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Brilliant_brown [7]
3 years ago
7

Do angles always form perpendicular lines?

Mathematics
1 answer:
densk [106]3 years ago
4 0

Answer:

Perpendicular lines are lines that intersect at a right (90 degrees) angle.so no form of perpendicular for angles except 90° angles

Step-by-step explanation:

Two lines are perpendicular if and only if they form a right angle. Perpendicular lines (or segments) actually form four right angles, even if only one of the right angles is marked with a box.

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An arithmetic sequence has this recursive formula: What is the explicit formula for this sequence? A. an = (–1) + (n – 7)(–4)
tresset_1 [31]

bearing in mind that an explicit form is simply the sequence written as a function of some variables, so we simply simplify and add like-terms.

\bf a_n=(-1)+(n-7)(-4)\implies a_n=-1+(-4n+28)\implies a_n=27-4n

4 0
4 years ago
Read 2 more answers
What is 7x-6=9x+6? PLEASE HELP ME!!!!!!!!!!!!!
vovangra [49]

Answer:

x=-6

Step-by-step explanation:

7x-9x=6+6

-2x=12

x=-6

5 0
3 years ago
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Eight trials are simulated. The results are shown in the table.
bezimeni [28]

Answer:

2.897

Step-by-step explanation:

Let us find the mean and variance for the sample first.

105 104 110 112

114 106 108 109

Mean = sum/8 = 108.5

Variance = 12

Std dev = sq rt of variance = 3.464

Std error = std dev/ sq rt n

since n =8, we get std error = 1.225

Since sample size is small, df =8-1 =7

For 95% confidence intervals, t critical value for two tailed=2.365

Margin of error = std error x t critical = 1.225(2.365)

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3 0
3 years ago
40pts!! Select the correct answer. <br> Simplify.
stiv31 [10]

Hey!

-------------------------------------------------

Solution:

=\frac{3x^2y^3}{z^3}

Cube the coefficients.

= \frac{27x^2y^3}{z^3}

Multiply the exponents.

= \frac{27x^6y^9}{z^9}

-------------------------------------------------

Answer:

Option D.

-------------------------------------------------

Hope This Helped! Good Luck!

5 0
3 years ago
Find the number of subsets of the set {1, 2, 3, ..., 9}
Irina18 [472]

Answer:

512

Step-by-step explanation:

the number of subsets of the set {1, 2, 3, ..., 9} is : 2^9 = 512

6 0
3 years ago
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