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Elina [12.6K]
3 years ago
13

Write a quadratic polynomial, sum and product of whose zeroes are -4 and -21 respectively.

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
6 0

Answer:

x^2 -4x -21

Step-by-step explanation:

Here, we want to write a quadratic polynomial

We have the sum as -4

Let us have x as the variable

so the sum of the variables is -4x

while the product is -21 x^2

Two factors of 21 that can work here is -7x and 3x

So we have

x^2 - 7x + 3x -21

= x^2 -4x -21

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dalvyx [7]
The exact surface area is 150.8 and the exact volume is 141.37.

To answer this I used the formula for surface are for a right cylinder which is. 2•3.14•r•h+2•3.14•r^2 (^2 means to the power of 2) r=radius and h=height. When you replace the r’s and the h’s with the radius and height it’ll look like this. 2•3.14•3•5+2•3.14•3^2. For the power of 2 (^2) we basically just do 3•3. But when you put that into a calculator it gives you 150.8.

To find the volume use the formula 3.14•r^2•h when you replace the r’s and the h’s with the height and the radius it’ll look like this. 3.14•3^2•5. When put into the calculator it gives you 141.37.
7 0
3 years ago
Blank hundreds is the same as 4 thousand
Zinaida [17]
40 hundreds = 4 thousand
5 0
1 year ago
Emily buys a cage and two bowls for $54. The cage cost 40$. Each bowl cost the same amount. What is the price of one bowl? Expla
Taya2010 [7]

Answer:

$7

Step-by-step explanation:

a) First let's organize the information:

    The cage cost $40

    two bowls cost the same

    the total was $54

b) Put it as an equation

    40+x+x= 54

c) we will subtract 54-40 and get 14

d) divide 14 by 2 and get 7 for the cost of each bowl.

Hope you understand it ;)

5 0
3 years ago
So,i have the answer to this question,but i have no clue how to work it out,ik im not that smart but anyways i need helppo
mestny [16]

Answer:

1290 =  \frac{h}{10}  + \frac{h}{5} \\ 12900 = h + 2h \\ 3h = 12900 \\ h = 4300

7 0
3 years ago
3х – 8y = — 16<br> =<br> M<br> So yeah I kinda need help
marishachu [46]

Answer:

3x-8y-16  = 0

Step-by-step explanation:

8 0
2 years ago
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