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slamgirl [31]
3 years ago
7

Jenn bought 12 pens for $2 each and 6 pads of paper for $3 each. She was in a hurry and forgot to include the operations. She wr

ote 12 2 6 3 Place parentheses and operation signs to write an expression for the total cost of Jenn's purchase. How much did she spend?​
Mathematics
2 answers:
Margaret [11]3 years ago
6 0

(12 x 3) + (6 x 3) = 54

Step-by-step explanation:

First of all, the 12 penda should be multiplied by the amount each other them cost, and same goes with the pads of paper. After you multiplied both, you add them and there you have your answer.

Nadya [2.5K]3 years ago
5 0
(12 • 2) + (6 • 3)= 24+18= 42

In total she spent $42

Hope this helps!!
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What is 1/3 in decimal and percents and plz explain
nekit [7.7K]

Answer:

Decimal: 0.33

Percent: 33.33

Step-by-step explanation:

First 3/1 =0.33333333333 and so on

so put first to numbers 0.33

Second move decimal to right 2 places.

0.33 -> 03.3-> 33.0 or 33

There you go

6 0
3 years ago
What is the radius of a sphere with a volume of 1/6 pie
Yakvenalex [24]

Answer:

\large\boxed{the\ radius\ R=\dfrac{1}{2}}

Step-by-step explanation:

The formula of a volume of a sphere:

V=\dfrac{4}{3}\pi R^3

We have

V=\dfrac{1}{6}\pi

Substitute:

\dfrac{4}{3}\pi R^3=\dfrac{1}{6}\pi        <em>divide both sides by π</em>

\dfrac{4}{3}R^3=\dfrac{1}{6}          <em>multiply both sides by 3</em>

3\!\!\!\!\diagup^1\cdot\dfrac{4}{3\!\!\!\!\diagup_1}R^3=3\!\!\!\!\diagup^1\cdot\dfrac{1}{6\!\!\!\!\diagup_2}

4R^3=\dfrac{1}{2}          <em>divide both sides by 4</em>

R^3=\dfrac{1}{2}:4\\\\R^3=\dfrac{1}{2}\cdot\dfrac{1}{4}\\\\R^3=\dfrac{1}{8}\to R=\sqrt[3]{\dfrac{1}{8}}\\\\R=\dfrac{\sqrt1}{\sqrt8}\\\\R=\dfrac{1}{2}

3 0
3 years ago
Proving parallel lines with alternate exterior angles. given: &lt;1 = &lt;2 prove: p || q
horrorfan [7]

Answer:

1. <1 = <2  -   given

2. <1 and <3 are vertical <s  -   def of vertical <s

3. <1 = <3  -     vertical angles theorem

4. <3 = <2   - transitive property

5. p II  q      - converse of corresponding angles theorem

Step-by-step explanation:

edg 2020

7 0
3 years ago
F(0) = -5, f(4) = -3
Karolina [17]

Answer:

y = \frac{1}{2} x - 5

Step-by-step explanation:

Given f(0) = - 5 and f(4) = - 3 , then we have the coordinate points

(0, - 5) and (4, - 3)

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (0, - 5) and (x₂, y₂ ) = (4, - 3)

m = \frac{-3+5}{4-0} = \frac{2}{4} = \frac{1}{2}

The line crosses the y- axis at (0, - 5) ⇒ c = - 5

y = f(x) = \frac{1}{2} x - 5 ← equation of line

4 0
3 years ago
A rectangle field has an area of 1764 m^2. The width of the field is 13m more than the length. What is the perimeter of the fiel
mr_godi [17]

Answer:

Step-by-step explanation:

hello :

let y the length and  x the  width

A  the area and  P the perimeter

so : A= xy and P  = 2(x+y) ....y > x and x >0  ; y>0

xy = 1764 ...(1)

y = x +13....(2)  put this value in (1) : x (x+13) = 1764

x²+13x -1764 = 0   ...quadratic equation

calculate : Δ = b² -4ac   a =1  and  b =13  and

c = -1764

Δ = (13)² - 4(1)(-1764) = 169 +7056 = 7225=85²

X1 =(-b-√Δ)/2a =(-13-85)/2 < 0 refused  (x  >0)

X2 =(-b+√Δ)/2a =(-13+85)/2  = 72/2 = 36

so : x= 36  put this value in (2) : y = 36+13 = 49

the perimeter is : P  = 2(x+y)

                            P  = 2(36+49) = 170 m

6 0
3 years ago
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