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2 years ago

Solve for x. −3(x+5)=−9

Mathematics

1 answer:

Dvinal [7]2 years ago

4 0

Answer:

x=-2

Step-by-step explanation:

Divide by -3 and solve for x

−3(x+5)/-3=−9/-3

x+5=3

x=3-5

x=-2

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actor x3 + x2 + x + 1 by grouping. What is the resulting expression? (x2)(x + 1) (x2 + 1)(x) (x2 + 1)(x + 1) (x3 + 1)(x + 1)

aksik [14]

So for this, factor x^3 + x^2 and x + 1 separately. Make sure that they have the same quantity on the inside: $x^2(x+1)+1(x+1)$

Now you can rewrite the expression as: $(x^2+1)(x+1)$ , which is your final answer.

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2 years ago

Luis wants to buy a skateboard that usually sells for $79.97. All merchandise is discounted by 12%. What is the total cost of th

Tju [1.3M]

Answer:

$74.8

Step-by-step explanation:

step 1: apply the discount to the price

12% = .12

$79.97 X .12 = $9.5964

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step 2: apply tax

$70.3736 X .0625 = $4.39835

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step3: round

$74.8

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2 years ago

PLEASE HELP!!!!!!! The equation r = 6t gives the number of albums released, r, by a record label over time in years, t. If you g

Pani-rosa [81]

Answer:

The answers are (8,48) and (13,78)

Step-by-step explanation:

t=x-axis or x

r=y-axis or y

52=6(9) → 52≠54 not correct

48=6(8)→48=48 correct

74=6(12)→74≠72 not correct

78=6(13)→78=78 correct

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2 years ago

Suppose that the local sales tax rate is 6.25% and you purchased a used car for $16,800. How much tax is paid?

laiz [17]

$\bf \begin{array}{|c|ll}
\cline{1-1}
\textit{a\% of b}\\
\cline{1-1}
\\
\left( \cfrac{a}{100} \right)\cdot b
\\\\
\cline{1-1}
\end{array}~\hspace{5em}\stackrel{\textit{6.25\% of 16800}}{\left( \cfrac{6.25}{100} \right)16800}\implies 1050$

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2 years ago

Martha invested a principal amount of $15,000 into a savings account that earns simple interest at a rate of 4.5% per year. How

lidiya [134]

Option A

The simple interest earned over 6 years is $ 4050

Solution:

Martha invested a principal amount of $15,000 into a savings account that earns simple interest at a rate of 4.5% per year

The formula for simple interest is given as:

$Simple\ Interest = \frac{p \times n \times r}{100}$

Where, "p" is the principal and "n" is the number of years and "r" is the rate of interest

From given,

p = 15000

r = 4.5 %

n = 6 years

Substituting the values we get,

$Simple\ Interest = \frac{15000 \times 4.5 \times 6}{100}\\\\Simple\ Interest = 150 \times 4.5 \times 6\\\\Simple\ Interest = 4050$

Thus simple interest earned over 6 years is $ 4050

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2 years ago