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WINSTONCH [101]
3 years ago
12

Simplify the expression: x2+x(x-5) -x+7

Mathematics
1 answer:
Veronika [31]3 years ago
8 0
Hi mate!

The answer after simplifying is: 2x^2-6x+7

Please let me know if you need further assistance! Have a terrific evening.
~Brooke❤️
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I need help with this question
givi [52]

Answer:

6

Step-by-step explanation:

The small triangle has a height of h and a base of 4

The large triangle has a height of 3 and a base of (2+4) = 6

The ratios is

3        h

---- = -------

6         4

The question mark is 6

5 0
4 years ago
Above is a graph of a proportional relationship. Explain the significance of the following points on this line:
zloy xaker [14]

Answer:

Well the points (0,0) go throught the orgin which tells you that the line js proportional the the other points have a certain about of distance between then to make the line linear.

Step-by-step explanation:


4 0
3 years ago
The perimeter of a rectangular field is 60 meters. Its area is 200 square meters. Find its dimensions.
Vanyuwa [196]

Answer:

20 m by 10 m

Step-by-step explanation:

let w be width and l be length , then

2(l + w) = 60 ( divide both sides by 2 )

l + w = 30 ( subtract w from both sides )

l = 30 - w → (1)

lw = 200 → (2)

Substitute l = 30 - w into (2)

w(30 - w) = 200 ← distribute parenthesis on left side

30w - w² = 200 ( subtract 200 from both sides )

30w - w² - 200 = 0 ( multiply through by - 1 )

w² - 30w + 200 = 0 ← in standard form

(w - 10)(w - 20) = 0 ← in factored form

Equate each factor to zero and solve for w

w - 10 = 0 ⇒ w = 10

w - 20 = 0 ⇒ w = 20

Substitute these values into (1)

l = 30 - 10 = 20

l = 30 - 20 = 10

dimensions of field is 20 m by 10 m

4 0
3 years ago
Read 2 more answers
Among all pairs of numbers whose difference is 6, find a pair whose product is as small as possible. What is the minimum produc
mixas84 [53]

Answer:

pairs of numbers is 3,-3

Step-by-step explanation:

The computation is shown below:

Let us assume a and b are the pairs of the numbers whose difference is 6

i.e.

a - b = 6

a = 6 + b

So

f = ab

f = (6 + b)b is minimum

Now

d ÷ db (6+ b)b = 0

(6+ b) + b = 0

2b = -6

b = -3

Now

a  = 6 + b

= 3

So pairs of numbers is 3,-3

6 0
3 years ago
How do you find geometric mean of a triangle
Norma-Jean [14]

Answer:

Step-by-step explanation:

The geometric mean is the positive square root of the product of two numbers. If we in the following triangle draw the altitude from the vertex of the right angle then the two triangles that are formed are similar to the triangle we had from the beginning. The two triangles formed are also similar to each other.

8 0
4 years ago
Read 2 more answers
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