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3 years ago

1/8 + 1/4 estimate the sum or difference

1 answer:

4 0

When estimating you need to round up or down to find something close to the real answer. Here we would round 1/8 down to 0 and 1/4 down to 0. So 0+0=0.

Your estimated answer is 0

The real answer is 3/8 so 0 is close and that is the point in estimating

You might be interested in

In simplest radical form, what are the solutions to the quadratic equation 6 = x2 - 10/?

pickupchik [31]

Answer:

$x = 5 \± \sqrt{31}$

Step-by-step explanation:

Given

$6 = x^2 - 10x$

Required

The solution in radical form

$6 = x^2 - 10x$

Rewrite as:

$x^2 - 10x - 6 = 0$

Using the quadratic formula, we have:

$x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

Where

a = 1

b = -10

c = -6

So, we have:

$x = \frac{-(-10) \± \sqrt{(-10)^2 - 4*1*(-6)}}{2*1}$

$x = \frac{10 \± \sqrt{100 +24}}{2*1}$

$x = \frac{10 \± \sqrt{124}}{2}$

Split the roots

$x = \frac{10 \± \sqrt{4 * 31}}{2}$

Express $\sqrt 4$ as 2

$x = \frac{10 \± 2\sqrt{31}}{2}$

Split the fraction

$x = \frac{10}{2} \± \frac{2\sqrt{31}}{2}$

$x = 5 \± \sqrt{31}$

5 0

3 years ago

What’s the area of this figure

kvasek [131]

Answer:

743.25m^2

Step-by-step explanation:

Area of triangle = 1/2bh

= 1/2 x 30 x 26

= 390

Area of semi circle = 1/2 πr^2

= 1/ 2 x 3.14 x 15 x15

=353.25m^2

= 390 + 353.25

= 743.25m^2

8 0

3 years ago

Read 2 more answers

Sandy and sally were able to paint a a at house in 5 hours together: it takes sally 9 hours to finish this job alone. Without he

OLEGan [10]

Answer:

9/44 of an hour, or just over 12 minutes

Step-by-step explanation:

Person 1 + Person 2 divided by Person 1 x Person 2 = Both together

9 + x / 9*x = 5

9+x/9x = 5

Multiply both sides by 9x

9 + x = 45x

Subtract x from both sides

9 = 44x

Divide by 44 to get x.

9/44 of an hour

5 0

3 years ago

I need help to find the answer

Debora [2.8K]

The answer would be a ikk

8 0

3 years ago

Triangle ABE ~ Triangle CDE. Find the length of altitude for NE.

Varvara68 [4.7K]

Hope that it will help you

7 0

3 years ago