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Sever21 [200]
3 years ago
10

How estimating helps you check the reasonableness of your answers

Mathematics
1 answer:
I am Lyosha [343]3 years ago
4 0
Whats that supposed to mean-
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Needs some help with this please!
Bad White [126]

Answer:

y = mx

Step-by-step explanation:

if there is no '+ b' y-intercept is 0

3 0
2 years ago
Read 2 more answers
A rectangle is 6yards longer than it is wide. Find the dimensions of the rectangle if it’s area is 187 square yards
emmasim [6.3K]

Answer:

Width = 11 yards

Length = 17 yards

Step-by-step explanation:

First of all, the length of the rectangle is 6 yards longer than the width, this means, length = width + 6 yards. This dimensions can be represented on figure 1, where <em>w</em> is width, and <em>l</em>, for length.

We know the area of a rectangle is A = width x length

For our case 187 = w . (w + 6)

Using the Distributive Property for the multiplication we obtain

187 = w^{2} +6w

w^{2} +6w-187 =0,

Using the quadratic formula w=\frac{-b\±\sqrt{b^{2}-4ac } }{2a} where a = 1, b = 6, c = - 187 and replacing into the formula, we will have:

w=\frac{-6\±\sqrt{6^2-4(1)(-187)} }{2(1)}

w=\frac{-6\±\sqrt{36+748} }{2}=\frac{-6\±\sqrt{784} }{2}=\frac{-6\±28}{2}

We have two options: w=\frac{-6+28}{2}=\frac{22}{2}=11  yards

Or

w=\frac{-6-28}{2}=\frac{-34}{2}=-17 yards But a distance (width) can not be negative so, this answer for w must be discarded.

The answer must be width = 11 yards.

To find the length l =\frac{187}{11}=17 yards

6 0
3 years ago
Factor completely 4x2 16x. 4x(x 4) x(4x 4) 4(x2 4x) Prime.
vladimir2022 [97]

Answer:

4x(x+4)

Step-by-step explanation:

With the expression 4x^{2} +16x, start by looking to see if you can take out any x-values. As you can see, both 4x^{2} and 16x have an x to the first power. You can factor that out, leaving you with the expression x(4x+16). Now you look for the largest numerical value that you can take out. Both 4 and 16 are divisible by 4, so you can factor out the number 4, leaving you with the expression 4x(x+4).

5 0
2 years ago
How will knowing the value for the best measure of center for the heights of the adult males help Nancy determine whether she ca
uranmaximum [27]

Answer:

If Nancy only used the mean, then outliers could make her calculations inaccurate. By using an appropriate measure of center, Nancy is more likely to select clothing sizes that will fit the population of the countries she is sending clothing to.

Step-by-step explanation

From the app

8 0
3 years ago
Here’s a graph of a linear function write the equation that describes that function
posledela

Answer:

The answer is y = 4x - 1

Step-by-step explanation:

First find two points on the line.

I will be using (-1, -5) & (1, 3).

Using the formula for slope, substitute in the values and solve:

y2-y1/x2-x1(This is the formula)

3--5/1--1(When using this formula, if y1 or x1 are negative, make them positive.)

3+5/1+1 or 8/2; which simplifies into 4/1.

So, the slope is 4/1.

Now we use point-slope form:

y - y1 = m(x-x1)

1. Substitute in the values.

y--5 = 4/1(x--1)

2. Simplify and distribute.

y + 5 = 4/1x + 4

3. Subtract 5 from both sides.

y = 4/1x - 1

4. Simplify.

y = 4x - 1

8 0
3 years ago
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