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Vladimir [108]
3 years ago
10

I need help with this pls anybody if u know these pls help

Mathematics
1 answer:
N76 [4]3 years ago
5 0

Answer: Please give me brainliest?

4: B

5: B

6: H (12)

8: C (3,-6)

7: 120

Step-by-step explanation:

6.

6x-6=3x+30

3x=36

x=12

7. 7x-6=5x+30

2x=36

x=18

5 x 18 = 90 +30 = 120

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Solve these two equations
tangare [24]

Answer:

a.(2/7,31/7) b.(97,71)

Step-by-step explanation:

im not writing all the work i did its just substitution of the value of x and y from the second equation to the first

8 0
3 years ago
Evaluate sin^2 (pi/4) + cos^2(pi/4) + cos.
mart [117]

The answer of sin^2 (pi/4) + cos^2 (pi/4) is √ 2

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

The value of sin^2 (pi/4) = √2/ 2

The value of cos^2 (pi/4) = √2/ 2

=  √2/ 2 +  √2/ 2

=  √2 +  √2 / 2

= 2 √2 / 2

Dividing √2 by 1

= √2

3 0
3 years ago
Rewrite the following equation in slope-intercept form. 17x + 15y = 5 Write your answer using integers, proper fractions, and im
omeli [17]
Answer:
y = \frac{-17}{15} x + \frac{1}{3}

Explanation:
The slope-intercept form of the equation has the following formula:
y = mx + c
where:
m is the slope
c is the y-intercept

The given is:
17x + 15y = 5

To put it in the slope-intercept formula, we should isolate the y as follows:
17x + 15y = 5
15y = -17x + 5
y = (-17/15) x + (5/15)
y = \frac{-17}{15} x + \frac{1}{3}
where:
m is the slope = -17/15
c is the y-intercept = 1/3

Hope this helps :)

7 0
3 years ago
How many different numbers can you make out of 1,2,3 and they can't have two of the same numbers in 1 problem ( can't be decimal
Zigmanuir [339]
There are 3 different numbers
slot method

how many 3 digit numbers?
321
312
123
132
213
231
 

6 numbes

how many 2 digit numbers?
12
21
13
31
23
32

6 numbers

how many 1 digit numbers
1
2
3

3 of them

6+6+3=15


15 different number, yah you ar right
6 0
3 years ago
Please help please !!!
Kobotan [32]
<h3>Answer:  12</h3>

========================================================

Explanation:

You can use the AAS (angle angle side) theorem to prove that triangle ABD is congruent to triangle CBD.

From there, we can then say that AD and DC are the same length

AD = DC

3y+6 = 5y-18

3y-5y = -18-6

-2y = -24

y = (-24)/(-2)

y = 12

6 0
3 years ago
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