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3 years ago

WILL GIVE BRAINIEST

Mathematics

1 answer:

Margarita [4]3 years ago

8 0

Answer:

x = 135º

Step-by-step explanation:

Sum of angles in a triangle is 180

A = 180 - 66 - 69

A = 45º

--------------------

Supplementary angles total 180

x = 180 - 45

x = 135º

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it takes 52 minutes for 5 people to paint 5 walks. how many minutes does it take 20 people to paint 20 walks

Viktor [21]

Answer:

52min

Step-by-step explanation:

5 people..............5 walls............52 min

1 people...............5 walls...........52 x 5=260 min

1 people................20 walls.........260 x 4 =1040 min

20 people................20 walls........1040:20=52 min

7 0

3 years ago

Read 2 more answers

19. A cross section of a water trough is in the shape of trapezoid with bases measuring 4 m and 12 m. what is the length of the

ludmilkaskok [199]

Given:

The bases of trapezoid measuring 4 m and 12 m.

To find:

The median of the trapezoid.

Solution:

The median of the trapezoid is the average of its bases.

$\text{Median}=\dfrac{\text{Upper base + Lower base}}{2}$

The bases of trapezoid measuring 4 m and 12 m. So, the median of the trapezoid is:

$\text{Median}=\dfrac{4+12}{2}$

$\text{Median}=\dfrac{16}{2}$

$\text{Median}=8$

Therefore, the correct option is C.

5 0

3 years ago

PLEASE HELP I WILL GIVE BRAINLYEST AWNSER IF YOU AWNSER ALL THE PROBLEMS IN ALL THE QUESTION

bixtya [17]

Answer:

7) Mean = 48 8) Mean = 59.6 9) Mean = 31.6 10) Mean = 42.1

Median = 47.5 Median = 61 Median = 32 Median = 40

Mode = 72 Mode = 90 Mode = 46 Mode = 51

Range = 66 Range = 79 Range = 34 Range = 51

Step-by-step explanation:

7 0

3 years ago

Match the solid figure to the appropriate formula.

AlekseyPX

1. $L \cdot A=\pi r l$ - Cone

2. $V=\frac{4}{3} \pi r^{3}$ - Sphere

3. $T \cdot A=2 \pi r h+2 \pi r^{2}$ - Cylinder

4. $V=\frac{1}{3} B h$ - Pyramid

5. $L . A=p h$ - Prism

Solution:

1. $L \cdot A=\pi r l$

Lateral surface area of cone = $\pi r l$

where r is the radius of the cone and l is the slant height of the cone.

2. $V=\frac{4}{3} \pi r^{3}$

Volume of sphere = $\frac{4}{3} \pi r^{3}$

where r is the radius of the sphere.

3. $T \cdot A=2 \pi r h+2 \pi r^{2}$

Total surface area of cylinder = $2 \pi r h+2 \pi r^{2}$

where r is the radius of the cylinder and h is the height of the cylinder.

4. $V=\frac{1}{3} B h$

Volume of pyramid = $\frac{1}{3} B h$

where B is the base area of the pyramid and h is the height of the pyramid.

5. $L . A=p h$

Lateral surface area of prism = $p h$

where p is the perimeter of the base and h is the height of the prism.

4 0

2 years ago

Please help me I'll give you a brainliest

astraxan [27]

Okay try to round the whole number and see if you can solve that should help you

7 0

2 years ago