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Annette [7]
3 years ago
12

What is the substitution for 3x+4y^2 if x= -2 and y=3?

Mathematics
1 answer:
Hitman42 [59]3 years ago
8 0

Answer:

30

Step-by-step explanation:

x= -2 and y= 3

Hence, simply put it in the equation:

3x + 4y^2

3(-2) + 4(3)^2

-6 + 4(9)

-6 + 36

30

Hope this helps!

If you find this helpful, please mark brainliest! Would really appreciate!

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15. Solve the compound inequality.<br> 5x - 11 &lt; -11 or 4x + 2 &gt; 14
s2008m [1.1K]

Answer:

Step-by-step explanation:

5x −11+11<-11+11

5x<0

5x/5<0/5

x<0

4x+2 -2 >14 -2

4x>12

4x/4>12/4

x>3

there both open not closed

hope this helps

5 0
3 years ago
About 16% of the population of a large country is hopelessly romantic. If two people are randomly selected, what is the probabil
kati45 [8]

Answer:

Here, 16 % of the total population of a large country is hopelessly romantic.

.

Assuming events are independent,

Probability of a person who is hopelessly romantic = 16% = 16/100

(a) Probability of both will be hopelessly

romantic =

\frac{16}{100}  \times  \frac{16}{100}

\frac{256}{10000}

= 0.0256...ans

Probability that are not hopelessly

romantic = 100% - 16%= 84%

\frac{84}{100}  \times  \frac{84}{100}

\frac{7056}{10000}

= 0.7056

(b) So, the probability of atleast one is hopelessly romantic = 1 - 0.7056

= 0.2944...ans

.

Hope it helps!

8 0
3 years ago
Sandra saves 12% of her salary for retirement. This year her salary was $3000 more than in the previous year, and she saved $420
Jet001 [13]

The previous year's salary is x.

This year's salary is x + 3000.

12% of this year's salary is $4200.

12% * (x + 3000) = 4200

0.12(x + 3000) = 4200

x + 3000 = 35,000

x = 32,000

Answer: Her salary in the previous year was $32,000.

3 0
3 years ago
A law firm offers a prepaid family plan that covers all of a family's legal services for as long as the family is enrolled
Step2247 [10]

Answer:

The extra monthly charge for the family would be $14.50

Step-by-step explanation:

let x equal the additional monthly charge for legal services

10 + (25 + x)12 = 484 \\ 10 + 300 + 12x = 484 \\ 310 + 12x = 484 \\ 12x = 174 \\ x = 14.50

8 0
2 years ago
A mesuré of_____ for a numerical data set summerizes all of its values with a single number????
hammer [34]

Answer:

Center

Step-by-step explanation:

A numerical data can be defined as a data set that is expressed in numbers only or a data set consisting of numbers rather than words. A numerical data is also known as a quantitative data.

Basically, numerical data are classified into two (2) main categories and these are;

1. Discrete data: a discrete data is a data set in which the number of possible values are either finite or countable. For instance, the value of a fair die, number of sweets in a jar, number of eggs in a crate etc.

2. Continuous data: a continuous data is a data set having infinitely many possible values and those values cannot be counted, meaning they are uncountable. Any quantity such as height, volume, weight, density, length, pressure, temperature, speed, distance, time are generally a continuous data.

A measure of center for a numerical data set summerizes all of its values with a single number.

On the other hand, a measure of variation gives a description of how the values of a numerical data varies with a single number.

4 0
2 years ago
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