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3 years ago

How many are 4 x 4 ?

Mathematics

1 answer:

gavmur [86]3 years ago

7 0

16
4+4=8
4+4=8
8+8= 16

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1. Simplify -7 + {12 - 3[50 - 4(2+3)] }

Komok [63]

1. Simplify $-7 + (12 - 3[50 - 4(2+3)])$ this expression step by step:

$2+3=5;$
$4\cdot (2+3)=4\cdot 5=20;$
$50-4\cdot (2+3)=50-20=30;$
$3\cdot [50-4(2+3)]=3\cdot 30=90;$
$12-3\cdot[50-4(2+3)]=12-90=-78;$
$-7 + (12 - 3[50 - 4(2+3)])=-7+(-78)=-7-78=-85.$

2. Simplify the expression $\dfrac{1}{3} + 6\left(\dfrac{2}{3} - \dfrac{1}{6}\right)^2$ in the same way:

$\dfrac{2}{3}-\dfrac{1}{6}=\dfrac{2\cdot 2-1}{6}=\dfrac{3}{6}=\dfrac{1}{2}$
$\left(\dfrac{2}{3} - \dfrac{1}{6}\right)^2=\left(\dfrac{1}{2} \right)^2=\dfrac{1}{4}$
$\dfrac{1}{3} + 6\left(\dfrac{2}{3} - \dfrac{1}{6}\right)^2=\dfrac{1}{3} + 6\cdot \dfrac{1}{4}=\dfrac{1}{3}+\dfrac{3}{2}=\dfrac{1\cdot 2+3\cdot 3}{6}=\dfrac{11}{6}$

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4 years ago

6x^2-2x+1=0 solve for x

Paraphin [41]

Solve by using the quadratic formula.

x=1+-i√5 / 6

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4 years ago

sam cut a pie into equal parts.There are 3 slices left.The angle measures for 3 slices is 72.how many slices did he cut?

uysha [10]

15 slices were cut by sam

6 0

4 years ago

Read 2 more answers

Plz help me with my<br>math homework

Ivahew [28]

1)4
2)5
3)15
4)9
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The absolute value of a number describes its magnitude, or the distance a number is from zero when placed on a number line
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3 years ago

As a maintenance electrician, it takes you 40 minutes to rewire a motor. You have 6 motors to rewire.

bazaltina [42]

Answer:

The maintenance electrician takes 287.555555566667 hours to to rewire all the motors

Step-by-step explanation:

1. Calculate all of the minutes for all the numbers.

It takes you 26.6666667 minutes to rewire 2/3 of a motor.

It takes you 160 minutes to rewire 4 motors.

It takes you 266.666667 to rewire 6 2/3 motors

It takes you 7,200 minutes to rewire 180 motors

It takes you 9,600 minutes to rewire 240 motors

2. Add all of the minutes together.

26.666667 + 160 + 266.666667 + 7,200 + 9,600 = 17253.333334

It takes you 17253.333334 minutes to rewire 431.333333 motors

3. Convert minutes to hours

17253.333334/60 = 287.555555566667

It takes you 287.555555566667 hours to rewire all the motors

7 0

4 years ago

How many are 4 x 4 ?​

How many are 4 x 4 ?