Ask question

Ask question

All categories

2 years ago

8

Mr. Maddox asked four students to create a number line to help find the sum of the fractions.

2 answers:

Kazeer [188]2 years ago

8 0

Answer:

A number line going from Negative StartFraction 8 over 10 EndFraction to 0 in increments of StartFraction 1 over 10 EndFraction

(2nd option)

Step-by-step explanation:

When you add the 2 fractions together: -7/10 + 4/10 = -3/10

We need to find a number line that has -3/10 in it. The best answer choice is the 2nd option because we can go backwards to find the answer from positive 3/10 to our answer -3/10 (we are going -7 units backwards).

barxatty [35]2 years ago

5 0

Answer:

First choice

Step-by-step explanation:

<u>Sum of fractions:</u>

-7/10 + 4/10= - 3/10

the interval required on the line from the left of - 7/10 to the right of -3/10

<u>Which number line would be best to find this sum? </u>

-8/10 to 0

yes, this is good as covers the interval from -7/10 to - 3/10

-3/10 to 3/10

no, it doesn't include the left half of required section

4/10 to 11/10

no, it doesn't include the required interval

0 to 15/10

no, it doesn't include the required interval

You might be interested in

A rectangular tank that is 5324 ft cubed with a square base and open top is to be constructed of sheet steel of a given thicknes

marishachu [46]

Answer:

Side of 22 and height of 11

Step-by-step explanation:

Let s be the side of the square base and h be the height of the tank. Since the tank volume is restricted to 5324 ft cubed we have the following equation:

$V = s^2h = 5324$

$h = 5324 / s^2$

As the thickness is already defined, we can minimize the weight by minimizing the surface area of the tank

Base area with open top $s^2$

Side area 4sh

Total surface area $A = s^2 + 4sh$

We can substitute $h = 5324 / s^2$

$A = s^2 + 4s\frac{5324}{s^2}$

$A = s^2 + 21296/s$

To find the minimum of this function, we can take the first derivative, and set it to 0

$A' = 2s - 21296/s^2 = 0$

$2s = 21296/s^2$

$s^3 = 10648$

$s = \sqrt[3]{10648} = 22$

$h = 5324 / s^2 = 5324 / 22^2 = 11$

4 0

2 years ago

Which of the following terms correctly describe the object below. Check all that apply

mars1129 [50]

Answer:

Option a,d and e are correct.

Step-by-step explanation:

Pyramid is the figure in which every base and apex forms triangle.

Polygon is two dimensional figure with straight lines.

Square is a figure in which all four sides are equal.

Solid is a three dimensional figure.

Polyhedron is a three dimensional figure with straight edges and sharp corners.

Prism is a polyhedron with parallel bases.

The given figure is:

Pyramid

Solid

Polyhedron

4 0

2 years ago

Read 2 more answers

Solve for x in the equation x2+20x+100=36

Lady bird [3.3K]

The answer is:
$x = - 64 \div 22 = -2.909091$
But if x2 was supposed to be x^2 then the answer is:
$x = - 4.-16$

4 0

2 years ago

Read 2 more answers

Choose the function whose graph is given by:

loris [4]

<h2>Answer:</h2>

$y=3sec\left(\frac{1}{2}x\right)$

<h2>Step-by-step explanation:</h2>

The graphs of $sec(x)$ can be obtained from the graph of the cosine function using the reciprocal identity, so:

$sec(x)=\frac{1}{cos(x)}$

But in this problem, the graph stands for the function:

$y=3sec\left(\frac{1}{2}x\right)$

Because the period is now 4π as indicated and for $x=0$ in the figure and this can be proven as follows:

$Period=\frac{2\pi}{\frac{1}{2}}=4\pi$

Also, $for \ x=1 \ then \ y=3$ as indicated in the figure and this can be proven as:

$y=3sec\left(\frac{1}{2}x\right) \\ \\ y=\frac{3}{cos(0.5x)} \\ \\ y=\frac{3}{cos(0.5(0))} \\ \\ y=\frac{3}{1}=3$

5 0

2 years ago

Audrey has x pounds of red grapes and y pounds of

tamaranim1 [39]

Answer:

(2,2)

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers