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Deffense [45]
3 years ago
14

X - (2x + 1) = 8 - (3x + 3) Ayuda porfa

Mathematics
1 answer:
Marina86 [1]3 years ago
4 0

Answer:

x = 3

Step-by-step explanation:

cambia los signos : x - 2x-1=8-3x-3

like terms : -x-1=5-3x

variable: -x+3x=5+1 --> 2x=6

dividir: x=3

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Do integers have to be a set of positive and negative numbers?
AVprozaik [17]
Integers are whole numbers that range from negative infinity to positive infinity
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3 years ago
Solve each equation.<br> 1.) 7x=8x+12<br> 2.) 34-2x=7x<br> 3.) -x=7x-56
Elza [17]

Answer:

1: -12

2: 3 7/9

3: 7

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Saylor Henshaw earned $120 in simple interest in 9 months at an annual interest rate of 5%. How much money did he invest?
Ksju [112]
Annual interest is P*r^t, r is 0.05 here, t is 9/12=3/4=0.75
P*0.05^0.75=120
use your calculaor: P= 120÷ (0.05)^0.75=1135
so he invested about 1135 dollars
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</span> </span> </span></span>
3 0
3 years ago
6. You are planning a trip. You can go to Phoenix, Las Vegas, San Diego, or Los Angeles. You can
nadya68 [22]

Answer:

There are 24 different trip possibilities.

Step-by-step explanation:

Here the first thing we need to find is all the individual events, such that each event (or selection) will have a given number of options.

The first event is the selection of the location.

Here the options are: Phoenix, Las Vegas, San Diego, or Los Angeles (4 options)

The second event is the selection of how you go there.

The options are flying or driving (2 options)

The third event is the selection of how many days you will stay there. The options are 3 days, 4 days, and 5 days (3 options).

The total number of different trip possibilities is equal to the product between the number of options for each event.

P = 4*2*3 = 24

There are 24 different trip possibilities.

6 0
3 years ago
Assume that blood pressure readings are normally distributed with a mean of 123 and a standard deviation of 9.6. If 144 people a
Vanyuwa [196]

Answer:

The probability is 0.9938

Step-by-step explanation:

In this question, we are asked to calculate the probability that the mean blood pressure readings of a group of people is less than a certain reading.

To calculate this, we use the z score.

Mathematically;

z = (mean - value)/(standard deviation/√N)

From the question, we can identify that the mean is 125, the value is 123 , the standard deviation is 9.6 and N ( total population is 144)

Let’s plug these values;

z = (125-123)/(9.6/√144) = 2.5

Now we proceed to calculate the probability with a s score less than 2.5 using statistical tables

P(z<2.5) = 0.9938

8 0
3 years ago
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