Answer:
23
Explanation:
23 countries there are 23 countries in the North American continent.
Answer:
Crayon.
Explanation:
A crayon is known to be a kind of stick like pencil, but made of called wax, and it is useful for painting.
It is known that that the first crayon which looks like the modern crayon was made in Europe. And it was initially or originally made then out of the mixture of charcoal and oil. But now, the charcoal has since been replaced by various pigment and the oil been replaced by wax. This because the wax provides a better and stronger writing stick and it is easier to work with.
It should be noted, that crayon is used for writing and drawing, and its invention can be dated back to 18th century.
That are capable of interbreeding under natural conditions to produce viable and fertile offspring Aka
Hello. You did not present the experiment to which this question refers, which makes it impossible for it to be answered. However, I will try to help you in the best possible way.
It is likely that the amount of water presented in the question above is a variable in the experiment. This allows us to consider that if the experiment were carried out with different amounts of water, this experiment would provide inaccurate data and the results would not be considered true, making it impossible for a precise conclusion to be revealed.
This would happen because an experiment must distribute the variables, in all treatments, with the same amount and intensity. Therefore, to promote accurate data, the experiment must use an equal amount of water in all treatments.
Answer:
to the nearest degree = 77°
Explanation:
This is a question under trigonometry
from the question we can find that The building is 210 feet tall and the length of its shadow is 50 feet.
The relationship between opposite and adjacent of the triangle is tan
Therefore tanθ = 
θ = tan⁻¹ 0.2380
= 13.39°
then we have to calculate the measure of the angle between the end of the shadow and the vertical side of the building , which is equal to
90 - 13.39=
=76.61°
to the nearest degree = 77°
