2 years ago

I need help with this math problem please!

Mathematics

1 answer:

spin [16.1K]2 years ago

7 0

D, because (5+y) and 8 are factors, and within (5+y), 5 and y are terms.

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F(x)=-5x^2+2x-1. Find: f(-a)

lyudmila [28]

Answer:

$f(x) = 5 {x}^{2} + 2x - 1 \\ f( - a) = 5 {( - a)}^{2} + 2 \times - a - 1 \\ = 5 {a}^{2} - 2a - 1 \\ thank \: you$

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2 years ago

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find 40% of 60 using two different strageties, one of which must include a pictorial model or digram?pls help

igor_vitrenko [27]

One way would be to convert 40% into a fraction and multiply.

40% = 2/5

2/5 * 60 = 24

Drawing a diagram could involve drawing a whole (etc. a circle) and dividing it into fifths, then shading 2 of it with each section representing 12. Hope this helps!<span />

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2 years ago

What is the result ?

yuradex [85]

Answer:

5+0=5 5+1+0=6 56

4+2=6 3+4+2=9 69

2+1=3 6+2+1=39

Step-by-step explanation:

there are 2 ways

3 0

3 years ago

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PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

777dan777 [17]

Answer: (C) 13,120

<u>Step-by-step explanation:</u>

Given the sequence {4, 12, 36, 108, ... , 8748} we know that the first term (a) is 4 and the ratio (r) is $\dfrac{12}{4}=3$

Input the values above into the Sum formula:

$S_n=\dfrac{a(1-r^n)}{1-r}\\\\S_8=\dfrac{4(1-3^8)}{1-3}\\\\.\quad=\dfrac{4(1-6561)}{-2}\\\\.\quad=\dfrac{4(-6560)}{-2}\\\\.\quad=-2(-6560)\\\\.\quad=13,120$

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3 years ago

T increased by r the answer

erma4kov [3.2K]

So r is a number that when you add to t it will increase so its

T + r

8 0

3 years ago

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