Let
x = loaves of bread
y = batches of muffins
You must make a system of two equations with two unknowns that describe the problem
3.5x + 2.5y = 17 --- (1)
0.75x + 0.75y = 4.5 --- (2)
Resolving we have
x = 6-y (from (2))
replacing in (1)
3.5 (6-y) + 2.5y = 17
21 - 3.5y + 2.5y = 17
y = 21-17 = 4
Then substituting in (2)
x = 6-y = 6-4 = 2
Answer
Helena could bake:
2 loaves of bread
4 batches of muffins
Answer:
Step-by-step explanation:
When rotating a point 90 degrees counterclockwise about the origin our point A(x,y) becomes A'(-y,x). In other words, switch x and y and make y negative.
Answer:
Circumference: 220
Area: 3847
I think
Step-by-step explanation:
Answer:
Use quadratic formula
Step-by-step explanation:
(x - 17) (7x + 5)
7x^2 + 5x - 119x - 85
7x^2 - 114x - 85 = 0
The value of x can then be worked out using the quadratic formula where you substitute all the numbers in your calculator.
Answer:
Step-by-step explanation:
Two possible patters of sitting:
⇒
⇒
⇒ Three ways can be used to seat each set of three people, for a total of six.
⇒ There are two groups
2 × 3 = 6 (ways in six groups.)
*The two options can be distributed in two groups.
⇒ Total methods are equal to 6 * 6 * 2 = 72 ways.