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3 years ago

What is x+b=3? ( b is a constant)

1 answer:

3 0

It could be anything, really. As long as the answer is 3. x could equal 1 and b could equal 2, so that would be 1 + 2 = 3 or flip it. Or 0 and 3, or 3 and 0.

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Solve.... 4n- 9= 2 (5+ 2n)

timama [110]

Answer:

Step-by-step explanation:

Here you go mate

Use PEMDAS

Parenthesis,Exponent,Multiplication,Division,Addition,Subtraction

Step 1

4n-9=2(5+2n) Equation/Question

Step 2

4n-9=2(5+2n) Remove parenthesis

4n-9=4n+10

Step 3

4n-9=4n+10 Subtract 4n to sides

-9=10

Step 4

-9=10 Add 9

0=19

Answer

No solutions

Hope this helps

3 0

2 years ago

Write these numbers in order of size.

daser333 [38]

Answer:

ummmmm..... ykw I cant do that but I will give out free brainly points sooo ya (on a question)

Step-by-step explanation:

5 0

3 years ago

Let θ

konstantin123 [22]

Answer:

θ is decreasing at the rate of $\frac{21}{16}$ units/sec

or $\frac{d}{dt}$ (θ) = $\frac{-21}{16}$

Step-by-step explanation:

Given :

Length of side opposite to angle θ is y

Length of side adjacent to angle θ is x

θ is part of a right angle triangle

At this instant,

x = 8 , $\frac{dx}{dt}$ = 7

( $\frac{dx}{dt}$ denotes the rate of change of x with respect to time)

y = 8 , $\frac{dy}{dt}$ = -14

( The negative sign denotes the decreasing rate of change )

Here because it is a right angle triangle,

tanθ = $\frac{y}{x}$ -------------------------------------------------------------------1

At this instant,

tanθ = $\frac{8}{8}$ = 1

Therefore θ = π/4

We differentiate equation (1) with respect to time in order to obtain the rate of change of θ or $\frac{d}{dt}$ (θ)

$\frac{d}{dt}$ (tanθ) = $\frac{d}{dt}$ (y/x)

( Applying chain rule of differentiation for R.H.S as y*1/x)

$sec^{2}$ θ $\frac{d}{dt}$ (θ) = $\frac{1}{x}$ $\frac{dy}{dt}$ - $\frac{y}{x*x}$ $\frac{dx}{dt}$ -----------------------2

Substituting the values of x , y , $\frac{dx}{dt}$ , $\frac{dy}{dt}$ , θ at that instant in equation (2)

2 $\frac{d}{dt}$ (θ) = $\frac{1}{8}$ *(-14)- $\frac{8}{8*8}$ *7

$\frac{d}{dt}$ (θ) = $\frac{-21}{16}$

Therefore θ is decreasing at the rate of $\frac{21}{16}$ units/sec

or $\frac{d}{dt}$ (θ) = $\frac{-21}{16}$

3 0

3 years ago

5 students each brought in 8 boxes with 10 pencils per box and 10 students each brought in 8 boxes with 5 pencils per box how ma

Viefleur [7K]

Answer:

800 pencils

Step-by-step explanation:

because if 5students brought in a set of 8 box's with ten in it you get 80 times 5 you get 400 then you add the ten students that brought in a set of 40 each which is another 400 so400 +400= 800

3 0

3 years ago

Read 2 more answers

What is the answer to this equation 2/7*3

Delvig [45]

<span>2/7*3
Put 3 as an improper fraction
2/7 * 3/1
Multiply the numerator(2) by the other numerator(3) while multiplying the denominator(7) by the other denominator(1).
Final Answer: 6/7</span>

7 0

3 years ago