Answer:
x = 5
Step-by-step explanation:
9/15 = 3/x
x = 5
Answer:
21
Step-by-step explanation:
2^2+b^2=5^2
4+b^2=25
b^2=21
<3
Red
Answer:139 cm squared
Step-by-step explanation:
First separate it:
10x3
7x7
4x15
These are the 3 rectangles that make up this shape
Then multiply
10x3=30
7x7=49
4x15=60
Then add your answers
30+49+60=139cm squared
Answer:
k=7
Step-by-step explanation:
first, plug in the given values
2x+3y=k --> 2(2)+3(1)=k
-->4+3=k
-->7=k
k=7