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USPshnik [31]
3 years ago
11

SOMEONE HELP ME PLEASE

Mathematics
2 answers:
lawyer [7]3 years ago
8 0

Answer:

y = 90

Step-by-step explanation:

You can use proportions to answer this question.

\frac{30}{-3} =\frac{y}{-9}

Cross multiply 30 to -9; -3 to y

-270=-3y

Isolate <em>y</em> by dividing -3 on both sides

y=90

Darya [45]3 years ago
6 0

Answer:

90

Step-by-step explanation:

30/-3 = ?/-9

Cross Multiply-

30 × -9 = -270

-3 × ? = -3

-270 ÷ -3 = 90

y = 90

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Number of non sqaure number are there between 36² and 37²
EastWind [94]

Answer:

A 1,296

B 1,369

36 answer

3 0
3 years ago
I have finals tomorrow lol. If you guys could teach me how to do this you’d be amazing
ddd [48]
2r + 2r + 5 + r + 4r - 3 = 38

9r + 5 - 3 = 38

9r + 2 = 38

9r = 38 - 2

9r = 36

9r/9 = 36/9

r = 4cm

Done!
3 0
3 years ago
Students from two age groups were surveyed to see how they travel to school. Here are the results:
liq [111]

Answer:

The table representing the number of students by which mode of transport they travel is given as:

                              Walk or bike    Bus       Car     Row Total

Below age 15            87                    60        18           165

Age 15 and above   65                    50        80         195

Column Total            152                  110        98         360

We know that a relative frequency of an event is the ratio of frequency to the total number of trials.

i..e we divide each frequencies by 360 to obtain a two-way relative frequency.

Hence,the table is given as:

                              Walk or bike    Bus       Car     Row Total

Below age 15            0.24               0.17      0.05         0.46

Age 15 and above    0.18                0.14      0.22        0.54

Column Total             0.42               0.31     0.27          1                        

6 0
3 years ago
Read 2 more answers
01. Se tienen los angulos consecutivos AOB, BOC y COD. se cumple m&amp; AOC=125° m <br>​
Citrus2011 [14]

La diferencia entre los ángulos <em>AOB</em> y <em>COD</em> del sistema de tres ángulos <em>consecutivos</em> es igual a 25°.

La medida del ángulo BOC pertenenciente al sistema de tres ángulos consecutivos es igual a 20°.

<h3>Cómo analizar tres ángulos consecutivos</h3>

Por la geometría Euclídea conocemos que un conjunto de ángulos cuando comparten entre cada par de ángulos vecinos comparten el mismo vértice y la misma semirrecta.

De acuerdo con el enunciado, tenemos las siguientes condiciones:

∠AOB + ∠BOC = 125°   (1)

∠BOC + ∠COD = 100°  (2)

Por (1) y (2) tenemos las siguiente identidad:

∠AOB - 25° = ∠COD

∠AOB - ∠COD = 25°

La diferencia entre los ángulos <em>AOB</em> y <em>COD</em> del sistema de tres ángulos <em>consecutivos</em> es igual a 25°. \blacksquare

En el segundo caso, tenemos el siguiente sistema:

∠AOB = ∠BOC + ∠COD     (3)

∠AOB + ∠BOC - ∠COD = 40°     (4)

Por (3) y (4) tenemos la siguiente identidad:

2 · ∠BOC = 40°

∠BOC = 20°

La medida del ángulo BOC pertenenciente al sistema de tres ángulos consecutivos es igual a 20°. \blacksquare

Para aprender más sobre ángulos, invitamos cordialmente a ver esta pregunta verificada: brainly.com/question/21209282

8 0
2 years ago
I need help wit 5/2 divided by 5/7 =
Agata [3.3K]

Answer:

7/2

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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