Answer:
<u>Height = 3 inches and Base length = 7 inches</u>
Step-by-step explanation:
1. Information provided to answer the question correctly:
Base of the triangle = x+ 4
Height of the triangle = x
Area of the triangle = 10.5 inches²
2. Find the base length and height
Let's recall the formula of the area of a triangle:
Area = (Base * Height)/2
Replacing with the values we know:
10.5 = x (x + 4)/2
21 = x² + 4x
x² + 4x - 21 = 0
(x + 7) (x - 3) = 0
(x₁ + 7) = 0 ⇒ x₁ = -7
(x₂ - 3) = 0 ⇒ x₂ = 3
We take x₂ as the answer because x₁ = -7 is not a valid height.
<u>Height = 3 inches and Base length = 7 inches</u>
Answer:
20 Blocks
Step-by-step explanation:
6 Minutes 4 Blocks
----------------- = -------------------
30 Minutes 20 Blocks
Because 6 was multiplied by 5 to get 30 minutes in total then 4 blocks need to be multiplied by 5 as well.
To convert to scientific notation<span>, start by moving the decimal place in the number until you have a coefficient between.
</span>
Any number that you can write down on paper ... with digits, a fraction bar,
and a decimal point ... is a rational number.
If it uses only digits, then it's an integer. If it needs a fraction bar or a decimal
point, then it's NOT an integer. But if you can write the whole thing on paper,
without any other symbols or comments, then it's a rational number.
