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4 years ago

Same question as last... 3 1/4 - 1 1/2=

1 answer:

4 0

I find it easier to convert both mixed numbers into improper fractions:

13/4 - 3/2. The LCD here is 4, so 13/4 stays as is, but 3/2 becomes 6/4.

Now subtract: 13/4 - 6/4 = 7/4 (answer)

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It takes five paper hangers five hours to hang five rolls of wallpaper. How long will it take 55 paper hangers to hang 55 rolls

expeople1 [14]

One paper hanger can hang one roll of wallpaper in FIVE HOURS.
So, 55 paper hangers can hang 55 rolls of wallpaper in FIVE HOURS.

8 0

3 years ago

How do you find (2+4i)^3 in rectangular form?

marshall27 [118]

$(2+4i)^3=8+48i-96-64i=-88-16i$

8 0

3 years ago

Read 2 more answers

Jim ate two slices of pizza, which is 25% of the pizza. How many slices were in the whole pizza?

alexdok [17]

Answer:

Step-by-step explanation:

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4 0

3 years ago

\Grace is 1.65 meters tall. At 3 p.m., she measures the length of a tree's shadow to be 25.35 meters. She stands 20.9 meters awa

Anika [276]

Grace's height and the tree's height are related by equivalent ratios

The height of the tree is 2.00 meters

Grace's height is given as:

$\mathbf{h = 1.65}$

When she measured the length of the tree's shadow, we have:

$\mathbf{l = 20.9m}$ --- the length of her shadow

$\mathbf{L = 25.35m}$ --- the length of the tree's shadow

The height (H) of the tree is calculated using the following equivalent ratio

$\mathbf{h:H = l:L}$

Substitute known values

$\mathbf{1.65:H = 20.9:25.35}$

Express as fractions

$\mathbf{\frac H{1.65} =\frac{25.35}{20.9}}$

Multiply both sides by 1.65

$\mathbf{H=\frac{25.35}{20.9} \times 1.65}$

Simplify

$\mathbf{H=2.00}$

Hence, the approximated height of the tree is 2.00 meters

Read more about equivalent ratios at:

brainly.com/question/13513438

5 0

3 years ago

Find the solution set for 8x - 3 = 2(x - 1/2)

KiRa [710]

Answer:

x = 1/3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define Equation

8x - 3 = 2(x - 1/2)

Step 2: Solve for x

Distributive 2: 8x - 3 = 2x - 1
Subtract 2x on both sides: 6x - 3 = -1
Add 3 to both sides: 6x = 2
Divide 6 on both sides: x = 1/3

4 0

3 years ago