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3 years ago

Please please please help me

Mathematics

2 answers:

Leviafan [203]3 years ago

8 0

The correct answer is 17 what i did was plug in 17 where ever you see x so x2 would be 17x2 an then plus the 5 gives u 39 3x 17x3=51 51+10=61 now add the totals 61 plus 39 gives u 100

Sergeeva-Olga [200]3 years ago

3 0

Answer:

D. 17

Step-by-step explanation:

1. Set up an equation (2x + 5) + (3x + 10) = 100

2. 2x + 3x= 5x and 5 + 10 = 15

3. The equation simplified 5x + 15 = 100

4. Move the 15 to the other side of the equation. 5x = 100 - 15

5. 5x = 85

6. Finally, divide 85/5

7. Our final answer is 17.

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If 3 to the power y = x then y = ?

Oksanka [162]

Answer:

$y=\log_3(x)$

Step-by-step explanation:

$3^y=x$

$\ln(3^y)=\ln(x)$

$y\ln(3)=\ln(x)$

$y=\frac{\displaystyle\ln(x)}{\displaystyle\ln(3)}$

but if

$f(x)=\frac{\displaystyle\ln(x)}{\displaystyle\ln(3)}$

then since

$f(3)=\frac{\displaystyle\ln(3)}{\displaystyle\ln(3)}=1$

$f(x)=\log_3(x)$

$y=\log_3(x)$

$3^y=x$

$\log_3(3^y)=\log_3(x)$

$y\log_3(3)=\log_3(x)$

$\text{but }\,\log_3(3)=1, \text{so,}$

$y=\log_3(x)$

6 0

3 years ago

F(n)=5.(-2)n-1<br>Complete the recursive formula of f(n).

Alex73 [517]

Answer:

a(n) = $(-2)(a_{n-1})$

$a_{1}=5$

Step-by-step explanation:

The given expression is in the form of the explicit formula of a geometric sequence.

f(n) = $a(r)^{n-1}$

Where 'a' = First term of the sequence

r = common ratio

Recursive formula of a geometric sequence is,

a(n) = $(a_{n-1}).(r)^{n-1}$

a(n) = $(-2)(a_{n-1})$

Where, $a_{1}=5$

So the recursive formula will be a(n) = $(-2)(a_{n-1})$

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3 years ago

Polynomials are written with the exponents of the terms in _____ order.

lozanna [386]

Answer: "...in descending order."

There you go.

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3 years ago

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Factor by using the perfect-square trinomial formula. <br><br> 100x^2+20x+1

a_sh-v [17]

To factor first multily 100 and 1 and get 100

then find what 2 numbers multiply to get 100 and add to get 20

the numbers are 10 and 10

so
split the center term up
100x^2+10x+10x+1
group
(100x^2+10x)+(10x+1)
undistribute
(10x)(10x+1)+(1)(10x+1)
undistribute/reverse distributive property
(10x+1)(10x+1)
(10x+1)^2

8 0

3 years ago

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Leanne and her family plan to attend a symphony at an orchestra hall. Before booking the tickets, Leanne checked a website where

lord [1]

Using proportions, it is found that Leanne's family should book their tickets at Section U1 to maximize their chances of having a "perfect" view.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

In this problem, the section with the highest proportion of perfect views should be chosen, hence:

pL1 = 57/90 = 0.633

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Leanne's family should book their tickets at Section U1 to maximize their chances of having a "perfect" view.

More can be learned about proportions at brainly.com/question/24372153

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2 years ago

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