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3 years ago

F (–1) if f (x) = –3x – 5.

Mathematics

2 answers:

Mamont248 [21]3 years ago

6 0

Answer: -2?

Step-by-step explanation:

-3x-1=3 (negative x negative = positive)

3 - 5 = -2

Lady_Fox [76]3 years ago

5 0

Answer:

-2

Step-by-step explanation:

replace the x with -1 and multiply -3 and -1 which gives 3 and the subtract 5

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Which expression is equivalent to...

torisob [31]

Answer:

$x^{\frac{2}{7} } y^{-\frac{3}{5} } \\$ i.e answer A.

Step-by-step explanation:

This question involves knowing the following power/exponent rule:

$\sqrt[n]{x^m} = x^\frac{m}{n} \\\\so \sqrt[7]{x^2} = x^\frac{2}{7} \\\\and \\\\ \sqrt[5]{y^3} = y^\frac{3}{5} \\$

Next, when a power is on the bottom of a fraction, if we want to move it to the top, this makes the power become negative.

so the y-term, when moved to the top of the fraction, becomes:

$y^{-\frac{3}{5} } \\$

So the answer is: $x^{\frac{2}{7} } y^{-\frac{3}{5} } \\$

7 0

3 years ago

Which of the following is an integer?<br> 0.5<br> 1<br> 3/2

Vinil7 [7]

Yeah the answer is one

3 0

3 years ago

Read 2 more answers

The quotient of 7 and the sum of x and 1

Len [333]

Answer:

7÷(x+1)

Step-by-step explanation:

7÷(x+1)

5 0

3 years ago

A metronome uses an inverted pendulum rod to control tempo. A weight can be slid up the pendulum rod to decrease tempo, or down

Dominik [7]

Answer:

Part 1

Multiply both sides by 2π

2πf = √(g/L)

Square both sides

4π²f²= g/L

Invert both sides

1/(4π²f²) = L/g

Multiply both side by g

g/(4π²f²) = L

We usually write an equation with the subject (L) n the left

L = g/(4π²f²)

________________________

Part 2

Using the above equation with the given values:

L = g/(4π²f²)

. .= 9.8 / (4π² x 1.6²)

. .= 0.097m (= 9.7cm)

________________________

By the way, where it says

“f=1.6 then there are 2 beats a second, or 192 beats per minute (bpm).”

this should say

“f=1.6 then there are 3.2 beats a second, or 192 beats per minute (bpm)”

Step-by-step explanation:

7 0

3 years ago

How many possibe values of w can there be if w is a number between 39 and 56, w is an even number, and w is evenly divisible by

german

Answer: 3

Step-by-step explanation:

The numbers possible to begin with are 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56 (18 options)

Making it only evens brings it down to 40, 42, 44, 46, 48, 50, 52, 54, 56 (9 options)

Then divisible by three leaves 42, 48, 54 (3 options)

4 0

3 years ago