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3 years ago

8

Did the old version of the instrument triangle have a different sound because of the open corner and different triangle shape of

isosceles triangle, instead of the equilateral triangle shape used today?

1 answer:

eduard3 years ago

7 0

Yes the old version has different sounds

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What is a1 of the arithmetic sequence for which a3=10 and a51=−182?

Furkat [3]

Answer:

a₁ = 18

Step-by-step explanation:

The n th term of an arithmetic sequence is

$a_{n}$ = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Given a₃ = 10 and a₅₁ = - 182, then

a₁ + 2d = 10 → (1)

a₁ + 50d = - 182 → (2)

Subtract (1) from (2) term by term to eliminate a₁

48d = - 192 ( divide both sides by 48 )

d = - 4

Substitute d = - 4 into (1) and evaluate for a₁

a₁ + 2(- 4) = 10

a₁ - 8 = 10 ( add 8 to both sides )

a₁ = 18

6 0

4 years ago

4a−2(3a+8)=6 what is the answer

Tcecarenko [31]

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{a = - 11}}}}}$

Step-by-step explanation:

$\sf{4a - 2(3a + 8) = 6}$

Distribute 2 through the parentheses

$\longrightarrow{ \sf{4a - 6a - 16 = 6}}$

Collect like terms

$\longrightarrow{ \sf{ - 2a - 16 = 6}}$

Move 16 to right hand side and change it's sign

$\longrightarrow{ \sf{ - 2a = 6 + 16}}$

Add the numbers: 6 and 16

$\longrightarrow{ \sf{ - 2a = 22}}$

Divide both sides by 2

$\longrightarrow{ \sf{ \frac{ - 2a}{ - 2} = \frac{22}{ - 2}}}$

Calculate

$\longrightarrow{ \sf{a = - 11}}$

Hope I helped !

Best regards! :D

4 0

4 years ago

Zigmanuir [339]

Okay nice amazing spectacular. What is brain list though? IM JUST TRYING TO EARN POINTS. Help a girl out. I’m just ranting cause I don’t know if this will even give me points.

3 0

3 years ago

A bakery uses 1.3 kilograms of flour each hour. How many kilograms of flour will the bakery use in 9 hours?

liq [111]

Answer:

Hello :))

Step-by-step explanation:

You should set this up as a proportion equation. 8.1kg /1hr =x/7hr You would cross multiply here and end up getting the equation... 1x=8.1*7 (x=56.7 kg)

Hope this helps! :))

3 0

4 years ago

If MNP = 107, what is NMQ

coldgirl [10]

NMQ is 123°. Set it equal to 360° and use congruence

8 0

3 years ago