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bezimeni [28]
4 years ago
7

Dmitri wants to cover the top and sides of the box shown with glass tiles that are 5mm square. How many tiles does he need? ( Th

e length is 15cm, the width is 20cm and the height is 9cm).

Mathematics
1 answer:
nikklg [1K]4 years ago
3 0
Here you gooo ^^^^^^^

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If p is the hypothesis of a conditional statement and q is the conclusion, which is represented by ~p → ~q?
AfilCa [17]

Conditional statement is a statement with a hypotesis and a conclusion:

If \text{ \underline{ hypothesis } } p , then \text{ \underline { conclusion } } q or mathematically p\rightarrow q .

Converse statement of p\rightarrow q is statement q\rightarrow p .

If you negate (that means stick a "not" in front of) both the hypothesis and conclusion, you get the inverse: \neg p\rightarrow \neg q.

Finally, if you negate everything and flip p and q (taking the inverse of the converse) then you get the contrapositive: \neg q\rightarrow \neg p.

Then,

Answer: the correct choice is D (the inverse of the original conditional statement).

8 0
4 years ago
Read 2 more answers
Ericka observed the total variation in the water level over 6.2 years to be −13.64 mm. She compared this to the average annual t
max2010maxim [7]

Answer:

3.96mm/year

Step-by-step explanation:

Given that :

Given that:

Observed variation in water level over 6.2 years = - 13.64mm

Average annual trend shows rise in water level at 1.8 mm / year

difference between how much average water levels rose and how much the water level fell in the part of the river she observed?

Average Yearly observed variation :

Observed variation / number of years

-13.64mm / 6.2 years

= - 2.16 mm

Hence, observed yearly fall = - 2.16 mm

Yearly rise = 1.8mm / year

Difference :

( 1.8 mm/year) - (-2.16mm / year)

= (1.8 + 2.16) mm/year

= 3.96 mm/year

8 0
3 years ago
Read 2 more answers
Which shows a factor of 100b2 - 144a4?10b - a.12a
Likurg_2 [28]
I would say. C
Since 100 factor is 10b. And -144 is 12a^2
hope this helps and you get it right
7 0
4 years ago
I need help on number 9. I don’t even know how to start
Elan Coil [88]

begin by pulling 2 out of the numerator using the distributive property.

numerator: 2(16x^4 - 25)              and now factor

numerator: 2(4x^2 - 5)(4x^2 + 5)

Now go to the denominator. It looks messy but it will break down.

Pull out 4x^2 for the first two terms and 5 for the last 2 terms. Use the distributive property.

denominator: 4x^2(x - 3) - 5(x - 3)  now x - 3 is the common term.

denominator: (x - 3)(4x^2 - 5)

Put the two results together.

\dfrac{2(4x^2- 5)*(4x^2+5)}{(4x^2-5)(x-3)}

After canceling out 4x^2 - 5 on both the numerator and the denominator, you are left with.

\dfrac{2(4x^2+5)}{(x-3)}


5 0
3 years ago
Read 2 more answers
X^2-5x=-4 . I need to find the zeroes
GrogVix [38]
The zeros of a quadratic equation are equal to the x-intercepts of its graph. In other words, you must find the x-value that causes the expression to equal zero. Start by adding 4 to both sides of the equation:

X² - 5x + 4 = 0

Factor the equation:

(x - 1)(x - 4) = 0

Now calculate each piece separately, starting with the first one:

x - 1 = 0

Add 1 to both sides of the equation:

x = 1

We have proven that x = 1. Now calculate the second piece:

x - 4 = 0

Add 4 to both sides of the equation:

x = 4

We have proven that x = 4. Consequently, we have proven that (x = 1) and (x = 4) are the two zeros of this quadratic equation.

I hope this helps!
4 0
4 years ago
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