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m_a_m_a [10]
2 years ago
7

1. In a parallelogram ABCD, AD=12cm. if the altitudes corresponding

Mathematics
1 answer:
olganol [36]2 years ago
6 0

Answer:

10.5 cm

Step-by-step explanation:

area of parallelogram = Bh

12 x 7 = AB x 8

AB = 12x7 / 8 = 21/2 = 10.5

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4x^2-7x=15<br> Solve by factoring and please please please explain or show the work
vodomira [7]

Answer:

x=3 and x=-1.25

Step-by-step explanation:

4x^2-7x=15

subtract 15 from each side:

4x^2-7x-15=0

factor  (trying different numbers that the sum is 7 and the quotient is 15)

(2x-6 )(2x+2.5 )=0

2x-6=0 add 6 to each side

2x=6

x=3

2x+2.5=0   subtract 2.5 from each side

2x=-2.5

x=-1.25

8 0
3 years ago
a hose fills a hot tub at a rate of 4.97 gallons per minute. How many hours will it take to fill a 336-gallon hot tub?​
Eddi Din [679]

Answer:

1.12675hours approximately

Step-by-step explanation:

If the tub was 4.97 gallons it would take 1 minute Right?

To find the the time required to fill the tub divide volume of tub by the rate of hose. We have 336/4.97=67.605minutes

Divide by 60` 67.605/60=1.12675hours approximately

6 0
3 years ago
A man sold a square field of side 35 m and a
Novosadov [1.4K]

Answer:

Total area of field sold(35*35)+(51*25)=2500

Area of square field is 2500

One side = \sqrt{a} = 50

So, the perimeter of the square(4*a)=4*50=200

Cost of fencing = 200*1.5 usd = $300

Step-by-step explanation:

6 0
2 years ago
You pick a card at random, put it back, and then pick another card at random.
denis23 [38]

Answer:

4/9

Step-by-step explanation:

The probability of getting a card less than 7 is 2/3, and picking a card greater than 5 is 2/3 too, so I believe that now you just have to multiply them: 2/3 * 2/3 = 4/9, and that, I believe, is your answer.

Tell me if I'm wrong :)

5 0
2 years ago
Read 2 more answers
Which of the following is the inverse to the function f(x)= x^2-10
Delvig [45]

as you already know, to get the inverse of any expression we start off by doing a quick switcheroo on the variables and then solve for "y".

\bf \stackrel{f(x)}{y}=x^2-10\implies \stackrel{switcheroo}{x=y^2-10}\implies x+10=y^2\implies \sqrt{x+10}=\stackrel{f^{-1}(x)}{y}

7 0
3 years ago
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