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2 years ago

5

The estimated difference between two numbers is 60. Find two numbers that when rounded to the nearest ten, have a difference of

60. Use these number. 135 128 61 141 74 56

1 answer:

Verdich [7]2 years ago

7 0

Answer:

128 and 74.

Step-by-step explanation:

128 rounded to the nearest ten is 130, and 74 rounded to the nearest ten is 70. 130-70=60

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This is the difference between the estimated value and the true value

evablogger [386]

Answer:

Estimated is close but not completely correct, and true value has the highest accuracy.

Step-by-step explanation:

Hopefully that helped! :)

6 0

3 years ago

How do u solve 31 is 40% of what number? So confused?

VashaNatasha [74]

$Method\ \#1\\\\\begin{array}{ccc}31&-&40\%\\x&-&100\%\end{array}\ \ \ \ |cross\ multiply\\\\\\40x=31\cdot100\ \ \ \ |divide\ both\ sides\ by\ 40\\\\x=\frac{3100}{40}\\\\\boxed{x=77.5}$

$Method\ \#2\\\\p\%=\frac{p}{100}\to40\%=\frac{40}{100}=0.40=0.4\\\\x-the\ number\\\\40\%\ of\ the\ number\ is\ 31:\\\\0.4x=31\ \ \ \ |divide\ both\ sides\ by\ 0.4\\\boxed{x=77.5}$

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3 years ago

What is the square root of -16<br><br> -8i<br> -4i<br> 4i<br> 8i<br><br><br><br> Pls explain tooo

erik [133]

4i,
Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.

3 0

2 years ago

What are the solutions of 4x^2-4x^2=8

In-s [12.5K]

Answer:

0

Step-by-step explanation:

4x^2 = 8x

1.8x-8x=8

2.0x=8

3.x=8÷0

4.x=0

8 0

3 years ago

Using the given points and line, determine the slope of the line. (1, 2) and (2, 1) slope = 2 slope = 1 slope = -1

Bas_tet [7]

Answer:

-1

Step-by-step explanation:

Slope formula: (y₂ - y₁) / (x₂ - x₁)

= (2 - 1) / (1 - 2)

= -1

8 0

2 years ago