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3 years ago

What is the value of x in this equation? 5x + 12 = -18

Mathematics

2 answers:

adell [148]3 years ago

7 0

Answer:

x = -6

Explanation:

First we collect like terms

5x = -18 - 12

5x = -30

( because when both signs are the same we add them)

Then we decide both sides by five so that only x will remain

5x / 5 = -30 / 5

x = -6

Thus, the value of x is -6

siniylev [52]3 years ago

4 0

Answer:

x = −6

Step-by-step explanation:

I like to start off by simplifying the equation! Then, I use inverse operations to narrow it down until I reach the answer!

5x + 12= −18

5x + 12 − 12= −18 − 12

5x = −30

5x/5 = -30/5

x = -6

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3 years ago

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2 years ago

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Step-by-step explanation:

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2 years ago

Assume that a population of 50 individuals has the following numbers of genotypes for a gene with two alleles, B and b: BB = 30,

Andreas93 [3]

Answer:

the frequency of allele B is 0.7 and allele b is 0.3 in population’s gene pool.

Step-by-step explanation:

Allele frequency is how often an allele occurs in a gene pool relative to the other alleles for that gene

Genotype No. of Individuals No. of Allele B No. of Allele b

BB 30 30*2 =60 30*0 =0

Bb 10 10*1 =10 10*1=10

bb 10 10 *0 =0 10*2=20

Total 50 70 30

Total no. of alleles = 70+30 =100

The frequency of allele B : $\frac{\text{number of B alleles}}{\text{total number of alleles}}$

: $\frac{70}{100}$

: $0.7$

The frequency of allele b : $\frac{\text{number of b alleles}}{\text{total number of alleles}}$

: $\frac{30}{100}$

: $0.3$

Hence the frequency of allele B is 0.7 and allele b is 0.3 in population’s gene pool.

6 0

3 years ago