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-BARSIC- [3]
3 years ago
12

Which expressions are equivalent to -3(t - 7 + 5t + 8)?

Mathematics
1 answer:
krok68 [10]3 years ago
3 0

Answer: It's B, C, F Hope it helps!

Step-by-step explanation: -3(t-7+5t+8) collect like terms -3(6t+1)

which would give you -18t-3

It C to because 1. expand by distributing terms -(18t+9)+6

2. Remove parentheses -18t-9+6

3. Collect like terms -18t+(-9+6) simplify and it would give you -18t+3  it also F because I collect like terms (-3t-15t)+(21-24) and you simplify and that would give you -18t-3 as well can you make me brainliest bye!

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A) The cosine rule can be used to find the value of x in the triangle below.
BartSMP [9]

Answer:

see explanation

Step-by-step explanation:

(a)

(the side required )² = sum of squares of other 2 sides - ( 2 × product of other 2 sides and cos(angle opposite side required ) )

x² = 12² + 15² - (2 × 12 × 15 × cos71°)

(b)

x² = 144 + 225 - 360cos71°

   = 369 - 360cos71° ( take square root of both sides )

x = \sqrt{369-360cos71}

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5 0
2 years ago
The number 1000 has how many factors of 10
melomori [17]

Answer:

<h2>10³ = 1000</h2>

<h3>∴ 1000 has 3 factors of 10.</h3>

Hope it will be helpful!!!

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8 0
3 years ago
If s varies inversely as t and s = 8 when t = 5, find the equation that connects s and t.
lubasha [3.4K]

the answer is (a) s= 40/t

3 0
3 years ago
Sucesión II: 3, 7, 11, 15, 19, 23 ... ¿Cual es la expresión algebraica que la genera? * x=4n-2 x= 4n-1 x=3n-2
LenaWriter [7]

Responder:

4n-1

Explicación paso a paso:

Dada la secuencia

3, 7, 11, 15, 19, 23 ..

El enésimo término si la secuencia se expresa como;

Tn = una + (n-1) d

a es el primer término = 3

n es el número de términos

d es la diferencia común = 7-3 = 11-7

d = 4

Sustituir

Tn = 3+ (n-1) (4)

Tn = 3 + 4n-4

Tn = 4n-1

Por lo tanto, el enésimo término de la secuencia es 4n-1

8 0
3 years ago
Which of these r-values represents the weakest correlation<br> A 0.6<br> B 0.3<br> C 0.5<br> D 0.4
madreJ [45]

Answer:

B

Step-by-step explanation:

0.3 is weakest

7 0
3 years ago
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