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elixir [45]
3 years ago
12

For what value of d would the statement 6d=30 be true? A.d=7 B. d=5 C. d=4 D.d=6

Mathematics
2 answers:
Zolol [24]3 years ago
5 0

Answer:

B.

Step-by-step explanation:

1.6d=30

2. Start with dividing each side by 6 since its the only number which will leave the variable d by itself and the other side of the equal sign with 5

3. Which will leave the answer with d=5

Elenna [48]3 years ago
3 0

\huge\text{Hey there!}

\large\text{For what value of d would the statement 6d = 30 be true?}

\large\textsf{A. d = 7}

\large\textsf{B. d = 5}

\large\textsf{C. d = 4}

\large\textsf{D. d = 6}

\mathsf{6x = 30}

\large\text{DIVIDE by 6 to BOTH SIDES}

\mathsf{\dfrac{6d}{6}=\dfrac{30}{6}}

\large\text{Cancel out: }\mathsf{\dfrac{6}{6}}\large\text{ because it gives you \text{1}}

\large\text{Keep: }\mathsf{\dfrac{30}{6}}\large\text{ because it helps us solve for \bf d}

\mathsf{\bold{d}=\dfrac{30}{6}}

\mathsf{d\rightarrow \dfrac{30}{6}=30\div6}

\large\text{Solve above and you will have your answer}\uparrow

\boxed{\boxed{\large\textsf{Answer: \huge Option C.  \bf d = 5}}}\huge\checkmark

\text{Good luck on your assignment and enjoy your day!}

~\frak{Amphitrite1040:)}

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Read 2 more answers
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Answer:

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Step-by-step explanation:

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= \pi (r+\triangle r)^2- \pi r^2

=\pi [r^2+2r\triangle r+(\triangle r)^2-r^2]

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Since (Δr)² is very small, So it is ignorable.

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We know,

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Total mass M=\sum_{i=1}^n \frac{80r_i\pi }{1+r^2}\triangle r_i

Therefore

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                      =40\pi[ln(1+r^2)]_0^5

                      =40\pi [ln(1+5^2)-ln(1+0^2)]

                     =40\pi ln(26)

                     = 409.59 kg (approx)

Therefore the mass of the of the oil is 409.59 kg.

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