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Bond [772]
3 years ago
6

Holly and her two best friends go to dinner there total bill is 31.84 they use a coupon for 15% off the total if they split the

bill evenly how much money will each person owe
Mathematics
1 answer:
const2013 [10]3 years ago
7 0
15% of 31.84 = 4.776
21.84 - 4.776 = 27.064
27.064 ÷ 3 = $9.021 per person.
Hope it helps!
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1. A right angled triangle has two shorter sides and one is twice as long as the other. The hypotenuse is 25 cm long. What are t
Semenov [28]

Step-by-step explanation:

The hypotenuse of a right-angled triangle = 25 cm

One side is twice as long as the other.

Let the other side is x.

First side = 2x

Using Pythagoras theorem to find the lengths of the shorter sides.

x^2+(2x)^2=25^2\\\\x^2+4x^2=625\\\\5x^2=625\\\\x^2=125\\\\x=11.18\ cm

So, the other side = 11.18 cm

First side = 2(11.18) = 22.36 cm

So, the lengths of the shorter sides are 11.18 cm and 22.36 cm.

7 0
3 years ago
Simplify the expression. -3x + 6 + -4x + 2
irina [24]

Answer:

-x +8

Step-by-step explanation:

3x + 6 + -4x + 2

Combine like terms

3x-4x +6+2

-x +8

4 0
3 years ago
Which set of side lengths could be the sides of a triangle?
nydimaria [60]
The right answer is probably C
4 0
4 years ago
Someone please do this problem for me.​
hoa [83]

Given:

$\frac{6}{a^{2}-7 a+6}, \frac{3}{a^{2}-36}

To find:

The LCD of the fractions.

Solution:

LCD means least common denominator.

Let us find the least common multiplier for the denominator.

The denominators are \left(a^{2}-7 a+a\right),\left(a^{2}-36\right).

Factor \left(a^{2}-7 a+a\right):

a^{2}-7 a+6=\left(a^{2}-a\right)+(-6 a+6)

Take a common in first 2 terms and -6 common in next two terms.

                  =a(a-1)-6(a-1)

Take out common factor (a - 1).

\left(a^{2}-7 a+a\right)=(a-1)(a-6) ------------- (1)

Factor \left(a^{2}-36\right):

\left(a^{2}-36\right)=\left(a^{2}-6^2\right)

Using identity: (a^2-b^2)=(a-b)(a+b)

\left(a^{2}-36\right)=(a-6)(a+6)  ------------- (1)

From (1) and (2),

LCM of \left(a^{2}-7 a+a\right),\left(a^{2}-36\right)=(a-1)(a-6)(a+6)

Therefore LCD is (a - 1)(a - 6)(a + 6).

5 0
3 years ago
Please help Asap
daser333 [38]
The answer is 8. :).
5 0
3 years ago
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