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NikAS [45]
2 years ago
9

How to make an equation for unit rate

Mathematics
1 answer:
cricket20 [7]2 years ago
6 0
Rate= distance / time
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If 4 T-shirts cost $15, how much will 12 T-shirts cost?
tatuchka [14]

Answer: $45

Step-by-step explanation:

15/4 = 3.75

Each shirt costs $3.75

3.75 * 12 = 45

6 0
3 years ago
Read 2 more answers
Replace ? with an expression that will make the equation valid.
AlexFokin [52]

Answer:

4x³

Step-by-step explanation:

d/dx ln(x⁴ + 7) = 1/(x⁴ + 7) × _?

To obtain the missing expression, let us simplify d/dx ln(x⁴ + 7). This can be obtained as follow:

Let y = ln (x⁴ + 7)

Let u = (x⁴ + 7)

Therefore,

ln(x⁴ + 7) = ln u

Thus,

y = ln u

dy/du = 1/u

Next, we shall determine du/dx. This is illustrated below:

u = (x⁴ + 7)

du/dx = 4x³

Finally, we shall determine dy/dx of ln (x⁴ + 7) as follow:

dy/dx = dy/du × du/dx

dy/du = 1/u

du/dx = 4x³

dy/dx = 1/u × 4x³

But:

u = (x⁴ + 7)

Therefore,

dy/dx = 1/(x⁴ + 7) × 4x³

Thus, the missing expression is 4x³

6 0
3 years ago
(0,6) (-4,-9)
Olegator [25]

Answer:

d=√(16+225)

d=√241

d=15.5

I would appreciate if my answer is chosen as a brainliest answer

6 0
2 years ago
Simply the expression square root of 54
amm1812

6 is the quare root of 54

Step-by-step explanation:

because if u 6x9 you get 54

3 0
3 years ago
Please I need help. I can’t figure these problems out.
Sladkaya [172]

base times length times height

8 0
3 years ago
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