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3 years ago

When can you write ratios as fractions?

2 answers:

7 0

Given a ratio of two integers, write it as a fraction
Given a ratio of two decimals, write it as a fraction
Given a ratio of two mixed numbers, write it as a fraction

Alja [10]3 years ago

6 0

Yes I ca-n YOU eritemul raționale as

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on the first day if the month, John counted his money and found he had $28.35. since then he has received an additional $17.26 f

barxatty [35]

Dude, this is simple addition. 28.35 + 17.26 = 45.61

He now has $45.61

8 0

3 years ago

What is the eighth term in the sequence x+3, - 2x^2 - 6x, 4x^3 +12x^2

Anastasy [175]

Answer:

$a_8=-128x^8-384x^7$

Step-by-step explanation:

The terms of the sequence are:

$x+3,-2x^2-6x,4x^3+12x^2,...$

We can rewrite the terms in factored form to get;

$x+3,-2x(x+3),4x^2(x+3),...$

We can see that the subsequent terms are obtained by multiplying the previous term by $-2x$ . This is called the common ratio.

Therefore the first term of this geometric sequence is $a_1=x+3$ and the common ratio is $r=-2x$ .

The nth term of a geometric sequence is given by: $a_n=a_1(r^{n-1})$ .

Let us substitute the first term, the common ratio, and $n=8$ to obtain:

$a_8=(x+3)(-2x)^{8-1}$

$a_8=(x+3)(-2x)^{7}$

$a_8=-128x^7(x+3)$

$a_8=-128x^8-384x^7$

3 0

3 years ago

What are the solutions to the following: 3x(2x + 4)(x + 9) = 0

wlad13 [49]

Answer:

x = 0 , − 2 , − 9

Step-by-step explanation:

7 0

3 years ago

These two polygons are similar.

Jet001 [13]

Answer:

$\huge\boxed{z=3}$

Step-by-step explanation:

If two polygons are similar, then corresponding sides are in proportion.

The corresponding sides:

4 → x

y → 15

3 → w

2 → 6

z → 9

therefore:

$\dfrac{z}{9}=\dfrac{2}{6}$ cross multiply

$(z)(6)=(9)(2)$

$6z=18$ divide both sides by 6

$z=3$

4 0

3 years ago

"If a = − 9 and b = − 6, show that (a−b) ≠ (b−a)."

denis-greek [22]

Answer:

Step-by-step explanation:

LHS a - b = -9 - (-6) = -9 +6 = -3

RHS b-a = -6 - (- 9) = -6 +9 = 3

as LHS not equal to RHS

a-b not equal to b-a

Thus proven

7 0

3 years ago