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inysia [295]
2 years ago
15

Can someone help me please

Mathematics
1 answer:
Vesnalui [34]2 years ago
8 0

Answer:

72

Step-by-step explanation:

for the rectangles you use the formula :

a=lw        3x6=18x2=36    +    4x6=24

and for the triangles you use:

a=1/2bh        3x4=12/2   +    3x4=12/2

then you add it all together

36+24+12=72

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6 0
1 year ago
For what value of x is sin x = cos 19º, where 0°&lt; x &lt; 90°?
KonstantinChe [14]

Answer:

  71°

Step-by-step explanation:

The cosine of an angle is equal to the sine of its complement:

  cos(19°) = sin(90° -19°) = sin(71°)

Comparing to the given expression, we see that x = 71°.

7 0
3 years ago
I need help with this please
kodGreya [7K]
1/5(2x - 10) + 4x = -3(1/5x + 4)
0.4x - 2 + 4x = -0.6x - 12
4.4x - 2 = -0.6x - 12
5x - 2 = -12
5x = -10
x = -2
6 0
3 years ago
Read 2 more answers
In right △ABC with right angle B, m∠A=(3x−8)° and m∠C=(x−2)°.
julsineya [31]

Answer:

<A = 67

Step-by-step explanation:

The three angles of a triangle add up to 180 degrees.  We know a right angle is 90 degrees.

<A + <B + <C = 180

3x-8 + 90 + x-2 =180

Combine like terms

4x-10+90 = 180

4x+80 =180

Subtract 80 from each side

4x+80-80=180-80

4x=100

Divide each side by 4

4x/4 = 100/4

x=25

But we want to know <A

<A = 3x-8

 Substitute x=25

    =3(25) -8

    =75-8

   = 67


6 0
3 years ago
Read 2 more answers
Find the circumference of the following circle. Use 3.14 for π. Round to the nearest hundredth, if necessary.
dybincka [34]

Answer:

18.84

Step-by-step explanation:

3.14 · 6

18.84

3 0
3 years ago
Read 2 more answers
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