Answer:
320 g flour
8 g salt
12 g yeast
20 ml oil
Step-by-step explanation:
To get from 600 to 400, divide by 1.5
To find the amounts of the other ingredients she will use, divide by 1.5
480/1.5 = 320 g flour
12/1.5 = 8 g salt
18/1.5 = 12 g yeast
30/1.5 = 20 ml oil
Answer:
0=0
1=10
2=15
3=20
Step-by-step explanation:
What I did was I multiplied each number by 5, then added 5.
Let's eliminate x. Mult the first eq'n by 4, obtaining
-4x + 8y = 36
Now add the 2nd equation to this result:
-4x + 8y = 36
4x + 5y = 3
--------------------
13y = 39, so y = 3.
Subst. 3 for y in the 2nd equation and solve the result for x:
4x + 5(3) = 3 => 4x = -12 => x = -3. Solution is (-3,3).
Answer:
C
Step-by-step explanation:
Since they're the same factor being raised to a power. Treat them as a log of 2.
Log² 48 - 38
Log² 2
= 2²
Answer:
15. 
16. m<V = 103°
17. 
Step-by-step explanation:
15. The figure given is quadrilateral. Sum of interior angles of a quadrilateral = 360°
Therefore:

Solve for x

Add like terms

Subtract 112 from each side

Divide both sides by 31

16. The polygon is a hexagon. Sum of interior angles of a hexagon = 720. Therefore:

Solve for x

Add like terms

Subtract 321 from each side

Divide both sides by 21

m<V = 5x + 8
Plug in the value of x
m<V = 5(19) + 8 = 95 + 8
m<V = 103
17. The polygon is a regular pentagon. This means each of the angles measures 108°. The sum of the interior angles all together is 540.
Therefore:

Solve for x

Add 18 to both sides

Divide both sides by 9
