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3 years ago

During a drought, a river's height decreases by 0.35 inch everyday. What is the change in the river's height after 7 days?

Mathematics

2 answers:

netineya [11]3 years ago

8 0

7*0.35= 2.45. The change is 2.45 inches.

melisa1 [442]3 years ago

4 0

0.35x7=2.45. The river's height decreases by 2.45 inches after 7 days

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Match the vocabulary word with the correct definition.

Semenov [28]

Answer:

1. trapezoid

A quadrilateral with at least one pair of parallel sides.

2. bases of a trapezoid

The parallel sides

3. legs of a trapezoid

The nonparallel sides.

4. median of a trapezoid

The segment connecting the midpoints of the legs.

5. isosceles trapezoid

A trapezoid with legs of the same length.

5 0

3 years ago

Read 2 more answers

Following one side of a rural road, the house numbers increase by eighteen. The house number of the first house on the road is 8

ad-work [718]

Answer:

Recursive:

$a_n=a_{(n-1)}+18\\ \\ a_1=82$

Explicit:

$a_n=64+18n$

Explanation:

1. Sequence:

$a_1=82\\ \\ a_2=82+18=100\\ \\ a_3=100+18=118\\ \\ a_4=118+18=136\\ \\ ...$

2. Recursive formula

The recursive formula permits to calculate the value of the nth term in the sequence using the (n-1)th term in the sequence.

$a_n=a_{(n-1)}+18\\ \\ a_1=82$

3. Explicit formula

The explicit formula permits to calculate any value of a term in the sequence:

$a_n=a_1+(n-1)d\\ \\ a_n=82+(n-1)18\\ \\ a_n=82+18n-18\\ \\ a_n=64+18n$

7 0

3 years ago

Solve 3x^2 - 20x - 7 =0

grin007 [14]

This involvea factoring the polynomial into binomials and solving.
So make it (3x+1)(x-7)
X equals 7 and -1/3

5 0

3 years ago

Read 2 more answers

Quick calculus question work doesn't have to be shown

Vinil7 [7]

$\bf \textit{volume of a sphere}\\\\
V=\cfrac{4\pi r^3}{3}\implies V=\cfrac{4\pi }{3}r^3
\\\\\\
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\begin{cases}
\frac{dr}{dt}=50\\
r=6
\end{cases}\implies \cfrac{dV}{dt}=\cfrac{4\pi }{3}\cdot 3(6)^2\cdot 50\\\\\\ \cfrac{dV}{dt}=\stackrel{\frac{cm^3}{s}}{7200\pi}$

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3 years ago

An event has a probability of 1/2. How would you best describe the likelihood of this event? (Hint: Change it to a decimal)

noname [10]

Answer:

Equally Likely

Step-by-step explanation:

The answer is equally likely because equally likely events have the same probability of happening as another event.

For example, a fair coin.

It has a 1/2 chance of beng tails, and 1/2 chance of being heads, meaning that both tails and heads are Equally Likely to land.

Hope this helps!

7 0

2 years ago