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2 years ago

If ab = 5 and a² + b² = 25, then (a + b)² =

2 answers:

5 0

Answer:
35
Explanation:
Recall that (a+b)^2=a^2+2ab+b^2.
We can rearrange it in a way that would make it easier to solve our problem:
(a^2+b^2)+2ab
Now, we just plug in 25 for a^2+b^2, and plug in 5 for ab:
25+2*5
=25+10
=35

prisoha [69]2 years ago

3 0

Answer:

100

Step-by-step explanation:

because 5+5=10

the 10^2=10*10=100

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The brass strip AB has been attached to a fixed support at A and rests on a rough support at B. Knowing that the coefficient of

Andre45 [30]

Answer:

Decrease in temperature = 4.6714°C

Step-by-step explanation:

We know that the formula fro deflection is:

δ = PL/AE + LαΔT

As deflection is equal to zero in this case, the formula becomes

ΔT = -P/αAE -------------- equation (1)

Now,

we see that only vertical force acting is weight

W = mg = 100*9.81

W = 981N = ∑ $F_{y}$ where 1N = 1kgm/s²

Now,

for horizontal forces

As we know that, Sum of all horizontal forces = 0

P - μN = 0

P - μW = 0

P = μW

P = 0.6 * 981

P = 588.8N or 589N

Now we need to calculate the area

area = width * thickness = 20 * 3

area = 60 mm²

Now by substituting all these values in equation 1, wee get

ΔT = -P/αAE = - 588.6/(20*10⁻⁶*60*10⁻⁶*105*10⁹)

ΔT = - 4.6714°C (negative sign indicates decrease)

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2 years ago

Two identical square pyramids were joined at their bases to form the composite figure below. 2 square pyramids have a base of 24

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Answer:

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A summer camp cookout is planned for the campers and their families. There is room for 200 people. Each adult costs $4, and each

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