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mezya [45]
2 years ago
11

Which of the following polynomial is a quadratic polynomial: (i)x²-7x+2 (ii) 7x²-x(x+2) (iii) 2x (x+5)+1 (iv) 2x-1​

Mathematics
1 answer:
SSSSS [86.1K]2 years ago
8 0

Answer:

(iii)2x (x+5)+1 I guessss.....

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Unit rate feet per second 180 miles over 2 hours
Tatiana [17]
So that is equal to 180 miles per 2 hours which is 90 miles per hour if each hour has the same m/hr rate.
You can set up a proportion:
let x = number of miles per hour
\frac{x}{180} = \frac{1}{2}
cross multiply and you get
2x=180
divide both sides by 2 and you get
x=90
so you get the same answer both ways,
90 miles per hour
5 0
3 years ago
A polynomial has been factored, as shown below: f(x) = (x − 6)(x + 5)(x − 9) What are the zeros of the polynomial? (5 points)
soldi70 [24.7K]

<span>x=6</span>, <span>x=−5</span> or <span>x=9</span>

Explanation:

<span><span>f<span>(x)</span></span>=<span>(x−6)</span><span>(x+5)</span><span>(x−9)</span></span>

If all of the linear factors are non-zero, then so is their product <span>f<span>(x)</span></span>.

If any of the linear factors is zero, then so is their product <span>f<span>(x)</span></span>.

5 0
3 years ago
Alexandra buys sweatshirts for $12 each. In her store, she sells each sweatshirt for $30.
serious [3.7K]
Multiply $30 by .25 you get, it's $7.50so you subtract $7.50 from $30 and you get $22.50. Then multiply 2 (sweaters) by $22.50 and you get $45,but wait you still have to multiply that sales tax so you multiply .04 by $45 and you get $1.80, later you subtract $1.80 from $45 and you get $43.20(the cost of the two sweaters) I did part1 only cuz' no I have no time left Sorry for the inconvenience
7 0
3 years ago
Read 2 more answers
A holiday costs £1900. Work out the<br> price after a 9% discount.
Svetradugi [14.3K]

Answer:

$1729

Step-by-step explanation:

\frac{100-9}{100}  * 1900

7 0
3 years ago
Read 2 more answers
24) You want to save $500 for a school trip. You begin by saving a penny on the first day. You plan to save an additional penny
Anvisha [2.4K]

Answer:

Well, one penny adds up quickly. In a year, you can save nearly £700 by putting just 1p away in day one, 2p in day two….you get the idea. For a normal (365 day) year you can save £667.95, and in a leap year you can save £671.61.

Step-by-step explanation:

3 0
3 years ago
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