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3 years ago

Need help on this question

Mathematics

1 answer:

Harman [31]3 years ago

8 0

Answer:

How to calculate the amount of sales tax?

Convert tax percentage into a decimal by moving the decimal point two spaces to the left.

Multiple the pre-tax value by the newly calculated decimal value in order to find the cost of the sales tax.

Add the sales tax value to the pre-tax value to calculate the total cost.

Step-by-step explanation:

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-3/2 divided by 1/4

Jobisdone [24]

Answer:

-6

Step-by-step explanation:

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2 years ago

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3x – 2y+3<br> 3y - 2x<br><br> X=7 Y=6

faust18 [17]

<h2><em>Answer:</em></h2><h2><em>3×7-2×6+3</em></h2><h2 /><h2><em>=21-12+3=24-12</em><em>=</em><em>1</em><em>2</em></h2><h2 />

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3 years ago

Ellie has 3 pound of milk. She gives 1/2 to her friends equally. How many does ellie have now.

gregori [183]

3/2= 1.5 pounds of milk

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2 years ago

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I need help on this I'm super confused.

Ksivusya [100]

Answer:

a) 7x-2

b) 28x-8

c) length of a side: 26 in, perimeter: 104 in, area: 676 square inches

i’m not quite sure abt c but i hope this helps :)

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2 years ago

Write a linear equation that contains the ordered pair shown in the table below:

Amiraneli [1.4K]

Answer:

$y=2x-4$

Step-by-step explanation:

Let the equation of line is $y=mx+b$ , where $m$ is the slope of the line.

It passes through $(-5,-14),(-2,-8)\ and\ (1,-2)$ .

(<em>Slope of the line</em> joining $(x_1,y_1)\ and\ (x_2,y_2)=\frac{y_2-y_1}{x_2-x_1}$ )

Hence slope of the given line

$m=\frac{-8(-14)}{-2-(-5)}=\frac{-8+14}{-2+5}=\frac{6}{3}=2$

Equation of line is: $y=2x+b$

The line passes through $(1,-2)$

$-2=2\times 1+b\\b=-2-2\\b=-4$

Check if $(-5,-14)$ is on the line $y=2x-4$

$L.H.S.=-14\\R.H.S.=2\times (-5)-4=-10-4=-14\\L.H.S.=R.H.S.$

Hence line passes through $(5,-14)$ .

Check if $(-2,-8)$ is on the line $y=2x-4$

$L.H.S.=-8\\R.H.S.=2\times (-2)-4=-4-4=-8\\L.H.S.=R.H.S.$

Hence line passes through $(-2,-8)$ .

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2 years ago