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aleksandrvk [35]
4 years ago
5

Help plz will mark brainliest.

Mathematics
2 answers:
irina1246 [14]4 years ago
7 0
AB = 24
BC = 45
AC = 51

cos C = adjacent / hypotenuse
cos C = BC / AC
cos C = 45/51

svlad2 [7]4 years ago
3 0
900 is the right answer

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The variable z is directly proportional to x. When x is 11, z has the value 44. What is the value of z when x = 21?
dimulka [17.4K]

Directly proportional, both increase/decrease, Multiple k(constant you needed to solve for)..

Inversely --one increases as the other decreases, increase the denominator & fraction gets smaller.... So

Problem:

Dirextly to X (× by X)

Inversely to Y, (÷ by Y)

Z= k X/Y

Solve, working backwards: Z =5 becomes

5 = k (X) ÷ (Y). And

X=15 and Y =9 becomes

5= k(15)/(9). Undo ÷9, ×9 both sides

45= k(15). Now undo ×15 by ÷15 both sides

45/15 = 3. So k=3, (also called your constant of variation)....and your Equation/Proportion becomes...

Z = 3X/Y

Use the new #s.... X=23, Y=14

Z= 3×23÷14 = 69/14. If they want spirochete answer divide and round to corresponding # if decimals

4 0
3 years ago
Id really appreciate it if someone helped me , i’ll give you brainliest
Vadim26 [7]

Answer: it’s the same 110 degrees

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
0.05 is 1/10 the value of what
Dafna1 [17]

Answer:

0.05

Explanation:

Let x = the number

.05 = .1x

5/100 = (1/10)x       Multiply both sides by 10.

5/10 = x

1/2 = x

8 0
3 years ago
Evaluate the algebraic<br> expression:<br> Plz answer quick
Andrew [12]

Answer:

7,-5,-11

Step-by-step explanation:

-3(-4)-5=7

-3(0)-5=-5

-3(2)-5=-11

5 0
3 years ago
What is 0.75 in a fraction lowest terms?
kompoz [17]
0.75 = 3/4

3/4 is your anwer
3 0
3 years ago
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