3 years ago

Calculate each percent using your knowledge of benchmark percents

Mathematics

1 answer:

quester [9]3 years ago

5 0

Check the picture below tell me if you understand what I did.

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5x+10 resultado cuál es?

larisa [96]

Answer:

What is x? I will tell you the answer in the comments!! Thank you!!

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3 years ago

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a car dealer earns a 4% Commission on all cars sold last month he earned $7,000 in commission he wants to earn $8,000 in commiss

Xelga [282]

Divide 8000 by .04 and thats your answer

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3 years ago

0. 7 =?<br> the decimal is repeating and need to change to a fraction

MAXImum [283]

Answer:

7/9 or 7/10

Step-by-step explanation:

im not sure it depends on the bottom part

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3 years ago

a student found the slope of a line that passes through the points (1,14) and (3,4) to be 5. what mistake did she make?

mariarad [96]

$x_{1}=1$
$x_{2}= 3$
$y_{1} =14$
$y_{2}=4$
$Slope= \frac{rise}{run} = \frac{ y_{2} - y_{1} }{ x_{2} - x_{1} } = \frac{4-14}{3-1} = \frac{-10}{2} =-5$

answer: The student flipped the y values

3 0

3 years ago

Explain whether the following given sets are closed under addition:

Ivan

Answer:

Step-by-step explanation:

a) Yes.

$\forall\ a,b\ \in\ B,\ a+b\in B\ (since\ 0+0=0)$

b) Yes

$W=\{0,1,2,3,..,\}\ (whole\ numbers)\\\forall\ a,b\ \in\ 3W,\ a+b\in 3W\\since:\\a\ \in\ 3W \Longrightarrow\ \exists\ k_1\in W | a=3*k_1\\\\b\ \in\ 3W \Longrightarrow\ \exists\ k_2\in W | b=3*k_2\\\\a+b=3*k_1+3*k_2=3*(k_1+k_2) \in 3W\\$

c) Yes

$\forall n\ \in\ \mathbb{N}: \Longrightarrow\ n+1 \in\ \mathbb{N}\\$

d) No

$3\in V , 3+3=6\notin V\\$

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3 years ago