Which is a perfect square?

Answer:

Ed's answer of [tex]\frac{3}{8}[/tex] is correct because he divided [tex]\frac{1}{4}[/tex] by [tex]\frac{2}{3}[/tex] to get his answer.

Step-by-step explanation:

To solve for m in [tex]\frac{2}{3}m=\frac{1}{4}[/tex] you want to isolate m by dividing by [tex]\frac{2}{3}[/tex] on both sides, therefore he divided [tex]\frac{1}{4}[/tex] by [tex]\frac{2}{3}[/tex] to get his answer of [tex]\frac{3}{8}[/tex], and his answer is correct.

Answer:

15

Step-by-step explanation:

Answer:

A estimated guess based off past information not some random number

Step-by-step explanation:

Example:

Make a reasonable prediction on if we will have school tomorrow. We are expecting a foot of snow.

Reasonable: We most likely won't because it will be cold and snowing. And it won't be safe.

Not Reasonable: We will because it will be sunny

Answer:

c is correct

Step-by-step explanation:

3.6 with a bar above means 3.6666666666.. continuing forever which is smaller then 3.7

Answer:

C. 7.6 < 7.67

Answer:

Step-by-step explanation:

If the overall area of the square is 30 units with a width of 6 units, all you need to do is divide 30 by 6. Or, if you add 6 till you get 30, which is much simpler.

If we start from six and count up till we get to/close to 30 without passing the number, we can do this.

6, 12, 18, 24, 30

Right on the dot of thirty! How lucky! Now we notice that while counting up, there were 5 variables (Don't know if I'm using this word correctly :\) of thirty in total. Then, if you want to double check, multiply 5 by 6 to get thirty and show proof that your answer is correct!

Good job! You survived the maths!

Anyways, here's the answer: The missing length of the 30 unit square is 5.

Answer:

5 is its length, divide the given length to the total area to get your missing length

Whenever given an area and a length or a width either ONE of those, you always divide the given length. Why? Because the number you get from dividing will make sense! That number you got from dividing times the give length will equal your area! Which is why you divide your given length to your total area.

Answer: no solution

Step-by-step explanation:

Answer:

Area= 90

Step-by-step explanation:

triangle area: (b x h) / 2

(12 x 15) / 2

(180) / 2

a= 90

Answer:

x = m + 3b

Step-by-step explanation:

add 3b to each side

x = m + 3b

Answer:

x=m+3b

Step-by-step explanation:

Hi there!

Our goal to make x the subject of the formula is to isolate x on one side and have everything else on the other side

here's the given formula:

m=x-3b

-3b is on the same side as x, which we don't want

add 3b to both sides (-3b+3b=0)

m=x-3b

+3b +3b

________

m+3b=x

since x is now the subject of the formula, we're done

Hope this helps!

Answer:

Yo, 84/6 is 14

Step-by-step explanation:

The quotient is the answer you get from a division problem.

Answer:

84 ÷ 6 = 14, or 6 ÷ 84 = 0.07142857142857142857142857142857...

I assume that you meant 84 ÷ 6.

Hope that this helps!

Answer:

The maximum of the parabola lands at (2,5).

The coordinates of the turning point of the parabola whose equation is y=-x²+4x+1 are (2, 5)

A coordinate system is a system that uses one or more numbers, or coordinates, to uniquely determine the position of the points.

The equation of Parabola is y=-x²+4x+1

The turning point (vertex) is the point where the derivative is equal to zero.

y=-x²+4x+1

Differentiate the equation

dy/dx=-2x+4

Now equate dy/dx with zero

dy/dx=0

-2x+4=0

-2x=-4

x=2

Now put x value in the equation

y=-(2)²+4(2)+1

y=-4+8+1

y=5

Hence the coordinates of the turning point of the parabola whose equation is y=-x²+4x+1 are (2, 5)

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Answer: 105

Step-by-step explanation:

28% es 0.28 en decimal

28% de 375 es 375 x 0.28

375 x 0.28 = 105

Answer:

105

Step-by-step explanation:

[tex]\frac{y}{375} :\frac{28}{100}[/tex]

y × 100 = 28 × 375

100y = 10500

100y ÷ 100 = 10500 ÷ 100

y = 105

Answer:

10 feet

Step-by-step explanation:

20x6= 120

120/12=10

=10 ft

Answer:

D

Step-by-step explanation:

An angle that measures 180 degrees resembles a straight line.

A is greater than 90 degrees but less than 180 degrees.

B is less than 90 degrees.

C is equal to 90 degrees.

D is equal to 180 degrees.

Answer:

a = 36

Step-by-step explanation:

3 + (11/12)a = 36

Subtract 3 from both sides

(11/12)a = 33

multiply both sides by 12

11a = 396

Divide both sides by 11

a = 36

Answer:

a = 36

Step-by-step explanation:

trust me and give brainliest

Answer:

27 cubic units

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

possibly china, but not confirmed.

Step-by-step explanation:

Answer: B) (x - 5)(x + 4)

Step-by-step explanation:

we’re looking for x intercepts at x = 5 and x = -4

x - 5 = 0; x = 5

x + 4 = 0; x = -4

(x - 5)(x + 4) is your answer

Answer:

Confidence Interval =-0.76,+1.56

Step-by-step explanation:

The confidence interval can be determined by

(x1`- x2`) ± z∝/2 √s1²/n1 + s2²/n2

z∝/2 for 93% is 1.81

The mean and the standard deviations can be calculated using the calculator.

The mean x1`= ∑x/ n=  5+ 5+ 6+ 6+ 6+ 3+ 4+ 6+ 6+ 6

                                  = 53/10= 5.3

Standard deviation = s1`=   1.0049= 1.005

The mean x2`= ∑x/ n=  7+ 3+ 4 +7+ 4+ 7+ 3+ 3+ 7+ 4/10

                                  = 49/10= 4.9

Standard Deviation = s2= 1.75783= 1.76

Putting the values

(x1`- x2`) ± z∝/2   √s1²/n1 + s2²/n2

(5.3-4.9 ) ± 1.81 √1.005²/10 +1.76²/10

0.4 ± 1.81 √ 1.010025/10 + 3.0976/10

-0.76,+1.56

The confidence interval for 93% two tailed test is [-0.76,+1.56]

Answer: This is what I could figure out

Step-by-step explanation:

The amount of time taken to print by 3 printers is 2¹/₂₈ hours.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that It takes 4³/₄ hours to print some letters when 7 printers are used.

The amount of time will be calculated as,

Time = ( 4³/₄ x 3 )  ÷ 7

Time = (19 / 4 x 3 )  ÷ 7

Time =  57 / 28

Time = 2¹/₂₈ hours

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Answer:

[tex] \frac{(49 {t}^{ - 5} )}{( {7}^{ - 3} \times 10 {e}^{ - 9} ) \times (t \times 0)} \\ = \frac{( { {7}^{2} t}^{ - 5} ) \times 7 {}^{3} }{(10 {e}^{ - 9} )} \\ = \frac{ {7}^{5} }{( 10{t}^{5} {e}^{ - 9} ) } [/tex]

Answer:

Rounded: $478.06

Step-by-step explanation:

Set up an equation:

Variable x = original price

62/100 = 296.40/x

Cross multiply

62 × x = 100 × 296.40

62x = 29,640

Divide both sides by 62:

x = 478.064516....

Round to nearest cent (hundredths place):

x = 478.06

Check your work (using the rounded estimate will be close to $296.40 but not exact because it is rounded; once you round your answer and it should match):

478.06 × 62%

Convert the percentage into a decimal:

478.06 × 0.62

296.3972

Round to the nearest cent (hundredths place):

296.40

Answer:

-41/80, -45/80, -48/80, -51/80, -55/80, -59/80

Step-by-step explanation:

-4/8, -3/4 = -4/8, -6/8

               = -40/80, -60/80

∴ Rational numbers between -40/80 and -60/80 = -41/80, -45/80, -48/80, -51/80, -55/80, -59/80.

Answer:

Step-by-step explanation:

You want the solution to the system of equations ...

We notice that each of these equations has a leading minus sign, and has coefficients that have a common factor. We can multiply by -1 to make the leading coefficient positive, and we can divide by the common factor. Doing this puts the equations in standard form:

  2x -y = -6

  x -y = -4

Subtracting the second equation from the first gives ...

  (2x -y) -(x -y) = (-6) -(-4)

  x = -2

Rearranging the second equation to find y, we have ...

  y = x +4

  y = -2 +4 = 2

The solution is (x, y) = (-2, 2).

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Answer: 9.82cm

Step-by-step explanation: