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Mathematics

1 answer:

Rufina [12.5K]3 years ago

4 0

$160 + $12.50= $172.50
$215 - $172.5= $42.50
Your answer is $42.50

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2 in 1. Intermediate Algebra

laila [671]

So the first one is (7x)^(1/2) or square root of 7x minus - 5 square root all squared so

([7x^(1/2)]-[5^(1/2)]) times ([7x^(1/2)]-[5^(1/2)])

or 7x-(35x^(1/2))-5+(35x^(1/2)) or 7x-5

number 2
since 11 is 1/2 of 22 it can be written as

the square root of 3 or 3^(1/2)

5 0

4 years ago

I need help on these questions

My name is Ann [436]

When dividing fractions, we follow a rule called "Keep, change, flip"

Basically, you keep the first fraction the same, change the sign to a multiplication sign, and flip the second fraction.

2 = 2/1

7 * 1 + 6 = 13

2/1 * 7/13 = 14/13 = 1 1/13

2 divided by 1 6/7 = 1 1/13

3 3/5 = 18/5

2 1/4 = 9/4

18/5 * 4/9 = 72/45 = 8/5 = 1 3/5

3 3/5 divided by 2 1/4 = 1 3/5

4 1/2 = 9/2

2 3/8 = 19/8

9/2 * 8/19 = 72/38 = 36/19 = 1 17/19

4 1/2 divided by 2 3/8 = 1 17/19

3 0

3 years ago

What is the value of x?

Greeley [361]

Answer:

x = 75

Step-by-step explanation:

Similar triangles are triangles which have the same shape but not the same size. This means their angle measures are equal but their side lengths are not instead they are proportional. To solve, we will set up a proportion and solve.

A proportion is two equal ratios set equal to each other. We form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). Out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

$\frac{little}{big} =\frac{little}{big}$ .