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3 years ago

Im really confused with this one.

Mathematics

2 answers:

nexus9112 [7]3 years ago

5 0

The expression 2x means 2 times x.
It also means x plus x.

These are appropriate descriptions:

2: The expression represents 5 plus 2 times x.
3: The expression represents 5 plus x plus x.
5: The expression represents the sum of 5 and 2x.

liberstina [14]3 years ago

4 0

The answers are the second, fifth, and sixth.

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A loan shark lends you $50 at 3% compound interest per week (this is a weekly, not an annual rate.) Round your answers to the ne

shutvik [7]

Answer:

(a) Amount owed after 2 years is $ 1081.54

(b) The shark's vig is $ 1031.54

Step-by-step explanation:

(a)

The amount on a principal, P, after a period, T, at a compound interest, R, is given by

$A = P\left(1+\dfrac{R}{100}\right)^T$

From the question,

P = $ 50

R = 3% per week

T = number of weeks in 2 years = 2 × 52 = 104 (Assuming 52 weeks for each year)

$A = \$\,50\left(1+\dfrac{3}{100}\right)^{104} = \$\,50(1.03)^{104} = \$\,1081.54$

(b)

The shark's vig = $ 1081.54 - $ 50 = $ 1031.54

5 0

3 years ago

Evaluate the expression: 2 ⋅ 6^2

irina [24]

Answer:

Step-by-step explanation:

6 x 6 x 2 = 72

6 0

3 years ago

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A chemical company makes two brands of antifreeze. The first brand is 65% pure antifreeze, and the second brand is 90% pure anti

Brums [2.3K]

$\bf \begin{array}{lcccl} &\stackrel{solution}{gallons}&\stackrel{\textit{\% of }}{antifreeze}&\stackrel{\textit{gallons of }}{antifreeze}\\ \cline{2-4}&\\ \textit{1st brand}&x&0.65&0.65x\\ \textit{2nd brand}&y&0.90&0.9y\\ \cline{2-4}&\\ mixture&40&0.8&32 \end{array}~\hfill \to \begin{cases} x+y&=40\\ \boxed{x}=40-y\\ \cline{1-2} 0.65x+0.9y&=32 \end{cases} \\\\[-0.35em] ~\dotfill$

$\bf \stackrel{\textit{substituting in the 2nd equation}}{0.65\left( \boxed{40-y} \right)+0.9y=32}\implies 26-0.65y+0.9y=32 \\\\\\ 26+0.25y=32\implies 0.25y=6\implies y=\cfrac{6}{0.25}\implies \blacktriangleright y=24 \blacktriangleleft \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{since we know that}}{x=40-y\implies }x=40-24\implies \blacktriangleright x=16 \blacktriangleleft$

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3 years ago

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A study with a sample that is very different from the population is

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F. An experiment because they are conducting a study and experimenting with a sample different from what is known

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3 years ago

What is the exponent of 50

german

2×5^{2} if you don't understand its 2 times 5 to the second power.

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3 years ago