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Stels [109]
3 years ago
12

1. r-8/5=-4/11 2. 9a/a+4= 3/5

Mathematics
1 answer:
BigorU [14]3 years ago
3 0

Answer:

1 r= 68/55

2 no solution

Step-by-step explanation:

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Which two quadrants have negative x-values?
mart [117]

Answer:

II and III  ( 2 and 3)

Step-by-step explanation:

The quadrants are numbered counter clockwise, with the top right being number I

II                I

III                IV

The ones having negative x values are II and III  ( 2 and 3)

3 0
3 years ago
A jewelry maker purchased 20 inches of gold chain.She used 3/8 of the chain for a bracelet. How many inches of gold did she have
Mazyrski [523]

Answer:

12.5 inches of gold chain.

Step-by-step explanation:

To get the remaining chain of gold we need to calculate

8/8 - 3/8 = 5/8 of 20 inches

then multiply:

20 * 5/8 =  100/8

100/8 = 12.5 inches

7 0
3 years ago
One bag contains a mixture of 30% black sand and 70% red sand. A second bag
ipn [44]

Answer:

Finish the question

Step-by-step explanation:

8 0
3 years ago
A person standing on a moving walkway travels 75 feet in 25 seconds. What
Goshia [24]

Answer:

C

Step-by-step explanation:

75 divided by 3 is equal to 25 therefore it is 3 feet per 1 second they will travel 30 feet in 10 seconds

7 0
3 years ago
Read 2 more answers
Sinxcosxtanx=1-cos^2x
ycow [4]

Step-by-step explanation:

sin  x \: cos  x \: tanx = 1 -  {cos}^{2} x \\ LHS \\= sin  x \: cos  x \: tanx \\  =sin  x \: cos  x \: \times  \frac{sin  x}{cos  x}  \\  = sin  x \: \times  \frac{sin  x}{1} \\  ={sin}^{2}  x \\  = 1 -  {cos}^{2} x \\  = RHS \\  \therefore \: sin  x \: cos  x \: tanx = 1 -  {cos}^{2} x \\ Hence \: Proved.

7 0
3 years ago
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