Answer:
x = 36
Step-by-step explanation:
x - 3y = 12
substitute y for 8
x - 3 * 8 = 12
x - 24 = 12
x = 12 + 24
x = 36
Answer:
∠a and ∠d; ∠b and ∠c
Step-by-step explanation:
The two triangles as similar triangles and the scale factor is 2 : 1
The sides measuring 6 and 3 are corresponding sides
The sides measeuring 8 and 4 are ocrreposnding sides
⇒ ∠a and ∠d are corresponding angles
The sides measuring 8 and 4 are corresponding sides
The sides measeuring 4 and 2 are ocrreposnding sides
⇒ ∠b and ∠c are corresponding angles
Answer:
$112.17
164.95 * 0.32 = 52.784
164.95 - 52. 784 = 112.166
112.166 = 112.17
Answer:
x = 3√7 cm.
or 7.94 cm to the nearest hundredth.
Step-by-step explanation:
We use the Cosine Rule:
21^2 = x^2 + (2x)^2 - 2x.2x cos 120
21^2 = 5x^2 - 4x^2 * -0.5
441 = 5x^2 + 2x^2
7x^2 = 441
x^2 = 63
x = √63
x = 3√7 cm.
Answer:
P+4=28, meaning that the original perimeter was 24
Step-by-step explanation:
Let's call the perimeter P.
Converting the words into an equation, you get:
P+4=28
Now, you can subtract 4 from both sides:
P+4-4=28-4
P=24
Hope this helps!