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ad-work [718]
3 years ago
12

What is the answer to number 5&6?

Mathematics
2 answers:
Ierofanga [76]3 years ago
5 0
This is the answer I hope this will help you

Harman [31]3 years ago
3 0
For 1. 5^12
For 2. 3^9
Because 3 Means 3^1. It same thing
So 3^8 + 3^1= 3^9
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The sum of the first term of an ap is 240 and the sum of the next 4 term is 220 find the first term of the ap
Sindrei [870]

Answer:

The common difference is -5/4

T(n) = T(0)  - 5n/4,

where T(0) can be any number. d = -5/4

Assuming T(0) = 0, then first term

T(1) = 0 -5/4 = -5/4

Step-by-step explanation:

T(n) = T(0) + n*d

Let

S1 = T(x) + T(x+1) + T(x+2) + T(x+3) = 4*T(0) + (x + x+1 + x+2 + x+3)d = 240

S2 = T(x+4) + T(x+5) + T(x+6) + T(x+7) = 4*T(0) + (x+5 + x+6 + x+7 + x+8)d = 220

S2 - S1

= 4*T(0) + (x+5 + x+6 + x+7 + x+8)d - (4*T(0) + (x+1 + x+2 + x+3 + x+4)d)

= (5+6+7+8 - 1 -2-3-4)d

= 4(4)d

= 16d

Since S2=220,  S1 = 240

220-240 = 16d

d = -20/16 = -5/4

Since T(0) has not been defined, it could be any number.

7 0
3 years ago
5x−y=6 −2x+y=8 ​ combining equations
adoni [48]

Answer:

<h2>x=2</h2><h2>y=4</h2>

Step-by-step explanation:

5x-y=6

2x+y=8

add them up

7x=14

divide by 7 to get x

x=2

fit it into both equation

y=4

5 0
2 years ago
Read 2 more answers
I think I'm getting better. But just in case I still don't understand , what are decimals?
vagabundo [1.1K]
Decimals are a number and a dot and more numbers
8 0
3 years ago
Read 2 more answers
omar will donate up to $500 to charity. the money will be divided between two charities: the city of youth fund and educational
marshall27 [118]

Answer:

Please refer to the attached graph

Step-by-step explanation:

Knowing the following:

X = amount of money donated to the city youth fund

Y = amount of money donated to the educational growth foundation

We can write the statements in form of equations:  

"Will donate up to $500, the money will be divided between two charities"

(a) X + Y = \$ 500

"The amount donated to the educational growth foundation to be at least four times the amount donated to the city youth fund"

(b) Y \geq 4X

If we graph both equations we can see the area where both conditions are met (see graph attached)

Where the blue line is (a) and the red line is (b)

Shaded area represent all the possible solutions for the donations, for example:

X=100 and Y=400 or

X=50 and Y=200, etc.

6 0
3 years ago
G(X) = -3/2x<br> Find g(4)
a_sh-v [17]

substitute 4 as x in both sides of the equation

basically multiply -3/2 by 4


5 0
3 years ago
Read 2 more answers
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