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3 years ago

Solve this problem: X+7=12

Mathematics

1 answer:

BaLLatris [955]3 years ago

4 0

Answer:

x=5

Step-by-step explanation:

because 5+7=12

you can figure it out by doing 12-7=?

the answer is 5 and thats your x

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The quotient of a number and 2 is the same as the difference of the number doubled and 3. What is the number?

Yanka [14]

Hi,

x/2 = 2x - 3

x/2 - 2x = - 3

x = 3 /(3/2)

x = 3 * 2/3 = 2

The number is 2.

7 0

3 years ago

The number of employees for a certain company has been decreasing each year by 7%. If the company currently has 790 employees a

Vikki [24]

Answer:

The number of employees in 8 years is 442

Step-by-step explanation:

Given:

Decreasing rate = 7%

Current number of employees = 790

To Find:

The number of employees after 8 years is this same rate continues =?

Solution:

Let the number of employees after 8 years be x

The current number of employees is:

$790(1-0.07)^0=790$ ---------------------------------(1)

since the decrase rate is 7% we use 0.07

So after 8 years , eq (1) can be rewritten as

$790(1-0.07)^8= x$

$790(0.93)^8= x$

$790 \times 0.5595= x$

x= 442.005

x= 442 (approx)

6 0

3 years ago

In a certain Algebra 2 class of 30 students, 19 of them play basketball and 12 of them play baseball. There are 8 students who p

Alenkinab [10]

Answer:

Probability that a student chosen randomly from the class plays basketball or baseball is $\frac{23}{30}$ or 0.76

Step-by-step explanation:

Given:

Total number of students in the class = 30

Number of students who plays basket ball = 19

Number of students who plays base ball = 12

Number of students who plays base both the games = 8

To find:

Probability that a student chosen randomly from the class plays basketball or baseball=?

Solution:

$P(A \cup B)=P(A)+P(B)-P(A \cap B)$ ---------------(1)

where

P(A) = Probability of choosing a student playing basket ball

P(B) = Probability of choosing a student playing base ball

P(A \cap B) = Probability of choosing a student playing both the games

Finding P(A)

P(A) = $\frac{\text { Number of students playing basket ball }}{\text{Total number of students}}$

P(A) = $\frac{19}{30}$ --------------------------(2)

Finding P(B)

P(B) = $\frac{\text { Number of students playing baseball }}{\text{Total number of students}}$

P(B) = $\frac{12}{30}$ ---------------------------(3)

Finding $P(A \cap B)$

P(A) = $\frac{\text { Number of students playing both games }}{\text{Total number of students}}$

P(A) = $\frac{8}{30}$ -----------------------------(4)

Now substituting (2), (3) , (4) in (1), we get

$P(A \cup B)= \frac{19}{30} + \frac{12}{30} -\frac{8}{30}$

$P(A \cup B)= \frac{31}{30} -\frac{8}{30}$

$P(A \cup B)= \frac{23}{30}$

7 0

3 years ago

Simplify (2n + 5) - (3n + 7) + (4n - 9). -3n - 11 3n - 11 -3n + 11 3n + 11

KATRIN_1 [288]

2n + 5 – (3n + 7) + 4n – 9
 6n + 5 – (3n + 7) – 9
 6n – 4 – (3n + 7)
6n – 4 – 3n – 7
 3n – 4 – 7
 3n –11

6 0

3 years ago

Given that a geometric sequence can be expressed as a non-linear function in the form f(x) = abx, write a non-linear function to

guajiro [1.7K]

$f(x) = 3 \times {2}^{x}$

3 0

3 years ago

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