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pantera1 [17]
3 years ago
5

Need this turned in by tonight. Solving for x. My brain is fried, I have been doing math for the last 4 hour.Help!!!!!

Mathematics
1 answer:
inysia [295]3 years ago
3 0

Answer:

  • 18. x = 24.5
  • 19. x = 4
  • 21. x = 10

Step-by-step explanation:

Corresponding sides have same ratio

Q18

  • 7/6 = x / (27- 6)
  • 6x = 7*21
  • x = 147/6
  • x = 24.5

Q19

  • (x + 5)/15 = (5x + 1)/35
  • (x + 5)/3 = (5x + 1)/7
  • 7(x + 5) = 3(5x + 1)
  • 7x + 35 = 15x + 3
  • 15x - 7x = 35 - 3
  • 8x = 32
  • x = 4

Q21

  • (x + 6)/24 = (2x - 2)/27
  • (x + 6)/8 = (2x - 2)/9
  • 8(2x - 2) = 9(x + 6)
  • 16x - 16 = 9x + 54
  • 16x - 9x = 54 + 16
  • 7x = 70
  • x = 10
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What is the solution to the inequality -6+|2p+3|>7
andrezito [222]

Answer:

p >5                  or                            p <-8

Step-by-step explanation:

-6+|2p+3|>7

Add 6 to each side

-6+6+|2p+3|>7+6

|2p+3|>13

We get a positive and negative solution

2p +3 > 13             and  2p +3 < -13

Subtract 3 from each side

2p +3 -3> 13-3           or 2p +3-3 < -13-3

2p > 10                                      2p < -16

Divide by 2

2p/2 > 10/2                                2p/2 <-16/2

p >5                  or                            p <-8

5 0
3 years ago
Read 2 more answers
The perimeter of a triangle is 27 centimeters. Two sides of the triangle are 7 centimeters and 13 centimeters. Find the length o
Studentka2010 [4]
I believe it’s the answer is 2.6
3 0
2 years ago
The following table shows a proportional relationship between mmm and nnn.
Marina CMI [18]

Answer:

70707mmm = 111nnn

Step-by-step explanation:

Using the basic equation of a line:

y = mx + c;. where m is slope and c is intercept on y axis.

Let mmm = y and nnn = x

(i) 333 = 212121m + c

(ii) 555 = 353535m + c

Making c the subject of the formula in both (i) and (ii)

c = 333 - 212121m = 555 - 353535m

353535m -212121m = 555 - 333

141414m = 222

m = 111/70707

Substitute in (i) above

c = 333 -333 = 0

Hence; y = 111/70707x + c

Finally, mmm = 111/70707 nnn

i.e. 70707mmm = 111nnn

Hope this helps.

5 0
3 years ago
Read 2 more answers
The ratio of adults to students on the field trip is 3 to 5. If there are 15 students on the field trip, how many adults are the
Kazeer [188]

Answer:

There are 9 adults

Step-by-step explanation:

3:5 = x:15

3/5 = x/15

3(15) = 5x

5x = 45

x = 9 adults

3:5 = 9:15

4 0
3 years ago
Find the exact value of secθ if cscθ=-4/3 and the terminal side of θ lies in Quadrant III.
Anton [14]
Quadrant is III so, sign would be negative for Sec.
Now, we know, csc = H / P
So, H = 4, P = 3
Calculate for B, 
B² = H² - P²
B² = 4² - 3²
B² = 16 - 9
B = √7

We know, sec Ф = H / B = 4 / √7
We can write it as: -4√7 / 7  [ -ve sign for 3rd quadrant ]

In short, Your Answer would be Option B

Hope this helps!
6 0
3 years ago
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