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Ksju [112]
3 years ago
7

SOMEONE HELP FOR 15 POINTS

Mathematics
1 answer:
zheka24 [161]3 years ago
7 0

Answer:

Step-by-step explanation:

Hint:

a² - 9a + 15  = (a-7)(a-2)

a² + 9a + 15  = (a+7)(a+2)

a² + 3a - 10 = (a-2)(a+5)

a² + 5a - 14 = (a-2)(a+7)

a² - 5a - 14 = (a-7)(a+2)

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Last question (arc length and area) thanks!!!
Lynna [10]

Answer:

m\angle ABC=60\textdegree

Step-by-step explanation:

m\angle ABC=360-90-90-m\angle AOC\\=180-120\\=60\textdegree

7 0
2 years ago
X-3y=17<br> -6x+5y=-11<br> Solving systems by substitution
Nastasia [14]
X=-4, y=-7
Good luck!!!!

3 0
3 years ago
35% of salt is in feta cheese. What percentage of salt is in that 350 g cheese?
xxMikexx [17]

The amount of salt is in the 350 g of feta cheese, when there is 35% of salt is in cheese, is 122.5 grams.

<h3>What is percentage of a number?</h3>

Percentage of a number is the part of the whole number which is expressed in the fraction of hundredth. It is represented with "%" symbol.

35% of salt is in feta cheese. The percentage of salt is in that 350 g cheese has to be found out.

Let suppose there is x grams of slat in feta cheese of 350 g. Thus, the amount of salt (35% of 350) is,

x=\dfrac{35}{100}\times350\\x=122.5\rm\; gm

Thus, the amount of salt is in the 350 g of feta cheese, when there is 35% of salt is in cheese, is 122.5 grams.

Learn more about the percentage here;

brainly.com/question/2085058

#SPJ1

5 0
1 year ago
A. Find the mean median and mode of the data.
IrinaK [193]
26 26 29 30 31 33 33 33 34 34 70

A.
Mean:30.9
Add all numbers up and divide by however many there are.
Median:32
Number in the middle spot
Mode:33
Number that occurs the most

B.
Mean:34.45
Median:33
Mode:33
4 0
3 years ago
Can somebody help me please ​
vesna_86 [32]

9514 1404 393

Answer:

  • 3n+6 (n = smallest)
  • 3n (n = middle)

Step-by-step explanation:

The usual method for doing this is to let n represent the smallest one. Then the three integers are ...

  n, n+2, and n+4

and their sum is ...

  (n) +(n+2) +(n+4) = 3n+6 . . . . sum of 3 consecutive odd integers (n = smallest)

_____

Personally, for consecutive number problems, I prefer to let the variable represent the average value. If n is the average value of 3 consecutive odd integers, is is the middle integer. Of course, the sum will be 3 times the average:

  (n-2) +(n) +(n+2) = 3n . . . . sum of 3 consecutive odd integers (n = middle one)

4 0
3 years ago
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