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3 years ago

The percent decrease of an item that dropped in price from $50 to $43 is _____.

Mathematics

1 answer:

Stels [109]3 years ago

4 0

Hopefully I’m correct but I think it is 7% because 50 -43 equals 7%

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Solve similar triangles (advanced)

atroni [7]

Answer:

x = 24

Step-by-step explanation:

The corresponding sides of similar Δs are proportional.

ΔADE ~ ΔABC ⇒ $\frac{AD}{AB}$ = $\frac{DE}{BC}$ = $\frac{AE}{AC}$

AD = x + 8 ; DE = 8

AB = x ; BC = 6

$\frac{x+8}{x}$ = $\frac{8}{6}$ ⇔ 8x = 6(x + 8) ⇒ x = 24

7 0

2 years ago

Read 2 more answers

Pam needs 3 1/2 cups of sugar to make 50 cupcakes. A 5- pound bag of sugar coats $3.69. There are about 2 cups of sugar in a pou

Lorico [155]

Answer:

The answer to your question is $1.29

Step-by-step explanation:

Data

Total amount of cupcakes = 50

Total amount of sugar = 3 1/2 cups = 3.5 cups

Cost of 5-pound bag = $3.69

2 cups = 1 pound

Total cost = ?

Process

1.- Calculate the amount of pounds needed

2 cups ------------------ 1 pound

3.5 cups --------------- x

x = (3.5 x 1) / 2

x = 3.5 / 2

x = 1.75 pounds

2.- Calculate the price of 1.75 pounds

5 pounds -------------- $3.69

1.75 pounds ---------- x

x = (1.75 x 3.69)/5

x = 6.46/5

x = $1.29

3.- Conclusion

The cost of sugar to prepare 50 cupcakes is $1.29

3 0

3 years ago

Solve the following proportion Start Fraction x over 2 End Fraction equals Start Fraction 8 over 9 End Fraction (1 point) 144 0.

daser333 [38]

Answer:

1.78

Step-by-step explanation:

$\frac{x}{2} = \frac{8}{9}$

To solve for x we need to cross multiply it

We have = sign inbetween the fractions so we cross multiply it

9*x = 2* 8

9x = 16

Now we divide by 9 on both sides

$x= \frac{16}{9}$

so x= 1.7777777778

When we round to two decimal places then

x= 1.78

3 0

3 years ago

X^2+12x-20/3x-5 = x^2+8x+12/2x+3

Helga [31]

Answer:

In attachment I have answered this problem.

8 0

3 years ago

The hypotenuse of a 45 degrees -45 degrees -90 degrees triangle measures 10 root of 5 in.

juin [17]

Answer:

$5\sqrt{10}\ in$

Step-by-step explanation:

The question is

Find the measure of the legs

we know that

In a 45 degrees -45 degrees -90 degrees triangle, the measure of the legs are equal

Let

a ----> the measure of one leg

Applying the Pythagorean Theorem

$(10\sqrt{5})^2=a^2+a^2$

solve for a

$500=2a^2$

Divide by 2 both sides

$a^2=250$

$a=\sqrt{250}\ in$

Simplify

$a=5\sqrt{10}\ in$

3 0

3 years ago