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SSSSS [86.1K]
3 years ago
5

Evaluate the expression 4 × (3 + 52) ÷ 2. Show your work.

Mathematics
2 answers:
My name is Ann [436]3 years ago
5 0

Answer:

\boxed{\boxed{\sf110} }

Step-by-step explanation:

\sf 4 \times (3 + 52) \div 2

\boxed{\sf Follow \: PEMDAS \: order\: of\: operations:}

\sf \bullet\: Parentheses

\sf \bullet\: Exponents

\sf \bullet \:Multiplication

\sf \bullet \:Division

\sf \bullet \:Addition

\sf \bullet \:Subtraction

______________________

\sf 1)\: Calculate \:within\: parentheses:

→ \sf \left(3+52\right)

→ \sf 3+52

→ \sf 55

_______________

\sf 2) \:Multiply\: and \:divide:

→ \sf 4\times \:55\div \:2

→ \sf 4\times \:55

→ \sf 220

→ \sf 220\div \:2

→ \sf 110

__________________________

STatiana [176]3 years ago
4 0

Answer:

110

Step-by-step explanation:

4 x ( 3+ 52) ÷ 2

4 x 55 ÷ 2

220 ÷ 2 = 110

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A line has a slope of 10 and includes the points (3, n) and (4,0). What is the value of n?<br> n =
ExtremeBDS [4]

Answer:

The value of n = -10  

Step-by-step explanation:

Given the points

  • (3, n)
  • (4,0)

Finding the slope between (3, n) and (4,0)

\left(x_1,\:y_1\right)=\left(3,\:n\right),\:\left(x_2,\:y_2\right)=\left(4,\:0\right)

As slope = 10

using the formula

Slope  =  [y₂ - y₁] /  [x₂ - x₁]

so substituting the values

      10   =  [0 - n] / [4 - 3]

      10   = -n / 1

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8 0
3 years ago
A is inversely proportional to b. If a=7.2 when b=-4, what will a equal when b=6?
Tpy6a [65]

Answer:

<h2>a = - 4.8</h2>

Step-by-step explanation:

To find the value of a when b=6 we must first find the relationship between them.

The statement

a is inversely proportional to b is written as

a \:  \:  \alpha  \:  \:  \frac{k}{b}

where k is the constant of proportionality

When a = 7.2 , b = -4

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7.2=  \frac{k}{ - 4}

k = 7.2 × - 4

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So the formula for the variation is

a =  -  \frac{28.8}{b}

When

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That's

a =  -  \frac{28.8}{6}

We have the final answer as

<h3>a = - 4.8</h3>

Hope this helps you

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