Answer:
the 3rd option
Step-by-step explanation:
the solution is where the lines intersect
Answer: She should have multiplied One-half (4) (3.5) by 5 squared.
Step-by-step explanation:
The calculation of Beth is wrong. Since Beth enlarged the triangle below by a scale of 5, she should find the area of the traingle and then multiply by 5².
This will be:
= 1/2 × 4 × 3.5 × 5²
= 2 × 3.5 × 25
= 175cm²
The answer is 347700 hope this helped
Answer:
Step-by-step explanation:
1). x² - 10x + a²
By using the formula of (a - b)² = a² - 2ab + b²
x² - 2(5)x + a²
Therefore, for a perfect square of the expression a should be equal to 5.
Therefore, (x² - 10x + 25) will be the answer.
2). x² + 2ax + 36
= x² + 2(a)x + 6²
For a perfect square of the given expression value of a should be 6.
x² + 2(a)x + 6² = x² + 2(6)x + 6²
= (x + 6)²
Therefore, x² + 12x + 36 will be the answer.
3). 

To make this expression a perfect square,
a² = 
= 
Therefore, the missing number will be
.
A multiple is a number that can be gotten from multiplying a number by any number. For example, a multiple of 3 would have to be something that you can count by threes to get to. The same applies to 10, if you count by tens, any of those numbers that you get while counting by tens would be a multiple of 10.