Answer:
Explanation:
Use the graph to find the factorization of x2 - 7x+12.
A. (x-6)(x-8)
B. (x - 3)(x - 4)
C. (x+3)(x + 4)
OD+
D. (x + 6) (x+8)
Answer:
b. It is recommended to go long periods of time without eating to loose weight.
Explanation:
Spending long periods of time without eating is not the right thing to do when you want to lose weight. Spending too much time fasting does not guarantee weight loss, and causes serious illnesses that threaten, among other things, the heart.
A recent survey by nutritionist Roberta Cassani of the Institute of Nutrition in Itu, São Paulo state, shows that the greater the number of hours without putting anything in the mouth, does not help anyone lose weight, on the contrary, fasting causes the increase of the circumference of the abdomen.
According to the scientist, the main reason that prolonged fasting is an enemy of the waist is that the meal set up after this period of scarcity is usually an example of caloric and nutritional imbalance - in the research, fasting usually occurred in the afternoon. “When they have access to food, the greedy individual does not make healthy choices,” explains the expert. Being deprived of energy, the body triggers a whole mechanism that favors the binge eating, the result is that the individual gets fat.
Cindy collects 4 cicadas in total.
Let,
D represent the number of dragonflies
C represent the number of cicadas
S represent the number of spiders
Since the total number of insects is 20:
Equation 1
D+C+S=20
A spider has 8 legs, a dragonfly has 6 legs, and a cicada has 6 legs. Since the total number of legs is 138:
Equation 2
6D+6C+8S=138
A spider has 0 wings, a dragonfly has 4 wings, and a cicada has 2 wings. Since the total number of wings is 36:
Equation 3
4D+2C+0S=36
Multiplying equation 1 with 6 and subtracting it from equation 2:
6D+6C+8S-6(D+C+S)=138-6(20)
2S=18
S=9
Multiplying equation 1 with 4 and subtracting it from equation 3:
4D+2C+0S-4(D+C+S)=36-4(20)
-2C-4S=-44
Substituting S with 9:
-2C-4(9)=-44
-2C=-8
C=4
Thus, Cindy collects 4 cicadas in total.
Learn more about insects here:
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Volcanologists can predict eruptions—if they have a thorough understanding of a volcano's eruptive history, if they can install the proper instrumentation on a volcano well in advance of an eruption, and if they can continuously monitor and adequately interpret data coming from that equipment.
Answers:
A(n) operon is a stretch of DNA consisting of an operator, a promoter, and genes for a related set of proteins, usually making up an entire metabolic pathway.
The Gene of an operon is arranged sequentially after the promoter
A(n) promoter is a specific nucleotide sequence in DNA that binds RNA polymerase, positioning it to start transcribing RNA at the appropriate place.
A(n) regulatory gene codes for a protein, such as a repressor, that controls the transcription of another gene or group of genes.
Regulatory proteins bind to the operator to control expression of the operon.
A(n) repressor is a protein that inhibits gene transcription. In prokaryotes, this protein binds to the DNA in or near the promoter.
A(n) inducer is a specific small molecule that binds to a bacterial regulatory protein and changes its shape so that it cannot bind to an operator, thus switching an operon on.