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2 years ago

15 _2_3 = 9 Fill in the gaps from left to right.

Mathematics

2 answers:

ruslelena [56]2 years ago

8 0

15-2x3=9 following the rule of PEMDAS

umka21 [38]2 years ago

8 0

Answer:

-, x

Step-by-step explanation:

15 - 2 x 3 = 9

Remember PEMDAS (Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction)

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1.5 as a mixed number and 1.5 as a improper fraction

sergey [27]

1.5 as a mixed muber is 1 and 1/2, as an improper fraction it could be 3/2

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2 years ago

Read 2 more answers

The electrician charges $50 per visit plus $12 per hour of work. Steve hires the electrician to do some work for his house. If S

TEA [102]

Answer:

12.5 hours

Step-by-step explanation:

budget: 200

fix cost: 50

hourly rate: 12

hours: ?

----

First we deduct the fix 50 dollars cost from the total budget.

Then we divide the remaining amount with the hourly rate

( 200 - 50 ) / 12 = ?

? = 12.5 hours

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3 years ago

An artist uses different types of paper to create her masterpieces. She has shiny metallic paper and pink glittery paper. The sh

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Answer:

it is 24 . Logically in my idea .

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3 years ago

The average value of two positive numbers is 30% less than one of the two numbers. By which percentage is average value bigger t

Viefleur [7K]

Answer:

75% bigger

Step-by-step explanation:

Let the first number be x and the second be y.

So:

$Average = \frac{x + y}{2}$

And:

$Average = (1 - 30\%) * x$ -----30% less than x

Substitute $Average = (1 - 30\%) * x$ in $Average = \frac{x + y}{2}$

$\frac{x + y}{2} = (1 - 30\%) * x$

$\frac{x + y}{2} = (1 - 0.30) * x$

$\frac{x + y}{2} = 0.70 * x$

$\frac{x + y}{2} = 0.70x$

Cross multiply

$x + y = 0.70x * 2$

$x + y = 1.40x$

Collect like terms

$1.40x - x = y$

$0.40x = y$

Make x the subject

$x = \frac{y}{0.40}$

$x = 2.50y$

So, the average is:

$Average = (1 - 30\%) * x$

$Average = (1 - 30\%) * 2.50y$

$Average =0.70 * 2.50y$

$Average =1.75y$

Rewrite as:

$Average =(1 + 0.75)y$

Express as percentage

$Average =(1 + 75\%)y$

This means that the average is 75% bigger than the second number

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2 years ago

19. If the scale is 1:100 on a plan, and a fence is 7,500 mm,

marshall27 [118]

Answer:

It will measure 75 millimetres on the plan.

Step-by-step explanation:

Given:

Scale on the plan = 1:100

Length of the fence = 7,500 mm

To find:

how many millimetres will it measure on the plan

Solution:

As the ratio on the plan is 1: 100, the for 7500 the ratio will

x : 7500

Now by cross multiplication we get

$7500 \times 1 = x \times 100$

$7500 = 100x$

$x =\frac{ 7500}{100}$

x = 75

4 0

2 years ago