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liq [111]
3 years ago
5

True or False?

Mathematics
1 answer:
Daniel [21]3 years ago
7 0

Answer:

True

Step-by-step explanation:

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What is the value of z? ( please help)
maxonik [38]

Answer:

z = 1

Step-by-step explanation:

See the diagram of the triangle attached to this question.

We know the property of angles of a triangle as if we sum any two interior angles then we will get the opposite exterior angle.

Hence,  

42z + 37 = 40z + (26z + 13)

⇒ 42z + 37 = 66z + 13

⇒ 37 - 13 = 66z - 42z

⇒ 24 = 24z

⇒ z = 1 (Answer)

7 0
3 years ago
PLS HELP ASAP! WILL MARK BRAINLIEST<br> sin ∠E =<br><br> 20/21<br> 20/29<br> 21/29<br> 21/20
MariettaO [177]
D





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5 0
3 years ago
Read 2 more answers
Which domain restrictions apply to this rational expression? x2 4x 4x2−4 select each correct answer.
rosijanka [135]

Because domain restrictions apply to this rational expression, x cannot be equal to {-2, 2}.

<h3>What is domain?</h3>

Domain restrictions are any points in the domain where the function will not have a value. This basically means that there is a point in the function where x will not work.

For the numerator, any value of x will suffice. We can have a value of 0 in the numerator, or a positive, negative, or decimal number.

However, the denominator cannot be equal to zero. This is due to the fact that a fraction bar represents division, and we cannot divide by zero.

Here,

x²-4=0

Add 4 to both sides:

x²-4+4 = 0+4

x² = 4

Take the square root of both sides:

√x² = √4

x = 2 or x = -2

The x cannot be equal to {-2, 2} as domain restrictions apply to this rational expression.

To know more about domain,

brainly.com/question/10238709

#SPJ4

7 0
1 year ago
Nancy is saving $2 from her allowance. Marco is saving $1 the fist week, $2 the second week, $3 the third week, and so on. At th
Sedaia [141]
He would have said $55

(PLEASE MARK BRAINLIEST)
7 0
3 years ago
The height of a firework shot upward from the ground with the initial velocity of 10meters per second is represented by the func
Nikolay [14]

Answer:

0.375 seconds

Step-by-step explanation:

In simple terms, to find the time it took to reach the ground, we need to find t from the equation.

If we differentiate h with respect to t we will get the velocity with which the fireworks is moving at.

h(t) = - 16t^2 + 4t.\\dh/dt =-32t +4

We can now equate this to its velocity and solve for t

10 = -32t +4

t = 0.1875 <em>( time cannot be negative in value, so we ignore the negative sign)</em>

<em />

Therefore, the time it took the fireworks to reach the ground is = 2 x 0.1875= 0.375 seconds.

<em>(We need to account for the fact that the fireworks went up and came down)</em>

5 0
3 years ago
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