An electronics store had a special sale on two different models of calculators. the more high-tech model sold for $33.02 and
the older model sold for $18.55. all together, 28 calculators were sold. total sales came out to $736.45. which system of
equations can be used to determine how many high-tech models were sold, x, and how many older models were sold, y?
a.
33.02x + 18.55y = 736.45
x-y=28
b.
33.02x + 18.55y = 28
x + y = 736.45
c.
33.02x + 18.55y = 736.45
x + y = 28
d.
18.55y = 33.02% + 28
x + y = 736.45
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a
dx
4: 48 pm

45

step-by-step explanation:

30+15

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet

if she was to only spend a dollar she can get 1lb

step-by-step explanation:

answer:   the paragraph proof is mentioned below.

step-by-step explanation:

given: in a δxwy where

such that, ∠wzx ≅ ∠yzx and zw≅zy

we have to prove that: segment zx is a perpendicular bisector of segment wy.

prove: since, zw≅zy ⇒ ∠wzy is a supplementary angle.

then, ∠wzy= 180°

⇒∠wzx + ∠yzx = 180° ( because xz divides ∠wzy into two parts)

but, ∠wzx ≅ ∠yzx ( given)

⇒∠wzy+∠wzy=180° ( by substitution)

⇒2∠wzy=180°

⇒∠wzy=90°

⇒∠wzy=∠yzx =90°

therefore, xz⊥wy where wz=zy

⇒zx is a perpendicular bisector of wy.