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quester [9]
2 years ago
13

7. Allan went shopping for stationery. He bought x pens at $1.75 each and y books at

Mathematics
1 answer:
timurjin [86]2 years ago
4 0

Answer:

$4.25

Step-by-step explanation:

<em><u>x </u></em><em><u>pens=</u></em><em><u>$</u></em><em><u>1</u></em><em><u>.</u></em><em><u>7</u></em><em><u>5</u></em>

<em>y </em><em>pens </em><em>=</em><em>$</em><em>2</em><em>.</em><em>5</em><em>0</em>

<em>Now,</em>

<em>in </em><em>the </em><em>ter</em><em>m</em><em>s </em><em>of </em><em>x </em><em>and </em><em>y </em><em>,</em>

<em>Alan </em><em>spend </em><em>altogether</em><em>=</em><em>1</em><em>.</em><em>7</em><em>5</em><em> </em><em>+</em><em>2</em><em>.</em><em>5</em><em>0</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em>$</em><em>4</em><em>.</em><em>2</em><em>5</em>

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Jane can type 150 words in 2 minutes. How many<br> words can she type in 5 minutes?
Masteriza [31]
I believe about 750 this is because of you multiply 150 and 5 you get your answer 750 because each 2 minutes she types is 150 and although you can find your average I just add the average 5 times this would be an easier way!!!
8 0
2 years ago
Find the missing length the triangles are similar.
ch4aika [34]

Answer:

Step-by-step explanation:

The missing length is 13 because,

Lets say the top triangle is A and the bottom triangle is B.

Triangle A gives us the side GF, and Triangle B gives us the sides TU and ST. Since the triangles are similar(as stated in the problem), we can pair 2 sides GF(A) and TU(B) which is 11:22.(one way I usually figure which sides are similar is by first- matching the hypotenuse, then checking which of the remaining two is longer.. if that made any sense). You can see that their relationship is x2 or /2 (In another word, from A to B is multiplication- ex: 11 * 2 is 22, and from B to A is division- ex 22/2 is 11.) Since the missing number is the hypotenuse of triangle A and you know the Hypotenuse of triangle B all you have to do is divide side TS by 2 to get side SF. So the missing side is 13.

Answer: 13

8 0
3 years ago
Write a rule for the linear function with the following description: the graph contains the points (3,-2) and (3,0),
Maslowich

Answer:

x - 3 = 0

Step-by-step explanation:

You can realise it plotting the points.

Or you can use : ( x - x1 ) / ( y - y1 ) = ( x1 - x2 ) / ( y1 - y2 )

where ( x1 , y1 ) and ( x2 , y2 ) are the given points.

3 0
2 years ago
Consider x^2 + (b/a)x = (-c/a). Which variable cannot have a value of zero? Justify your answer.
GREYUIT [131]
The answer is C because if something is divided by zero, it is undefined.
5 0
3 years ago
Transform the given quadratic function into vertex form f(x) = quadratic function into vertex form f(x) = quadratic function int
melisa1 [442]

Answer:

Vertex form: f(x) =(x +\frac{7}{2})^2 -\frac{53}{4}

The vertex is (-\frac{7}{2},-\frac{53}{4})

Step-by-step explanation:

For a general quadratic function the form is:

ax ^ 2 + bx + c

For the function

f(x) = x ^ 2+ 7x -1

The values of the coefficients for the function are the following: a = 1, b =7, c = -1

Take the value of b and divide it by 2. Then, the result obtained squares it.

\frac{b}{2}= \frac{7}{2}

(\frac{b}{2})^2=(\frac{7}{2})^2=\frac{49}{4}

Add and subtract \frac{49}{4}

f(x) = (x ^ 2 +7x +\frac{49}{4}) -\frac{49}{4}- 1

Write the expression of the form

f(x) = (x+\frac{b}{2})^2 +k

f(x) =(x +\frac{7}{2})^2 -\frac{53}{4}

The vertex is (-\frac{7}{2},-\frac{53}{4})

6 0
3 years ago
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