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SVETLANKA909090 [29]
4 years ago
8

Simplify each expression by combining like terms.

Mathematics
1 answer:
mash [69]4 years ago
8 0

The simplification of – 65x + 4.2y + 65x – 2.2y + 5.4 + y – 3y is 5.4

<u>Solution:</u>

Given, expression is – 65x + 4.2y + 65x – 2.2y + 5.4 + y – 3y

We have to solve the above given expression by combining the like terms.

Then, – 65x + 4.2y + 65x – 2.2y + 5.4 + y – 3y

Combining the like terms in above expression we get,

⇒ ( - 65x + 65x ) + ( 4.2y – 2.2y + y – 3y ) + 5.4  

⇒ ( 0 ) + ( 2.0y + ( - 2y ) ) + 5.4

⇒ 0 + (2y – 2y) + 5.4

⇒ 0 + 5.4  = 5.4

Hence, the value of the given expression is 5.4

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ABCD is a quadrilateral.
GrogVix [38]

Answer:

AC and BD are vertically oposite

and both sides are equal (equilateral) so AC = BD

As i think

4 0
3 years ago
Simplify (4−b)(5b2+5b−4)
astraxan [27]

Answer:15b^2-5b^3+24b-16

Step-by-step explanation:

(4-b)(5b^2+5b-4)

Open the brackets

20b^2+20b-16-5b^3-5b^2+4b

Collect like terms

20b^2-5b^2-5b^3+20b+4b-16

15b^2-5b^3+24b-16

4 0
3 years ago
Need to pass this class!
alexandr1967 [171]
4w+5+33=90
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6 0
3 years ago
P(A) = 20%. P(B) = 50%. P(BIA) = P(B). What is P(A and B)?
8_murik_8 [283]

Answer:

P(A and B) = 0.1 = 10%

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question, we have that:

P(A) = 0.2, P(B|A) = 0.5

What is P(A and B)?

P(B|A) = \frac{P(A \cap B)}{P(A)}

P(A \cap B) = P(B|A)*P(A) = 0.5*0.2 = 0.1

P(A and B) = 0.1 = 10%

8 0
3 years ago
A function passes through the points (2,9) and (7,34). What are its rate of change and initial value?
Bess [88]

Answer:

The rate of change: 1/5

Initial value: (0,-1)

Step-by-step explanation:

The rate of change is easily 5/25, we just have to simplify it to 1/5.

To get the intial value, just subtract (2,9) by the rate of change twice.

5 0
3 years ago
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