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Vaselesa [24]
2 years ago
10

Item 1

Mathematics
1 answer:
drek231 [11]2 years ago
7 0

Answer:

an= 11 + (n - 1) x -1

a30= -18

Step-by-step explanation:

this is right, trust me

You might be interested in
1. 3x^2-7=31<br> 2. 2x^2+18=0<br> 3. 4x^2-26=-50<br> 4. 2x^2+36=x^2
yan [13]

The quadratic equations are solved and answered below -

<h3>What is a equation?</h3>

An equation is a mathematical statement showing the equivalence of two mathematical expressions. Example -

3x + 5 = 8

Given is -

3x² - 7 = 31

2x² + 18 = 0

4x² - 26 = - 50

2x² + 36 = x²

We have -

3x² - 7 = 31

3x² = 38

x² = 38/3

x² = 12.67

x = ±3.56

2x² + 18 = 0

2x² = - 18

x² = -9

x = ±3i

4x² - 26 = - 50

4x² = - 24

x² = -6

x = ±√6i

2x² + 36 = x²

x² = - 36

x = ±√6 i

Therefore, the quadratic equations are solved above.

To solve more questions on Rectangles and their Dimensions, visit the link below -

brainly.com/question/1041084

#SPJ1

4 0
1 year ago
Identify the domain and range of each function. y = 4^-5 + 3
faust18 [17]

Answer:

It’s C and B on eden

Step-by-step explanation:

I did it

7 0
3 years ago
Read 2 more answers
Please help asap and i will give brainliest to whoever is correct
DanielleElmas [232]

Answer:

first box 1.5, second box -1.5 don't forget the negative for the second box

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
In a box there are six envelopes each containing two cards. Three of the envelopes contain two red cards, two of them contain a
Sphinxa [80]

Answer:

\frac{2}{5}

Step-by-step explanation:

3 envelopes having 2 red card

2 envelopes having 1 red card and 1 black card

1 envelope having 2 black cards

We are given that . An envelope is selected at random and a card is withdrawn and found to be red.

So, No. of ways of envelope having red card = 3+2 = 5

No. of required ways of envelope having 1 red card and 1 black card = 2

So, probability of getting an envelope having 1 red card and 1 black card = \frac{2}{5}

Hence The chance the other card is black is \frac{2}{5}

5 0
2 years ago
Which expression represents a number that is 4 times as great as the quotient of 25 and 5? A. ( 25 × 5 ) × 4 B. 4 ÷ ( 25 × 5 ) C
oksano4ka [1.4K]

Answer:

It would be D.

4 0
3 years ago
Read 2 more answers
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