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Nina [5.8K]
3 years ago
13

Solve for r write the answer in simplified form 7 = - 7r

Mathematics
1 answer:
alex41 [277]3 years ago
3 0

Answer:

r = -1

Step-by-step explanation:

To get r isolated, you have to divide each side by -7

7 divided by -7 is -1, therefore r = -1

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Please help and explain ( Brainliest for answer!)
Novosadov [1.4K]

Answer:

AD = 3

Step-by-step explanation:

Pythagoras theorem formula: a² + b² = c² (c being the hypotenuse, the longest side of the triangle).

Using this formula, you can easily say that c²-b²=a². c=5, b=4, making the equation 5² - 4² = a ².

Expanding the formula, you'll get 25 - 16 = a².

25 - 16 = 9.

This means that 9 = a².

To find a, you need to root 9. Using a calculator, you'll know that this number is 3, meaning that AD = 3.

7 0
3 years ago
Diana creates a graph for the amount of money she earns, y, for working x hours. The graph contains the points (34,408), (40,480
Leni [432]

Answer:

C, B

Step-by-step explanation:

     x        y

A 34     408

B 40     480

C 46     588

A= $12/hour

B= $12/hour

C= $12.78/hour

The difference between A and B is 72.  The difference between B and C is 108.

6 0
3 years ago
Read 2 more answers
Last week Jennifer ran 7 1/2 blocks less than Sam. Jennifer ran 35
STatiana [176]

Answer:

42.5

Step-by-step explanation:

35+7.5=42.5

7 0
3 years ago
In triangle pqr PQ is equals to PR and angle Q is equals to 80 degree find angle p​
Dmitry [639]

Answer: ∠P= 20°

<h3>Step-by-step explanation: Well we know that the sum of a triangle always equals to 180°, so ∠P + 80 +80 = 180° </h3>

∠P + 160 = 180

Subtract 160 from both sides, 160 on the left is cancelled so that 180-160 equals 20  

∠P=20°

6 0
3 years ago
What is 3/5=h/20 can you please help me
baherus [9]
3/5 x 4 = 12/20
H = 12
Sorry if wrong
7 0
3 years ago
Read 2 more answers
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