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max2010maxim [7]
3 years ago
8

X^2-2x-15=0 x^2-7x=18 4n^2=4n+36=0

Mathematics
1 answer:
Blizzard [7]3 years ago
8 0

Answer: oh  this is hard

Step-by-step explanation: its b

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A rectangle has length that is 5 less than 2 times the width. Write an expression for the area of the rectangle.
a_sh-v [17]

We are given a relationship between the sides of a rectangle, that is, the length of one of its sides is 5 less two times its width, and we are asked to find an expression for the area. Let's remember that the area of a rectangle is equal to the product of the length of its side by its width. Let "w" be the length of the rectangle and "L" its lenght, then the area is given by the following formula:

A=Lw

We can use the relationship given in the problem, that is, its length being five less two times its width, that is:

L=5-2w

Replacing in the formula for the area we get:

A=(5-2w)w

Now we use the distributive law:

A=5w-2w^2

7 0
1 year ago
Part A is asking how long the bridge is and Part B is asking how expensive it would be if each foot it 1500
katrin [286]

Answer:

(a)80 feet

(b)$120,000

Step-by-step explanation:

<u>Part A</u>

<u>Intersecting Secant-Tangent Theorem</u>

If a tangent segment and a secant segment are drawn to a circle from an exterior point, then the square of the measure of the tangent segment is equal to the product of the measures of the secant segment and its external secant segment.

In the attached diagram, the theorem applied is:

|AX|^2=|UX|*|TX|

Comparing with our diagram:

|AX|=30 feet

|UX|=10 feet

Length of the Bridge,L

Therefore:

30^2=10 X ($Length of the Bridge+10)

900=10(L+10)

L+10=900/10

L+10=90

L=90-10=80 feet

Length of the Bridge=80 feet

<u>Part B</u>

If each foot costs $1500

Cost of the bridge=$1500*80=$120,000

4 0
3 years ago
Can I please get some help with this?
MaRussiya [10]

Answer:

B

Step-by-step explanation:

8 0
3 years ago
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Translate the sentence into an inequality.
Annette [7]

Answer:

the sentence into an inequality.

The product of y and 5 is less than --22

5y<-22

Since -22 is greater

6 0
3 years ago
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2.549 miles can be rounded to 3 miles and 2.5 miles.Explain how its true.
frez [133]

Answer:

If you round 2.549 miles to 3, you are rounding it to the nearest ones place(whole number).  2.549 rounded to the nearest tenth, however, is 2.5 because 2.549 is being rounded to the tenth decimal place.  

Step-by-step explanation:

4 0
3 years ago
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