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1 year ago

Can someone help me pls! I would appreciate it!!

Mathematics

1 answer:

Lena [83]1 year ago

8 0

Complementary angles add to 90 degrees.
Supplementary angles add to 180 degrees.
Vertical angles are equal.

So, the answers are (in degrees):

6) 47, 137, 43

7) 49, 131, 49

8) 18, 72, 18

9) 13, 77, 167

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Solve.<br> 3x-4y=-5<br> -x+2y=3<br> Write answer in the form (x,y).

ch4aika [34]

3x-4y=-5
-x+2y=3
Multiply the second by one:
3x-4y=-5
-2x+4y=6
Combine the equations:
x = 1
Substitute x and solve for y:
-2*1+4y=6
-2+4y=6
4y=8
y=2
Answer:
(1,2)

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3 years ago

Evaluate the given expression. Subscript 5 Baseline P Subscript 2 a. 40 c. 25 b. 32 d. 20

Leto [7]

Answer:

d. 20

Step-by-step explanation:

The given question implies 5 permutation 2, i.e $_{5}$ $P_{2}$ .

But,

$_{n}$ $P_{r}$ = $\frac{n!}{(n - r)!}$

So that for $_{5}$ $P_{2}$ , n = 5 and r = 2.

$_{5}$ $P_{2}$ = $\frac{5!}{(5 - 2)!}$

= $\frac{5!}{3!}$

= $\frac{5*4*3*2!}{3*2!}$

Cancel out 3 and 2 with respect to the numerator and denominator.

$_{5}$ $P_{2}$ = 5 * 4

= 20

Therefore,

$_{5}$ $P_{2}$ = 20

So that the correct option is D.

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3 years ago

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What is the percent of change if 30 is decreased to 25?

Luden [163]

Answer:

16.67%

Step-by-step explanation:

initial rate=30

final rate =25

decreased rate = 30 - 25= 5

Now,

Decreased % = (5 / 30) * 100%

= 16.67%

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2 years ago

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Write an equation in slope-intercept form y = mx + b of a line with a slope of 3/4

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Answer:

y=3/4x-2

Step-by-step explanation:

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boyakko [2]

Answer:

y = 4/5 x + 2/5

Step-by-step explanation:

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