Ask question

Ask question

All categories

3 years ago

7

The rectangular sandbox at the local community park has a width of 24.5 meters and its length is 31.7 meters. What is the perime

ter, in meters, of the rectangular sandbox?

1 answer:

eduard3 years ago

5 0

The answer is 112.4 because 24.5+24.5+31.7+31.7=112.4.

You might be interested in

Half of j minus 5 is the sum of k and 13

hoa [83]

$\dfrac{1}{2}j-5=k+13$

5 0

3 years ago

Plz help quick need for school rn

Setler [38]

Answer: 1/8

Step-by-step explanation: (:

7 0

3 years ago

Write the equation of a polynomial of degree 3, with zeros 1, 2 and -1 where f(0)=2

drek231 [11]

<u>Answer:</u>

The equation of a polynomial of degree 3, with zeros 1, 2 and -1 is $x^{3}-2 x^{2}-x+2=0$

<u>Solution:</u>

Given, the polynomial has degree 3 and roots as 1, 2, and -1. And f(0) = 2.

We have to find the equation of the above polynomial.

We know that, general equation of 3rd degree polynomial is

$F(x)=x^{3}-(a+b+c) x^{2}+(a b+b c+a c) x-a b c=0$

where a, b, c are roots of the polynomial.

Here in our problem, a = 1, b = 2, c = -1.

Substitute the above values in f(x)

$F(x)=x^{3}-(1+2+(-1)) x^{2}+(1 \times 2+2(-1)+1(-1)) x-1 \times 2 \times(-1)=0$

$\begin{array}{l}{\rightarrow x^{3}-(3-1) x^{2}+(2-2-1) x-(-2)=0} \\ {\rightarrow x^{3}-(2) x^{2}+(-1) x-(-2)=0} \\ {\rightarrow x^{3}-2 x^{2}-x+2=0}\end{array}$

So, the equation is $x^{3}-2 x^{2}-x+2=0$

Let us put x = 0 in f(x) to check whether our answer is correct or not.

$\mathrm{F}(0) \rightarrow 0^{3}-2(0)^{2}-0+2=2$

Hence, the equation of the polynomial is $x^{3}-2 x^{2}-x+2=0$

3 0

3 years ago

Amanda bought 5 bottles of Pepsi and two medium pizzas, The Pepsi cost $9.95 and the total bill was

Allushta [10]

Answer:

9.99

Step-by-step explanation:

5 bottles of Pepsi equals $9.95 subtract that from $29.93 than u divide that anser by so ur answer is 9.99

6 0

3 years ago

There are 30 musicians in the carter school marching band. How many of them play brass instruments

JulijaS [17]

There are 7 people who play brass

8 0

3 years ago

Read 2 more answers