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3 years ago

Who can help please?

Mathematics

1 answer:

Zolol [24]3 years ago

7 0

The answer of 7. is -0.688

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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:

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