What main artery would be affected by a high systolic blood pressure number?

The main artery that would be affected by a high systolic blood pressure number would be the aorta.

Explanation:

Systolic BP puts pressure on the arteries as the ventricoles contract and push blood out of the heart. The aorta is where the blood leaves the heart to oxygenate the blood throughout the body.

the  frequency of a wave represents  the number of wavelengths that pass a specific point per second. the unit for  frequency  is hertz (hz).

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b. the carbon cycle ensures living things have a source of hydrogen