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3 years ago

If you get a jacket thast 86 dollars and you get 15% off and another 5% off how much is it

Mathematics

1 answer:

Butoxors [25]3 years ago

3 0

Answer:

17.20 dollars

Step-by-step explanation:

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AB is a line of symmetry of this arrow shape. A)Calculate The Perimeter of the shape.

maw [93]

Answer:

A)58cm

B) $h=4\sqrt{5}cm$

C)125.55square cm

Step-by-step explanation:

AB is a line is symmetry

Total length of left half part=12cm+9cm+3cm+5cm

Total length of left half part=29 cm

Length of left half part=Length of right half part

Therefore, length of right half part=29 cm

A) Perimeter of the shape=29cm+29cm=58cm

Pythagoras theorem

$(Hypotenuse)^2=(Base)^2+(Perpendicular\;side)^2$

Hypotenuse=12 cm

Base=5+3=8cm

In triangle ADC

Now, using Pythagoras theorem

$(12)^2=8^2+h^2$

$144=64+h^2$

$h^2=144-64=80$

$h=\sqrt{80}=4\sqrt{5}cm$

Area of shape=Area of triangle+ area of rectangle

Area of shape= $\frac{1}{2}\times b\times h+l\times b$

Where l=9cm

breadth=3+3=6cm

h= $4\sqt{5}cm$

base=2(5)+3(2)=16cm

Area of shape= $\frac{1}{2}\times\times 16\times 4\sqrt{5}+9\times 6$

Area of shape=125.55 square cm

7 0

3 years ago

The measure of ∠BCD is 120°. The measure of ∠ABC is 85°. What is measure of ∠BAC?

Ivanshal [37]

First of all, triangles angles add up to 180 degrees.

BCD=120. To find BCA subtract 180-120 to get 60 degrees.

We know what ABC is, it equals 85, so far we have 2 angles.

Lets add them up, 85+60=145

Since the angles must add up to equal 180 we're going to subtract 180-145

Which equals 35, BAC=35 degrees.

-Seth

6 0

3 years ago

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3w squared-8w+4=0 (solving quadartc equations by factoring)

deff fn [24]

$3w^2-8w+4=0\\\\3w^2-6w-2w+4=0\\\\3w(w-2)-2(w-2)=0\\\\(w-2)(3w-2)=0\\\\w-2=0\ \ \ or\ \ \ 3w-2=0\\\\w=2\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ w= \frac{2}{3}$

3 0

3 years ago

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Lucy went to Chik Fil A. She bought a meal that cost $9.27. If the tax rate is 6% how

borishaifa [10]

Answer:

$9.83

Step-by-step explanation:

Tax= 6% of 9.27

$=\frac{6}{100}*9.27\\\\=\frac{55.62}{100}\\\\=0.5562$

Amount paid by her = 9.27 + 0.5562 = 9.8262 = $9.83

4 0

4 years ago

Please solve x^2-8x=8

Varvara68 [4.7K]

Answer:4^2-(8x1)=8

Step-by-step explanation:

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3 years ago

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