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RoseWind [281]
3 years ago
6

Help me please I'll be doing more

Mathematics
1 answer:
MatroZZZ [7]3 years ago
3 0

Answer:

Step-by-step explanation:

1. 7 4/11 + 2 6/11 = 9 10/11

2. 5 1/12 + 6 3/12 = 11 4/12 = 11 1/3

3. 8 4/15 + 3 2/15 = 11 6/15 = 11 2/5

4. 6 1/9 + 2 3/9 = 6 4/9

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Solve 3(x−5) = 9. <br><br> x = −3 <br> x = 2 <br> x = 7 <br> x = 8 (this is the answer)
Mariulka [41]

Answer:

x = 8

Step-by-step explanation:

3(x−5) = 9   (by PEDMAS, distribute 3 into parentheses by distributive property)

x(3)−5(3) = 9

3x - 15 = 9   (add 15 to both sides)

3x = 9 + 15

3x = 24   (divide both sides by 3)

x = 24/3

x = 8

8 0
3 years ago
fatima wants to find the value of sin theta, given cot theta equals 4/7. which identity would be best for fatima to use?
choli [55]
We know that
1+cot ²∅=csc² ∅
cot ∅=4/7
so
1+(4/7)²=csc² ∅
csc² ∅=1+(16/49)
csc² ∅=(65/49)
csc ∅=(√65)/7

remember that
csc ∅=1/sin ∅
sin ∅=1/csc ∅------> sin ∅=7/√65-----> sin ∅=(7√65)/65

the answer is
the best identity to find sin ∅ is
1+cot ²∅=csc² ∅

6 0
3 years ago
Read 2 more answers
From 99° to 70°f what is the percent decrease
SSSSS [86.1K]

Answer:

should be -29.29 %

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Una torre de 28.2 m de altura esta situada a la orilla de un rio, desde lo alto del edificio el ángulo de depresión a la orilla
Svet_ta [14]

Answer:

El ancho del río es 59.9 metros.

Step-by-step explanation:

El ancho del río lo podemos calcular con la siguiente relación trigonométrica asumiendo que la torre forma un triángulo rectángulo con el río:

tan(\theta) = \frac{CO}{CA}

En donde:

CA: es el cateto adyacente = Altura de la torre = 28.2 m

CO: es el cateto opuesto = ancho del río =?

θ: es el ángulo adyacente a CA

Dado que el ángulo de depresión (25.2°) está ubicado fuera de la parte superior de la hipotenusa del triángulo que forma la torre con la orilla opuesta del río, debemos calcular el ángulo interno (θ) como sigue:

\theta = (90 - 25.2)^{\circ} = 64.8 ^{\circ}

Ahora, el ancho del río es:

CO = tan(\alpha)*CA = tan(64.8)*28.2 = 59.9 m

Por lo tanto, el ancho del río es 59.9 metros.

Espero que te sea de utilidad!                  

4 0
3 years ago
Aratati ca A=ab+ba-aa-bb este pătrat perfect DAU FUNDA PLZZZZ
Nataly [62]

Answer:

Aratati ca numarul A=ab+ba-aa-bb este patrat perfect ( deasupra la ab ba aa bb este o linie orizontala) b)determinati nr ab astfel incat B=ab+5ab-126 sa fie patrat perfect ( deasupra la ab 5ab este o linie orizontala) c) aratati ca 25=3²+4² si 625=7²+24²

Step-by-step explanation:

english?

5 0
4 years ago
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