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3 years ago

Find the sum of the following fractions. Explain how you determined the equivalent fractions and simply the sum. 2/5 + 3/4 =

Mathematics

1 answer:

butalik [34]3 years ago

8 0

Answer:

1 3/20

Explanation:

Find the lowest common denominator of both fractions, which is 20.

2/5 = x/20. Find the value of x and that is 8.

3/4 = y/20. Find the value of y and that is 15

Add 8/20 and 15/20 and that gives you 23/20. This is an improper fraction so divide 23 by 20, which is 1 3/20

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How many lines of symmetry does a rhombus that is not a square have?

adoni [48]

Look ar the picture.

Your answer: 2 lines of symmetry.

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3 years ago

Show work and solve for √ ( 5 x − 9 ) − 1 = x.

Mandarinka [93]

sqrt (5x - 9) - 1 = x

sqrt(5x - 9) = x + 1

Square both sides:_

5x - 9 = x^2 + 2x + 1

x^2 - 3x + 10 = 0

(x - 5)(x + 2) = 0

x = 5 or -2.

Lets look for for any extraneous solutions:-

x = 5 ; sqrt (5*5-9) - 1 = sqrt16 - 1 = 3 and x = 3 (right hand side of equation)

so x = 5 is a solution

x = -2: sqrt(5*-2 - 9) - 1 = sqrt (-19) - 1 and x = -2 so this is extraneous

Answer:- One solution x = 5

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3 years ago

Read 2 more answers

5/9 , 4/15 ,dan 3/5

vichka [17]

4/15, 5/9 and 3/5.

Hope this helps! :)

5 0

2 years ago

f^3+11g-4hf 3 +11g−4hf, cubed, plus, 11, g, minus, 4, h when f=3f=3f, equals, 3, g=2g=2g, equals, 2 and h=7h=7h, equals, 7.

Alik [6]

Given:

The expression is:

$f^3+11g-4h$

The given values are $f=3,\ g=2,\ h=7$ .

To find:

The value of the given expression for the given values.

Solution:

We have,

$f^3+11g-4h$

After substituting $f=3,\ g=2,\ h=7$ , we get

$f^3+11g-4h=(3)^3+11(2)-4(7)$

$f^3+11g-4h=27+22-28$

$f^3+11g-4h=49-28$

$f^3+11g-4h=21$

Therefore, the value of the given expression is 21.

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2 years ago

Find the lines of symmetry for each shape. Select all that apply.

nadezda [96]

4 lines of symmetry

c. n because it separates the shape on the middle

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2 years ago

Find the sum of the following fractions. Explain how you determined the equivalent fractions and simply the sum. 2/5 + 3/4 =​

Find the sum of the following fractions. Explain how you determined the equivalent fractions and simply the sum. 2/5 + 3/4 =