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3 years ago

The figure above is rotated 270 counterclockwise about the origin what are the coordinates of w

Mathematics

1 answer:

Lubov Fominskaja [6]3 years ago

3 0

Answer:

i need more information

Step-by-step explanation:

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Diane has $1.85 in dimes and nickels. she has a total of 23 coins. how many of each kind does she have? how many nickles? how ma

amm1812

The two equations for the set up are:
x+y=23 where x is the number of dimes and y is the number of nickles
10x+5y=185
Now you solve by elimination and substitution.
Multiply your first equation by -5 and add the two equations together
-5x-5y=-115
+10x+5y=185
-------------------
5x=70
x=14

Substitute that into your original equation:
14+y=23
y=9

So you have 14 dimes and 9 nickles.

Hope this helps

5 0

3 years ago

If a 12 hour analog clock reads 8:00, what is the degree measure of the smaller angle formed by the minute and hour hands

ANTONII [103]

Answer:

Its probably 240

Step-by-step explanation:

If you divide 360 into 12 parts, you get 30 for each part, 8x30=240, so the answer is 240º I think, dont take my word for it though

3 0

3 years ago

Find the the slope of the line passing through points 2,2 and -1,0

scZoUnD [109]

For a given function, slope is defined as the change in outputs, or y-values divided by the change in inputs, or x-values. In essence the slope asks "For a given change in x, how much does y change?" or even more simply: "How steep is the graph of this function?". This can be represented mathematically by the formula: $slope=m=\frac{rise}{run}=\frac{\Delta y}{\Delta x}-\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

Substituting our known vlaues we have:
$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$
$m=\frac{2-0}{2-(-1)}$
$m=\frac{2}{3}$

7 0

3 years ago

Tan^2x+sec^2x=1 for all values of x. <br> true or false?

amid [387]

This is not true.

$\tan^2x+\sec^2x=\dfrac{\sin^2x}{\cos^2x}+\dfrac1{\cos^2x}=\dfrac{1-\cos^2x+1}{\cos^2x}=2\sec^2x-1$

$2\sec^2x-1=1\implies\sec^2x=1\implies\sec x=\pm1\implies x=n\pi$

where is $n$ is any integer. So suppose we pick some value of $x$ other than these, say $x=\dfrac\pi4$ . Then

$\tan^2\dfrac\pi4+\sec^2\dfrac\pi4=1+2=3\neq1$

5 0

3 years ago

Read 2 more answers

A store has apples on sale for $21.00 for 6 pounds. If an apple is approximately 5 ounces, how many apples can you buy for $126.

fgiga [73]

Answer:

115 apples

Step-by-step

6 pounds of apple = $21.00

Cost per pound :$21.00 / 6 = $3.5 per Pound 1 pound = 16 ounces16 ounces cost $3.51 ounce = $3.5 / 16 = $0.218755 ounces will cost :5 * 0.21875 = $1.09375Number of 5 ounce apple that can be purchased with $126$126 / $1.09375= 115.2Approximately 115 apples

6 0

2 years ago

Read 2 more answers