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labwork [276]
3 years ago
6

Plz help me with this

Mathematics
1 answer:
Delvig [45]3 years ago
4 0

Answer:  C) log₄ 84

<u>Step-by-step explanation:</u>

The rule for condensing (combining) log expressions that are added is MULTIPLICATION

log₄12 + log₄7 = log₄(12 × 7) = log₄ 84

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What percentage of the distance covered by an Olympic triathlon do athletes cycle if the swim for 3%, run for 20% and cycle the
Dafna1 [17]
100- (20+3)
=100-23
=77%
4 0
3 years ago
The 8th and 20th terms of an arithmetic sequence are 20 and 56 respectively. ​What is the 1st term of the sequence.
Ostrovityanka [42]

Answer:

<h3>             a₁ = -1</h3>

Step-by-step explanation:

a_n=a_1+d(n-1)\\\\a_8=a_1+d\cdot7\\\\a_{20}=a_1+d\cdot19\\\\a_{20}-a_8=a_1+19d-(a_1+7d)=12d\\\\56-20=2d\\\\12d=36\\\\d=3\\\\\\ a_1+3\cdot7=20\\\\a_1=20-21=-1

6 0
3 years ago
Whats a quadratic equation that has the roots of 6 and negative 9
Komok [63]

Answer:

x^2-3x-54

Step-by-step explanation:

(x+6)(x-9)     Setup the roots

x^2-9x+6x-54   FOIL out the terms

x^2-3x-54    Add like terms together

5 0
3 years ago
What is the measure of LXZW?<br> 850<br> 150°<br> Y<br> 65°<br> 95<br> Z<br> 215°<br> W<br> 30°
Semenov [28]

Answer:

so the answer is 95°

Step-by-step explanation:

The two angles on a line add up to 180° or are supplementary, so we can find the inside angle x by doing 180-150=30°. Now that we know inside x is 30, if we add 30+65, we get 95, and 180-95=85°. Then to find angle xzw, just do 180-85 to get 95°.

3 0
3 years ago
If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11?
Papessa [141]
5/11 = 18/y
5 y = 18 · 11
5 y = 198
y = 198 : 5 
y = 39.6
3 0
3 years ago
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