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3 years ago

HELP ME PLEASE

Mathematics

1 answer:

Gnoma [55]3 years ago

8 0

Answer:

1) a1 = -5, a(n) = a(n-1) + 2

Step-by-step explanation:

The explicit formula for an arithmetic sequence can be written ...

an = a1 +d(n -1)

The corresponding recursive formula is ...

a(1) = a1, a(n) = a(n -1) +d

Comparing the above explicit formula to the one you're given, you see that ...

a1 = -5, d = 2

Using these values in the recursive formula gives you ...

a(1) = -5, a(n) = a(n-1) +2

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sweet [91]

The answer is 61.

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13 + 8 = 21
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3 years ago

Help, i know the answer but i don’t know how to do the work

Diano4ka-milaya [45]

Answer:

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$

Simplifying each radical before combining them.

$\sqrt{45t}$

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= $\sqrt{9}$ × $\sqrt{5t}$ = 3 $\sqrt{5t}$

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$\sqrt{125t}$

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Hence

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4 years ago

What is the answer to -1/3x + 1 = -7

QveST [7]

Answer: -7

Step-by-step explanation:

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4 years ago

Use linear combination to solve this problem. show your work.<br><br> 3x + 2y = -4<br> 4x - y = 13

pshichka [43]

Answer:

The solution of the system of equations is the point $(2,-5)$

Step-by-step explanation:

we have

$3x+2y=-4$ -----> equation A

$4x-y=13$ -----> equation B

Multiply the equation B by 2 both sides

$2*(4x-y)=2*13$

$8x-2y=26$ ------> equation C

Adds equation A and equation C

$3x+2y=-4\\8x-2y=26\\----------\\3x+8x=-4+26\\11x=22\\x=2$

Find the value of y

Substitute the value of x in equation A

$3(2)+2y=-4$

$2y=-4-6$

$y=-10/2=-5$

The solution of the system of equations is the point $(2,-5)$

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3 years ago

Imagine having 20 currency notes , consisting of $5 bills , and $10 bills that total $125. Write a system of equations to descri

Maurinko [17]

X-the $5 bills
y-the $10 bills

x+y=20
5x+10y=120

It's a system.

7 0

4 years ago

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