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Ad libitum [116K]
2 years ago
9

What is the value of X? Show your work.

Mathematics
1 answer:
solong [7]2 years ago
7 0

Answer:

x = 34.915°

Step-by-step explanation:

law of cosines

angle = arccos (b^2+c^2-a^2/2bc)

angle

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To determine her power usage​, Keri divides up her day into three​ parts: morning,​ afternoon, and evening. She then measures he
marusya05 [52]

Answer:

Stratified Sampling

Step-by-step explanation:

Since Keri divides the day into different strata and each unit is selected from each strata randomly. So, it is Stratified Sampling.

Further, In Stratified Sampling population is divided into several groups such that within the group it is homogeneous and between the group it is heterogeneous. And now a selection of each stratum and unit has an equal chance of selection.

3 0
3 years ago
HELP PLEASE and help me understand
const2013 [10]

When subtracting a number from a negative (like question one) the subtraction sign will now be an addition sign.

1.

6-(-7)=13

For question 2, its simple subtraction. If you subtract a negative from positive, it'l be a negative.

2.

-3 - 3= -6

3.

-15 - 23 = -38

Now we combine my previous explanations. Subtracting a negative from a negative will be like adding (like in question 4)

4.

-9 - (-5)= -4

5.

5 - (-15)=20

6.

78-(-17)=95


Extra Info:

When adding a number (doesnt matter if positive or negative) to a negative it will turn into subtraction.

Examples:

6+(-9)=-3

-9+(-9)= -18

4 0
3 years ago
An angle whose measure is more than 90 but less than 180 is called an obtuse angle​
Brums [2.3K]

Answer:

That's correct

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
How do I do this qn?
denis-greek [22]
You can take the log of the left and right hand side, and then apply the <span>logarithm rules:

log(a</span>ˣ) = x·log(a)
log(ab) = log(a) + log(b)

log(9^(x-1) * 2^(2x+2)) = log(6^(3x))
log(9^(x-1)) + log(2^(2x+2)) = 3x log(6)
(x-1) log(9) + (2x+2) log(2) - 3x log(6) = 0
x(log9 + 2log2 - 3log6) = log9 - 2log2
x = (log9 - 2log2) / (log9 + 2log2 - 3log6)

simplifying by writing log9 = 2log3 and log6 = log2+log3

x= 2(log3 - log2) / (2log3 + 2log2 - 3log2 - 3log3) = 
x= -2(log3 - log2) / (log3 + log2) = -2 log(3/2) / log(6)

So 6^x = 4/9
3 0
3 years ago
Can someone answer this !
rodikova [14]

Answer:

11253

Step-by-step explanation:

the steps are described in the picture above

6 0
2 years ago
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