Answer:
1.) the answer is the fourth one, 1/5^7
2.) the answer is the fourth one, 1/5^6
3.) the answer is the fourth one, (2^6)^-5
4.) this is seems to be a duplicate of the first one
Step-by-step explanation:
1.) by 'adding' 4 exponent values on the top it simplifies the top to simply one and 5^7 on the bottom
2.) since this is an exponent of an exponent multiply them, getting 5^-6, then simplify negative exponents.
3.) exponents of exponents are multiplied
Answer:
437/471
Step-by-step explanation:
would consider downloading photomath
Answer:
b=1/2-9/4c
Step-by-step explanation:
first get B on one side
8b+18c=4
-18c -18c
8b=4-18c
divide both sides by 8
8b=4-18c
/8 /8 /8
b=1/2-9/4c
Answer:
1. y=kx
2. y=60
Step-by-step explanation:
y is directly proportional to x
y=kx
Find Constant K, when y=30 & x=6
Make K the subject of the formula first
K=y/x
K=30/6
k=5
When k is 5, x is 12, find y
y=kx
y=5×12
y=60
Answer:
The correct answer is option 3.
50.8°
Step-by-step explanation:
Cos ∅ = Adjacent side/Hypotenuse
From the given figure we can see that it is a right angled triangle.
<u>To find the value of x</u>
Cos x = Adjacent side/Hypotenuse
Adjacent side =4.3
Hypotenuse = 6.8
Cos x = 4.3/6.8 = 0.6323
x = cos⁻¹ (0.6323) = 50.77 ≈ 50.8°
Therefore the correct answer is third option.
50.8°
