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3 years ago

PLEASE help PLEASE

Mathematics

1 answer:

Allushta [10]3 years ago

7 0

I think 100% profit means she got the gloves for free so all her revenue was profit. That can't be right. Let's assume 'profit on the cost' means a 100% markup, meaning she sold the gloves for £8.

That means she sold the skirt for £40.

She made 20% profit on the total cost t so

1.2 t = 48

t = 48/1.2 = 40

Since she spent £4 on the gloves that means she spent £36 on the skirt she sold for £40.

So she made £4 on a cost of £36 for a percentage of 1/9=.11111...

Answer: 11.1%

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ΔABC and ΔDEF appear to be similar. Which set of measurements prove that the two triangles are similar?

Triss [41]

Answer:

Step-by-step explanation:

Similar triangles have congruent corresponding angles, and proportional corresponding sides.

The only angle given is angle A, which will correspond to angle D if the similarity statement is true. That is, angle D must be 35°. (Eliminates choice D)

The ratios of the given sides are AB:AC = 9:12 = 3:4. The corresponding sides would be DE:DF. (Eliminates choice A)

The remaining choices have side ratios of ...

B. DE : DF = 16 : 21 ≠ 3 : 4

C. DE : DF = 12 : 16 = 3 : 4

The set of measurements that would make ΔABC ~ ΔDEF is ...

DE = 12, DF = 16, and ∠D = 35°

5 0

2 years ago

The length of a rectangle is 7 more than the width. The area is 744 sqaure yards, find the length and width of the rectangle

Lina20 [59]

The length of rectangle is 31 yards and width is 24 yards.

Step-by-step explanation:

Given,

Width of rectangle = w

Length of rectangle = w+7

Area of rectangle = 744 square yards

Area = Length * width

$744=w(w+7)\\744=w^2+7w\\0=w^2+7w-744\\w^2+7w-744=0$

Factorizing the equation

$w^2+31w-24w-744=0\\w(w+31)-24(w+31)=0\\(w+31)(w-24)=0$

Either,

w+31=0, =>w= -31

Or,

w-24=0 =>w=24

As width cannot be negative, therefore,

Width = 24 yards

Length = w+7 = 24+7 = 31 yards

The length of rectangle is 31 yards and width is 24 yards.

Keywords: area, rectangle

Learn more about rectangles at:

#LearnwithBrainly

4 0

4 years ago

Triangle XYZ is translated by the rule (x + 1, y â 1) and then dilated by a scale factor of 4 centered at the origin. Which stat

marysya [2.9K]

Answer: Y and Y'' are congruent after the translation, but not after the dilation.

Step-by-step explanation:

We know that we generally prefer rigid transformations if want to create congruent images.

There are three basic kinds of rigid transformations:

1) rotation 2) reflection 3) translation

So, they all create congruent images.

But a dilation does not create congruent images because it creates an image of similar same shape as the original but not the same size.

Given : Triangle XYZ is translated and then dilated by a scale factor of 4 centered at the origin.

Then, the correct option is "Y and Y'' are congruent after the translation, but not after the dilation."

5 0

3 years ago

How do I solve an equation with different variables on both sides? here is an example.

Goryan [66]

Answer:

Step-by-step explanation:

9x - 2c = k

9x = k + 2c

x = (k + 2c)/9

8 0

3 years ago

Math hard me need helpp09

balu736 [363]

solution

original price = final price+ decrease percent × final price

original price = $90 +80% ×$90

original price = $90+80/100 ×$90

original price= $90+$72

original price= $162

3 0

3 years ago

PLEASE help PLEASE ​

PLEASE help PLEASE