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3 years ago

12 1/2 - 6 5/8 = what does it equal??

Mathematics

1 answer:

jok3333 [9.3K]3 years ago

3 0

It Equals 5.875 Hope this helps

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choose the correct equivalent expression that includes a set of parentheses so that the value of expression is 20.12+32•4

MaRussiya [10]

Answer:

(4x5)(4x3)+(4x8)(4x1)

Step-by-step explanation:

All of the numbers are being multiplied by 4, therefore it makes it easier to understand.

5 0

3 years ago

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Solve the given system of equations utilizing either the substitution or addition method.

Nataly [62]

Answer:

Value of x=4 and y=-13/3

Step-by-step explanation:

We need to solve the systems of equations

$5x+3y=7 \ and \ \frac{3}{2}x-\frac{3}{4}y =9\frac{1}{4}$

Solving using substitution method:

Let:

$5x+3y=7---eq(1) \\ \frac{3}{2}x-\frac{3}{4}y =9\frac{1}{4}---eq(2)$

Find value of x from eq(1) and put in eq(2)

$5x+3y=7\\5x=7-3y\\x=\frac{7-3y}{5}$

Put value of x in eq(2)

$\frac{3}{2}(\frac{7-3y}{5}) -\frac{3}{4}y =\frac{37}{4}\\\frac{21-9y}{10} -\frac{3}{4}y =\frac{37}{4}\\Taking \ LCM\\\frac{21*2-9y*2-3y*5}{20} =\frac{37}{4}\\\frac{42-18y-15y}{20} =\frac{37}{4}\\42-33y=\frac{37}{4}*20\\42-33y=185\\-33y=185-42\\-33y=143\\y=\frac{143}{-33}\\y=-\frac{13}{3}$

Now, finding value of x by putting value of y in eq(1)

$x=\frac{7-3y}{5}\\x= \frac{7-3(-\frac{13}{3}) }{5}\\x=\frac{7+13}{5}\\x=\frac{20}{5}\\x=4$

So, Value of x=4 and y=-13/3

4 0

3 years ago

James earns $584 per week. If he receives a pay increase of 7.5%, find:

liberstina [14]

So the pay after the increase is 4380 so subtract 4380-584 which equals 3796.

3 0

3 years ago

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Multiply and simplify the following complex numbers? (4- 2i).(-5 +4i)

Ronch [10]

Answer:

-12 +26i

Step-by-step explanation:

Multiple using the FOIL Method, then combine the real and imaginary parts of the expression.

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7 0

3 years ago

Need help ASAP its due tonight

Keith_Richards [23]

Answer:

Step-by-step explanation:

15/3 + 3 =

15/3 + 9/3 =

24/3 =

2(15) + 3 30 + 3 33

------------- = -------------- = ----------------

3 3 3

33/ 3 =

mark me brainliest :D

8 0

3 years ago

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