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Marysya12 [62]
3 years ago
7

Anyone who answers all these questions I will give them an expert answer

Mathematics
2 answers:
8090 [49]3 years ago
4 0

Answer:

area is 25 squared

Step-by-step explanation:

ivanzaharov [21]3 years ago
4 0

Answer:

25cm2

Step-by-step explanation:

Perimeter of triangle = a + a + a = 30cm

So, a = 10cm

Perimeter of rectangle = 2(a + b) = 30cm

A + b = 30/2 = 15cm

So, b = 15 - 10 = 5cm

Area of square = b × b

Area = 5 × 5 = 25cm2

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Maria participates in a sports activity and runs the following amount__________45m

Cual es la respuesta???????

7 0
2 years ago
Please help !!!!!!!!
Annette [7]
The answer is D cuz it cross the x
5 0
2 years ago
Two passenger train, A and B, 450 km apart, star to move toward each other at the same time and meet after 2hours.
likoan [24]

Let v be the speed of train A, and let's set the origin in the initial position of train A. The equations of motion are

\begin{cases}s_A(t) = vt\\s_B(t) = -\dfrac{8}{7}vt+450\end{cases}

where s_A,\ s_B are the positions of trains A and B respectively, and t is the time in hours.

The two trains meet if and only if s_A=s_B, and we know that this happens after two hours, i.e. at t=2

\begin{cases}s_A(2) = 2v\\s_B(2) = -\dfrac{16}{7}v+450\end{cases}\implies 2v = -\dfrac{16}{7}v+450

Solving this equation for v we have

2v = -\dfrac{16}{7}v+450 \iff \dfrac{30}{7}v=450 \iff v=\dfrac{450\cdot 7}{30} = 105

So, train A is travelling at 105 km/h. This implies that train B travels at

105\cdot \dfrac{8}{7} = 15\cdot 8=120 \text{ km/h}

5 0
3 years ago
A rectangular prism has a length of 2 y, a width of 3 y, and a height of 5 y. If the volume of the prism is 10,290 units, what i
inessss [21]

Answer:

y=7

Step-by-step explanation:

2x7=14

3x7=21

5x7=35

14x21x35=10,290

6 0
3 years ago
Let A = R−{0}, the set of all nonzero real numbers, and consider the following relations on A × A. Decide in each case whether R
andre [41]

Answer:

Step-by-step explanation:

Let A = R−{0}, the set of all nonzero real numbers, and consider the following relations on A × A.

Given that (a,b) R (c,d) if ad=bc

Or (a,b) R (c,d) if determinant

\left[\begin{array}{ccc}a&b\\c&d\end{array}\right] =0

a) Reflexive:

We have (a,b) R (a,b) because ab-ab =0 Hence reflexive

b) Symmetric

(a,b) R (c,d) gives ad-bc =0

Or da-cb =0 or cb-da =0 Hence (c,d) R(a,b). Hence symmetric

Download docx
5 0
3 years ago
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