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atroni [7]
3 years ago
7

Pleaseeee help

Mathematics
2 answers:
Firdavs [7]3 years ago
6 0

Answer:

(1, - 5)

Step-by-step explanation:

To determine which ordered pair is a solution

Substitute the x value into the right side of the equation and if the value is equal to the y- coordinate of the point then it is a solution.

(1, - 5)

y = - 4(1) - 1 = - 4 - 1 = - 5 ← True

(4, 15)

y = - 4(4) - 1 = - 16 - 1 = - 17 ≠ 15

(2, - 7)

y = - 4(2) - 1 = - 8 - 1 = - 9 ≠ - 7

(- 5, 1)

y = - 4(- 5) - 1 = 20 - 1 = 19 ≠ 1

(1, - 5) is a solution to the equation y = - 4x - 1

Nataly_w [17]3 years ago
3 0

Answer:

(1,-5) this one is correct answer

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Possible number of learners in the
Anestetic [448]

Find multiples of 30 and 40:

30: 30, 60, 90, 120, 150

40: 40, 80, 120, 160

The least common multiple is 120, so every 120 minutes they willl both ring.

1 hour = 60 minutes:

120/60 = 2 hours.

The bells ring together every 2 hours.

8 + 2  = 10 am

10 +  = 12pm

12 + 2 = 2 pm

The bells will ring together at am, 12 pm and 2 pm.

6 0
3 years ago
Read 2 more answers
Um homem está localizado a 300 m de uma estrada linear (reta). Nessa estrada está localizada a sua esposa a 500 m do homem. Ambo
lukranit [14]

Answer:

The distance of the restaurant from the man and woman = 312.5 m

Option C is correct.

A distância do restaurante do homem e da mulher = 312,5 m

A opção C está correta.

Step-by-step explanation:

English Translation

A man is located 300 m from a linear (straight) road. On that road his wife is located 500 m from the man. Both walk towards a restaurant that is on the road and is the same distance from the two. What is this distance in meters?

A) 400m

B) 300m

C) 312.5m

D) 325m

E) 87.5m

Solution

A diagram showing the scenario described, is presented the attached image.

From the attached image, x is the distance of the restaurant from both the man and the woman. So, there are two right angled triangles,

- The bigger one with hypotenuse 500 m and other side 300 m, the third side is calculated as

(Third side)² = 500² - 300² = 160000

Third side = 400 m

- The smaller right angled triangle, with hypotenuse x m and other sides 300 m & (400 - x) m

(400 - x)² + 300² = x²

160000 - 800x - x² + 90000 = x²

800x = 160000 + 90000 = 250000

x = (250000/800) = 312.5 m

Hence, the distance of the restaurant from the man and woman = 312.5 m

In Portugese/Em português

Um diagrama mostrando o cenário descrito é apresentado na imagem em anexo.

Na imagem em anexo, x é a distância do restaurante do homem e da mulher. Então, existem dois triângulos retângulos,

- Quanto maior com hipotenusa 500 me outro lado 300 m, o terceiro lado é calculado como

(Terceiro lado) ² = 500² - 300² = 160000

Terceiro lado = 400 m

- O triângulo angular direito menor, com hipotenusa x me outros lados 300 m & (400 - x) m

(400 - x)² + 300² = x²

160000 - 800x - x² + 90000 = x²

800x = 160000 + 90000 = 250000

x = (250000/800) = 312.5 m

Portanto, a distância do restaurante do homem e da mulher = 312,5 m

Hope this Helps!!!

Espero que isto ajude!!!

4 0
3 years ago
Math question 2! Thanks if you help
Greeley [361]

Answer: 15.6 m

Step-by-step explanation:

Two legs of right angle in right triangle given are 12m and 10m.

For the third side use Pythagoras theorem:

C^2= a^2+b^2

C=√[(12^2)+(10^2)]

C=√[144+100]

C=√[244]= 15.6 m

6 0
3 years ago
Read 2 more answers
1+1 PLEASE PLEASE PLEASE LPEASE PLEASAE PLEASE
arlik [135]

Answer:

2

Step-by-step explanation:

1+1=2 so the answer is 2

5 0
2 years ago
Read 2 more answers
Help fastttt please!!!!! When making a pie chart for this data, what percentage of the dresses would the sector label "Blue" inc
lbvjy [14]

Answer:

14%

Step-by-step explanation:

First find the total for all the dresses.

Total = 14 + 37 + 22 + 56 + 33

Total = 162

Now you are concerned about the blue dresses.

% = (22 / 162)  * 100 = 13.58 %

Rounded to the nearest % it would be 14%

The number of degrees it would occupy in the pie chart would be 360 * 14/100 = 49 degrees.

4 0
3 years ago
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