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lubasha [3.4K]
3 years ago
7

The poster is 25cm wide. how high is the poster

Mathematics
1 answer:
sergejj [24]3 years ago
3 0

You can not work it out because we do not know the shape or the other properties of this poster.

Sorry for not being able to answer it.

You might be interested in
How to estimate the square root of 32
ELEN [110]

Answer:

~6.5

Step-by-step explanation:

6*6=32 7*7=49 between 6 and 7 and the middle is 6.5

5 0
3 years ago
How many and what type of solutions does the equation have?
Natali [406]
Let's solve the equation 2k^2 = 9 + 3k
First, subtract each side by (9+3k) to get 0 on the right side of the equation
2k^2 = 9 + 3k
2k^2 - (9+3k) = 9+3k - (9+3k)
2k^2 - 9 - 3k = 9 + 3k - 9 - 3k
2k^2 - 3k - 9 = 0

As you see, we got a quadratic equation of general form ax^2 + bx + c, in which a = 2, b= -3, and c = -9.
Δ = b^2 - 4ac
Δ = (-3)^2 - 4 (2)(-9)
Δ<u /> = 9 + 72
Δ<u /> = 81

Δ<u />>0 so the equation got 2 real solutions:
k = (-b + √Δ)/2a = (-(-3) + √<u />81) / 2*2 = (3+9)/4 = 12/4 = 3
AND
k = (-b -√Δ)/2a = (-(-3) - √<u />81)/2*2 = (3-9)/4 = -6/4 = -3/2

So the solutions to 2k^2 = 9+3k are k=3 and k=-3/2

A rational number is either an integer number, or a decimal number that got a definitive number of digits after the decimal point.

3 is an integer number, so it's rational.
-3/2 = -1.5, and -1.5 got a definitive number of digit after the decimal point, so it's rational.

So 2k^2 = 9 + 3k have two rational solutions (Option B).

Hope this Helps! :)
7 0
3 years ago
Read 2 more answers
What is the answer some one help please!!
scoray [572]
The correct answer is B
4 0
3 years ago
I NEED THIS ROGHT NOE help me pls
Lorico [155]

Answer:

A is estimated to 110.11

Step-by-step explanation:

Area of a regular pentagon = pa/2

p= perimeter

a= the apothem

Calculate it from the side length: p= 5s

8 0
3 years ago
Que es la geometria​
viktelen [127]
You need help with geometry ?
8 0
3 years ago
Read 2 more answers
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