All categories

3 years ago

Us foil to figure out (x−7)(x−7)

Mathematics

1 answer:

VladimirAG [237]3 years ago

5 0

Answer:

x^2-14x+49

Step-by-step explanation:(x−7)(x−7)

=(x+−7)(x+−7)

=(x)(x)+(x)(−7)+(−7)(x)+(−7)(−7)

=x2−7x−7x+49

=x2−14x+49

You might be interested in

What is the least common denominator of 1/4, 1/14, 1/7

Tju [1.3M]

28

(have to write more so I'm writing this)

3 0

3 years ago

Read 2 more answers

For a sample of n = 30 scores, X = 45 corresponds to z = 1.50 and X = 40 corresponds to z = +1.00. What are the values for the s

TEA [102]

Answer:

Step-by-step explanation:

Here, it is given that the Z – score corresponding to the score X = 45 is 1.5 and the Z – score corresponding to the score X = 40 is...

Z = $\frac{X - M}{S}$

So:

1/ 1.5 = $\frac{45 - M}{S}$ and 1 = $\frac{40 -M}{S}$ . solve the both equations, we found out:

<=> S = 10

=> M = 30

Hence, mean is:

M = 45 -1.5S = 45 - 1.5 (10) = 30

3 0

2 years ago

Use the diagram and the following equation to solve for x.

Lemur [1.5K]

Starting with 113+ (2x+5)=180, combine like terms and to get 118+2x=180. Subtract 180-118, which gives you 62. Then you have 2x=62. Divide both sides by 2 to get a final answer of x=31.

8 0

2 years ago

Read 2 more answers

GAMING In a video game, the user navigates a character across an unknown land using a map. On the map, the distance between the

soldi70 [24.7K]

The question is an illustration of scale drawing

The character have to travel 8.5 km in the game to visit all three destinations and return to their starting point

<h3>How to calculate the actual distance</h3>

The distance on the map are given as:

A =2 cm

B = 8 cm

C = 7 cm

The total distance on the map would be:

$Total =2cm + 8cm + 7cm$

$Total =17cm$

The actual distance between the store and the dungeon is 4 kilometers.

This means that:

$B' =4km$

So, we have:

$Scale = B : B'$

$Scale = 8cm : 4km'$

Represent the required actual distance with x.

So, we have:

$17cm : x = 8cm : 4km$

Express as fraction

$\frac{x}{17} = \frac 48$

Multiply both sides by 17

$x = \frac 48 * 17$

$x = 8.5$

Hence, the actual distance travelled is 8.5 km