How to factor 27 - 9x + 15y

Answers

Answer 1

Answer: $27-9x+15y$

Factor out common term 3 :

$= 3(5y-3x+9)$

hope this helps!

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Numbers that equal 180

Answers

60 x 3 90 x 2 30 x 6 5 x 36 45 x 4 20 x 9 18 x 10 12 x 15

What two numbers multiply to get 120 and add or subtract to get negative 22?

Answers

The two numbers are -10 and -12
Bcause -10 × -12 = +120
And when subtracted-10 -12 = -22

Answer:

Step-by-step explanation:

If the 9th term of an A.P is 0, prove that its 29th term is twice its 19th term

Answers

Let the first term, common difference and number of terms of an AP are a, d and n respectively.

Given that, 9th term of an AP, T9 = 0 [∵ nth term of an AP, Tn = a + (n-1)d]

⇒ a + (9-1)d = 0

⇒ a + 8d = 0 ⇒ a = -8d ...(i)

Now, its 19th term , T19 = a + (19-1)d

= - 8d + 18d [from Eq.(i)]

= 10d ...(ii)

and its 29th term, T29 = a+(29-1)d

= -8d + 28d [from Eq.(i)]

= 20d = 2 × T19

Hence, its 29th term is twice its 19th term

Answer:

Proved below.

Step-by-step explanation:

a9 = a1 + 8d = 0 where a1 = first term and d = common difference.

we need to prove that

a1 + 28d = 2(a1 + 18d

simplifying:-

a1 + 36d - 28d = 0

a1 + 8d = 0 which is what we are given.

Therefore the proposition is true.

forty children from an after school club went to the matinee. this is 25% of the children at the club. how many children are in the club

Answers

Number of children from an after school that went to the martinee = 40
Percentage of children from an after school that went to the martinee = 25%
Let us assume the number of children in the club = x
Then
25% * x = 40
(25x/100) = 40
x/4 = 40
x = 40 * 4
= 160
So the total number of children in the club is 160. I hope the procedure is clear enough for you to understand. you can always use this method for solving similar problems without requiring any help from outside.

25% of 40 is 10. So there are still 30 kids in the club. :)

tamelas school day is 6 3/4 hours. She has seven classes that are 3/4 hour long. How many hours is Tamela not in class while she is at school

Answers

One hour And 30 minutes

Answer:

1 HOUR 30 MINS

Step-by-step explanation:

Some friends go to the store to buy school supplies. Noel spends $4.89. Holly spends 3 times as much as Noel. Kris spends $12.73 more than Holly. How much does Kris spend? please walk me through every single step i really need help thanks

Answers

4.89 times 3 =14.67 12.73 +14.67 =27.40
so kris spend 27.40 dollars

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A container holds a combination of nickels and quarters. There are 156 coins in all, and their total value is $21.60. The system of equations models this situation, where x is the number of nickels and y is the number of quarters.x+y=1560.05x+0.25y=21.6How many nickels and quarters are in the container? A.118 nickels and 38 quartersB.106 nickels and 50 quartersC.87 nickels and 69 quartersD.72 nickels and 84 quarters