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3 years ago

What side lengths should be used to model a rectangle with an area of x2 + 3x – 10 square units?

2 answers:

7 0

( x + 5 ) and ( x – 2 )

You can factor the above binomial and solve for zero. You'll have x^2 + 5x – 2x – 10, which simplifies to your original x^2 + 3x – 10

irina [24]3 years ago

5 0

your answer on e2020 would be B

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a flagpole casts a shadow 160 feet long. At the same time, a boy standing nearby who is 5 feet tall casts a shadow 20 feet long.

Veronika [31]

Answer:

The flagpole is 40 feet tall.

Step-by-step explanation:

So, we are looking for the height of the flagpole. Let h represent this height.

Boy - 5 feet in height and casts a 20-foot shadow

Flag pole - h feet in height and casts a 160-foot shadow

The relationship looks something like this:

5 : 20 :: h : 160

$\frac{5}{20} =\frac{h}{160}$

Now, we can cross multiply to find h!

$20h=800\\h=40$

So, the flagpole is 40 feet tall

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Have a nice day, fam. Spread The Love!

3 0

3 years ago

Read 2 more answers

Here you go the problems are on the word document

vredina [299]

2. absolute value, expression, integer.
3. This is what you have learned.
4.
A. Row 6 is
48 50 52 54 56 58
58-48=10
At the end of each row you add 5 to get the first number to the next row and then add to till you reach the end of the row.
B. an=a×rⁿ⁻¹
C. 143 last number is 163
D. The second picture is this one

I hope this helps!!!!!!

5 0

4 years ago

For the function given below, find a formula for the Riemann sum obtained by dividing the interval (0, 3) into n equal subinterv

Viktor [21]

Splitting up [0, 3] into $n$ equally-spaced subintervals of length $\Delta x=\frac{3-0}n = \frac3n$ gives the partition

$\left[0, \dfrac3n\right] \cup \left[\dfrac3n, \dfrac6n\right] \cup \left[\dfrac6n, \dfrac9n\right] \cup \cdots \cup \left[\dfrac{3(n-1)}n, 3\right]$

where the right endpoint of the $i$ -th subinterval is given by the sequence

$r_i = \dfrac{3i}n$

for $i\in\{1,2,3,\ldots,n\}$ .

Then the definite integral is given by the infinite Riemann sum

$\displaystyle \int_0^3 2x^2 \, dx = \lim_{n\to\infty} \sum_{i=1}^n 2{r_i}^2 \Delta x \\\\ ~~~~~~~~ = \lim_{n\to\infty} \frac6n \sum_{i=1}^n \left(\frac{3i}n\right)^2 \\\\ ~~~~~~~~ = \lim_{n\to\infty} \frac{54}{n^3} \sum_{i=1}^n i^2 \\\\ ~~~~~~~~ = \lim_{n\to\infty} \frac{54}{n^3}\cdot\frac{n(n+1)(2n+1)}6 = \boxed{18}$

8 0

2 years ago

How to solve the distributive property to express 27+60

Verizon [17]

(27)+(60)
is the anwser

5 0

3 years ago

4. Althea owed $451.26 on her credit card.

Serjik [45]

The answer is either 1,352.39 or 340.13

5 0

3 years ago