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Aloiza [94]
3 years ago
9

Who invented crayons

Mathematics
2 answers:
galben [10]3 years ago
8 0
Alice Binney invented them.
charle [14.2K]3 years ago
8 0
Binney and Smith in 1902.
Hope I helped.
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In a pair of complementary angles, the measure of the larger angle is twice that of the smaller
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Answer: 60 degrees

Step-by-step explanation:

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Please sambady halp problem 5.
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Answer:

Boxes at the top are as follows

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Binomial. 2. 4x+2

Trinomial. 3.

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{5x}^{4}  +  {2x}^{3}  +  {12x}^{2}  + 135

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Leading coefficient: -7x

It's a little confusing to read but that should be everything. Sorry it's not organized better

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3 years ago
If f(3)=7 and f(1)=5, what is the function of f(x)?
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</span>\bf \begin{array}{ccccccccc}&#10;&&x_1&&y_1&&x_2&&y_2\\&#10;%  (a,b)&#10;&&(~ 3 &,& 7~) &#10;%  (c,d)&#10;&&(~ 1 &,& 5~)&#10;\end{array}&#10;\\\\\\&#10;% slope  = m&#10;slope =  m\implies &#10;\cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{5-7}{1-3}\implies \cfrac{-2}{-2}\implies 1&#10;\\\\\\&#10;% point-slope intercept&#10;\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-7=1(x-3)&#10;\\\\\\&#10;y-7=x-3\implies y=x+4<span>
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4 0
3 years ago
Charles drew a plan for a rectangular piece of material that hehe will use for a blanket. Three of the vertices are ​( -2.3 and
mote1985 [20]

Answer:

The coordinates of the fourth​ vertex is ( 2.1 , -3.6)

Step-by-step explanation:

Given:

The vertices are  ​( -2.3 and −3.6​), ​(−2.3​, and 2.2​), and ​(2.1​, and 2.2​).

To Find :

The fourth coordinate = ?

Solution:

Let (a,b) be the missing coordinates

Now let us use the the mid point formula and find the missing coordinate.

Let  ​( -2.3 ,−3.6​) be the point A

Let  ​​(−2.3​,2.2​) be the point B

Let  ​ ​(2.1​, 2.2​​) be the point C

The mid point of AC should be BD

Step 1: Finding The mid pint of AC

The mid pint of AC

(\frac{(-2.3+2.1)}{2} , \frac{(-3.6+2.2)}{2})

(\frac{(-0.2)}{2} , \frac{(-1.4)}{2})

(-0.1, -0.7)

Step 2: Lets Equate the midpoints'

The mid pint of BD

=>(\frac{(a+(-2.3))}{2} , \frac{(b+2.2)}{2}) =  (-0.1, -0.7)

\frac{(a+(-2.3))}{2} = -0.1

(a-2.3) = -0.1 \times 2

(a-2.3) = -0.2

a = -0.2 +2.3

a = 2.1

\frac{(b+2.2)}{2} = -0.7

(b+2.2)= -0.7 \times 2

(b+2.2)= -1.4

b= -1.4 -2.2

b = -3.6

8 0
3 years ago
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