The ratio of the number of girls in the sixth grade to the number of boys is 7:3. There are a total of 450 girls and boys in the sixth grade. How many boys are in the sixth grade?

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

Consider the expression below. 9 + 4(x + 2) – 3.1 select the term that best describes "3" in the given expression. o a. coefficient variable exponent constant

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5