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3 years ago

Simplify this expression.

Mathematics

1 answer:

amm18123 years ago

7 0

Answer: 0.88

Step-by-step explanation:

Okay -5.37 + 8.14 = 2.77 ( you can simply plug this into the calculator or you could switch the problem around so it’s 8.14 - 5.37, either way you’ll get 2.77)

And then you take 2.77 -1.89 = 0.88

So 0.88 is your answer

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A recipe calls for 34 cup of sugar for every 12 teaspoon of cinnamon. What is the unit rate in teaspoons of cinnamon per cup of

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Answer:

6/17 tsp cinnamon per cup of sugar

Step-by-step explanation:

12/34 then simplify the fraction

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3 years ago

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The loudness, L, measured in decibels (Db), of a sound intensity, I, measured in watts per square meter, is defined as L = 10 lo

Inessa [10]

Answer:

50 Db

Step-by-step explanation:

we know that

The loudness in decibels is given by the formula

$L = 10log(\frac{I}{I_0})$

where

I = sound intensity in watts per square meter (Watts/m^2)

I₀ = reference intensity, = 10^(-12) Watts/m^2

For I=10^(-7) Watts/m^2

substitute in the formula above and solve for L

$L = 10log(\frac{10^{-7} }{10^{-12}})$

$L = 10log(10^{5})$

$L = 10 (5)=50\ Db$

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3 years ago

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(25 POINTS) Terry realized that 25% of his money was $12.50. He made a double number line to represent this. What number would g

DedPeter [7]

Answer:

you would double it A 0 12.50 25.00

B 0 25 50

Step-by-step explanation:

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3 years ago

Please help solve with steps: Order of operation with integers.<br><br> 6 (divide by ) (-3) - (-9)

andreev551 [17]

Answer:

Step-by-step explanation:

Use PEMDAS:

P Parentheses first

E Exponents

MD Multiplication and Division

AS Addition and Subtraction

$6:(-3)-(-9)$ <em>first - division</em>

$=-2+9$ <em>use commutative property a + b = b + a</em>

$=9+(-2)=9-2=7$

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3 years ago

There are white, blue, and red boats in a marina. Two-thirds of the boats in the marina are white, 4 7 of the remaining boats ar

Aleksandr-060686 [28]

Answer: the number of boats that are in the marina is 105.

Step-by-step explanation:

Let x represent the number of boats that are in the marina.

Two-thirds of the boats in the marina are white. It means that the number of white boats in the marina is

2/3 × x = 2x/3

The remaining number of boats will be

x - 2x/3 = x/3

4/7 of the remaining boats are blue. It means that the number of boats that are blue is

4/7 × x/3 = 4x/21

The number of boats left would be

x/3 - 4x/21 = 3x/21

If there are 15 red boats, it means that

3x/21 = 15

3x = 21 × 15 = 315

x = 315/3

x = 105

3 0

3 years ago