x + 1) • 2 • dx/dt = 1/√(2x + 1) • dx/dt

(a) If dx/dt = 9 and x = 4, then

dy/dt = 1/√(2•4 + 1) • 9

dy/dt = 1/√(8 + 1) • 9

dy/dt = 1/√9 • 9

dy/dt = 9/3

dy/dt = 3

(b) If dy/dt = 3 and x = 40, then

3 = 1/√(2•40 + 1) • dx/dt

3 = 1/√(80 + 1) • dx/dt

3 = 1/√81 • dx/dt

3 = 1/9 • dx/dt

dx/dt = 27

5 0
2 years ago
Simplify the expression.
snow_tiger [21]
The answer to the question is d.
8 0
3 years ago
I really need help finding the solution!!
Mrac [35]

Answer:

-0.5 is not a solution

2 is a solution

Step-by-step explanation:

To check if something is a solution of the equation, you need to substitute the value in place of the variable

15 + 2y = -12 - 4y

15 + 2(-0.5) = -12 - 4(-0.5)

15 - 1 = -12 + 2

14 ≠ -10 ∴ -0.5 is not a solution

5 - 2(3x + 5) = 3 - 10x

5 - 2[3(2) + 5] = 3 - 10(2)

5 - 2(6 + 5) = 3 - 10(2)

5 - 12 - 10 = 3 - 120

-17 = -17 ∴ 2 is a solution

3 0
3 years ago
A basketball has a surface area of 1810 cm. find its volume<br>​
julia-pushkina [17]

Answer:

V≈7240.89

Step-by-step explanation:

Use the formula V=A^(3/2) / 6\sqrt[n]{pi}

8 0
3 years ago
Which is more precise measurement? A:18 inches B:18.55 C:17.5 D: 17.775
Andrej [43]
17.775 is the most precise since it has the most decimals. However, it may not be correct.
4 0
3 years ago
Read 2 more answers
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