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3 years ago

I need answers for those two questions please.

Mathematics

2 answers:

azamat3 years ago

3 0

Answer:

Step-by-step explanation:

sin R=15/39=0,3846

R≈23°

tan 52°= 1,2799

Scilla [17]3 years ago

3 0

Here it is okay okay

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aleksandr82 [10.1K]

Answer:

x=67

y=40

The angles equal 63 and 117

Step-by-step explanation:

88% sure

5 0

3 years ago

EXPLAIN YOUR ANSWER NEED HELP ASAP

Dennis_Churaev [7]

The radius is half the diameter. 19*2=38. The diameter is 38.

7 0

3 years ago

HELP ME Using the following equation, complete the square and find the center and radius of the circle:

IrinaK [193]

Answer: $(-2,3)$ , $r=5\ \text{units}$

Step-by-step explanation:

Given

the equation is $x^2+y^2+4x-6y-12=0$

completing the square

$\Rightarrow (x^2+2\times 2\times x+4-4)+(y^2-2\times3\times y+9-9)-12=0\\\Rightarrow (x^2+2\times 2\times x+4)+(y^2-2\times3\times y+9)-12-4-9=0\\\Rightarrow (x+2)^2+(y-3)^2=25\\\Rightarrow (x+2)^2+(y-3)^2=5^2\\\Rightarrow (x-(-2))^2+(y-3)^2=5^2$

Thus, the center of the circle is $(-2,3)$ and radius is $r=5\ \text{units}$

5 0

3 years ago

Find the surface area of the prism

deff fn [24]

Answer:

161 ft squared

Step-by-step explanation:

8 x 5 x 2 = 80

8 x 7 = 56

5 x 5 = 25

80 + 56 + 25

56 + 25 =81

80 + 81 = 161

161 ft squared

7 0

2 years ago

Solve.... 4n- 9= 2 (5+ 2n)

timama [110]

Answer:

Step-by-step explanation:

Here you go mate

Use PEMDAS

Parenthesis,Exponent,Multiplication,Division,Addition,Subtraction

Step 1

4n-9=2(5+2n) Equation/Question

Step 2

4n-9=2(5+2n) Remove parenthesis

4n-9=4n+10

Step 3

4n-9=4n+10 Subtract 4n to sides

-9=10

Step 4

-9=10 Add 9

0=19

Answer

No solutions

Hope this helps

3 0

3 years ago

I need answers for those two questions please. ​

I need answers for those two questions please.