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3 years ago

Please help ??? I really need jelp

Mathematics

1 answer:

uysha [10]3 years ago

4 0

Answer:

$x = 128 \\$

Step-by-step explanation:

$38 + 90 + x = 180 \\ 128 + x = 180 \\ x = 180 - 128 \\ x = 52 \\ 180 - 52 \\ = 128$

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PLEASE, HELP DUE IN 5 MINUTES 20 POINTS THANK YOU MAKE SURE ITS RIGHT!

Romashka-Z-Leto [24]

Her grandma will be there 40 minutes early. If you add the hours first, then it makes it 6:35. Add the 50 minutes, 7:25 is the arrival time.

6 0

4 years ago

Help ASAP please! ill mark brainliest!

alexdok [17]

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

A point x is 34m due to east of a point Y . The bearing of a flagpole from x and Y are N18°W And N40°E respectively .

Murljashka [212]

Answer:

The distance of flag post from Y is 38.13 m

Step-by-step explanation:

Consider point Y at the intersection of both lines as shown below. Now the point X lies 34 meter from point Y in east direction.

Now flag pole at point X lies at a bearing of N18°W. That is at point X from north, flag post makes an angle of 18° towards west.

Similarly flag pole at point Y lies at a bearing of N40°E. That is at point Y from north, flag post makes an angle of 40° towards east.

Consider ∆ AXY as right angle triangle. Therefore measure of angle FXY is,

$\angle AXY=\angle AXF+\angle FXY$

$\therefore 90 \degree=18\degree+\angle FXY$

$\angle FXY=72\degree$

Consider ∆ BYX as right angle triangle. Therefore measure of angle FYX is,

$\angle BYX=\angle BYF+\angle FYX$

$\therefore 90 \degree=40\degree+\angle FYX$

$\angle FYX=50\degree$

Refer attachment 1.

From diagram consider the triangle FYX. To find the third angle that is ∠YFX can be calculated by using angle sum property of triangle.

∠YFX+∠FYX+∠FXY=180°

∠YFX+50°+72°=180°

∠YFX=58°

Refer attachment 2.

Now the distance FY can be calculated using sin rule as follows,

$\frac{\sin X}{FY}=\frac{\sin F}{YX}=\frac{\sin Y}{FX}$

Substituting the values,

$\frac{\sin 72}{FY}=\frac{\sin 58}{34}=\frac{\sin 50}{FX}$

Simplifying first two terms,

$\frac{\sin 72}{FY}=\frac{\sin 58}{34}$

Cross multiplying,

$34\times\sin 72=FY\times \sin 58$

$\dfrac{34\times\sin 72}{\sin 58}=FY$

$FY=38.13$ m

7 0

3 years ago

Create your own system of equations word problem. Please answer with full step explanation to how you got it thank you :)

Nastasia [14]

mj thinks of a number. she adds 2 to the number then multiples the result by 3. The answer is the same as adding 5 to the number them multiplying by 2

my number is d

3 (d×2) = 2 (d+5)

3×d + 3×2 = 2×d + 2×5

3d + 6 = 2d + 10

3d +6 -6 -2d = 2d - 10 - 6

3d - 2d = 10 - 6

d = 4

8 0

3 years ago

The distance a butterfly flies varies directly with it's time in the air. If a butterfly travels 264 ft in 0.5 min, how far will

Eva8 [605]

Answer:

The butterfly travels 660 ft in 1.25 min.

Step-by-step explanation:

If the distance, d, a butterfly flies varies directly as the time,t in the air, then we can write the mathematical statement.

$d\propto t$

If we introduce the constant of proportionality, we obtain;

$d=kt$

According to the question, when $d=264\:ft$ , $t=0.5\:min$ .

We substitute these values to obtain;

$264=0.5k$

$\Rightarrow k=\frac{264}{0.5}$

$\Rightarrow k=528$

The direct variation equation now becomes

$d=528t$

When $t=1.25\:min$

$d=528(1.25)$

$d=660$

Therefore the butterfly will travel 660 ft in 1.25 min.

7 0

3 years ago

Please help ??? I really need jelp​

Please help ??? I really need jelp