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Vera_Pavlovna [14]
3 years ago
15

Who can help please?

Mathematics
1 answer:
Zolol [24]3 years ago
7 0
The answer of 7. is -0.688
You might be interested in
Find the value of X.
VashaNatasha [74]

Answer:

19) 28°

20) 60°

21) 17°

Step-by-step explanation:

19)

Supplementary angles:

(x + 12)º + 140º = 180º

x + 12 + 140 = 180

x = 180 - 140 - 12

x = 28º

20)

Angles at a point:

(- 24 + x)° + 24° + 300° = 360°

- 24 + x + 24 + 300 = 360

x = 360 - 300

x = 60°

21)

Vertically opposite angles:

(1 + 3x)° = 52°

1 + 3x = 52

3x = 52 - 1

3x = 51

x = 17°

6 0
3 years ago
Two angles are complementary. Angle A Is (2x+20) and angle B is (3x+10). Find the value of x and the measure of each angle
bearhunter [10]
X=12

m<A = 44

m<B = 46
4 0
4 years ago
It would mean so much if u help me out on this one!
tia_tia [17]

Answer:the answer should be B :) !

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
.....................
Allisa [31]

Answer:

30

Step-by-step explanation:

We require to calculate the volume of 1 brick

V = lbh ( l is length, b is breadth and h is height ), that is

V = 14 × 8 × 5 = 560 cm³

Now divide the volume of concrete available by the volume of 1 brick.

number of bricks made = \frac{16800}{560} = 30

5 0
3 years ago
Can you work out G and H for me please. preferably telling me how you did it aswell
Veronika [31]
Abd is a right angled triangle so by pythagoras we know
{g}^{2}  =  {11}^{2}  +  {13}^{2}  \\  {g}^{2}  = 290 \\ g =  \sqrt{290}  \: or \: g = 17.03cm
and to calculate h we need to use the sine rule
\frac{h}{ \sin(22) }  =  \frac{g}{ \sin(32) }  \\  \frac{h}{ \sin(22) }  =  \frac{17.03}{ \sin(32) }  \\ h =  \frac{17.03}{ \sin(32) } \times  \sin(22)   \\ h = 12.04cm
i hope this helps
8 0
3 years ago
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