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3 years ago

What is the mathematical definition of the Subtraction Property of Equality?

2 answers:

6 0

I just learned this today.

In my case, You can add or subtract the same quantity from both sides and retain the equality.

For example: If $a=b$ , then $a-c=b-c$

Additive and Subtractive Property of Equality are the Same Thing

Credit to my math Teacher for this

Vinvika [58]3 years ago

4 0

When both sides of an equation have the same number subtracted from each of them, so the remaining part of the equation is still equal

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Find the value of PR if Q is between P and R<br> when PQ=25, PQ=2x+1, and QR=x.<br> X<br> ат<br> X=8

Eva8 [605]

Answer:

$PR = 37$

Step-by-step explanation:

Given

$PQ = 25$

$PQ = 2x +1$

$QR = x$

Required

Since Q is between the given points, then:

$PR = PQ + QR$

This gives:

$PR = 2x + 1 + x$

Collect like terms

$PR = 2x + x+ 1$

$PR = 3x + 1$

Next, solve for x

We have:

$PQ = 25$

$PQ = 2x +1$

This gives:

$2x + 1 = 25$

Collect like terms

$2x = 25 -1$

$2x = 24$

Divide by 2

$x = 12$

So:

$PR = 3x + 1$

$PR = 3 * 12 + 1$

$PR = 37$

7 0

3 years ago

Find the equation of the linear function represented by the table below in slope-intercept form.

Lostsunrise [7]

1/2 37373722828292837372829191

5 0

3 years ago

Which pair of fractions is equivalent to this pair: <img src="https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B5%7D" id="TexFormula1" ti

liubo4ka [24]

$\dfrac{3}{5}=\dfrac{3\cdot7}{5\cdot7}=\dfrac{21}{35}\\\\\dfrac{2}{7}=\dfrac{2\cdot5}{7\cdot5}=\dfrac{10}{35}\\\\Answer:\ \boxed{B.}$

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3 years ago

A prism and two nets are shown below:

iris [78.8K]

Answer:

asnwer is learn how to do answers without needing a app

Step-by-step explanation:

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3 years ago

Read 2 more answers

The coffee counter charges ?"$11.00" per pound for kenyan french roast coffee and ?"$13.00" per pound for sumatra coffee. How mu

zloy xaker [14]

Answer: The answer is 13 ponds of each type should be used.

Step-by-step explanation: Given that the coffee counter charges $11.00 per pound for kenyan french roast coffee and $13.00 per pound for sumatra coffee. We are to find the quantity of each type that should be used to make a 26 pound blend that sells for $12.00 per pound.

Let 'x' pound and 'y' pound of kenyan french roast coffee and sumatra coffee be used in the mixture of 26 pound.

So, we have

$x+y=26,~~~~~~~~~~~~~~~~~~~~~~(A)\\\\11x+13y=12\times 26.~~~~~~~~~~(B)$

Multiplying equation (A) by 11 and subtracting from equation (B), we have

$13y-11y=12\times26-11\times26\\\\\Rightarrow 2y=26\\\\\Rightarrow y=13,$

and from equation (A),

$x=26-13=13.$

Thus, 13 pounds of each type of coffee should be used.

8 0

3 years ago