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kati45 [8]
3 years ago
8

Evaluate ƒ(x) = –4x – 5 for x = –1.

Mathematics
1 answer:
Alenkinab [10]3 years ago
7 0

Change your f(x) to y.(they are pretty much the same thing)

Plug in your -1 into the 'x' spot.

-4(-1)-5

multiply -4 and -1 to get 4(negative times a negative = a positive)

4-5

subtract.

-1

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What is the equation of the line that passes through the point (5,-1) and has a slope of a fraction 1/5
sp2606 [1]

Answer:

Equation will be y = 5x + c

Step-by-step explanation:

For point (5, 1)

1 = 5(5) + c

Or, c = - 24

So, y = 5x - 24

3 0
3 years ago
The blueprint of a concrete patio has a scale of 2 in. = 3 ft You want to find the dimensions of a new blueprint of the patio wi
LenKa [72]

Answer:

If\ old\ scale\ is\ taken:\ Length=45\ ft,\ Width=42\ ft\\\\If\ new\ scale\ is\ taken:\ Length=36\ ft,\ Width=33.6\ ft

Step-by-step explanation:

Older Scale:

2\ in=3\ ft\\\\\Rightarrow 1\ in=\frac{3}{2}\ ft\\\\Length=30\ in\\\\Length=30\times \frac{3}{2}\ ft\\\\Length=45\ ft\\\\Width=28\ in\\\\width=28\times \frac{3}{2}\ ft\\\\width=42\ ft

New scale:

4\ in=5\ ft\\\\\Rightarrow 1\ in=\frac{5}{4}\ ft\\\\Length=30\ in\\\\Length=30\times \frac{5}{4}\ ft\\\\Length=36\ ft\\\\Width=28\ in\\\\width=28\times \frac{5}{4}\ ft\\\\width=33.6\ ft

4 0
3 years ago
I need some help please
Tresset [83]

Step-by-step explanation:

=  \frac{ {2}^{4} }{ {2}^{7} }

=  {2}^{4 - 7}

=  {2}^{ - 3}

=  \frac{1}{ {2}^{3} }

=  \frac{1}{2 \times 2 \times 2}

=  \frac{1}{8}

The answer is not 8, but 1/8.

7 0
2 years ago
Two companies rent moving trucks. Pack and Go charges a $39.95 flat fee, and $0.45 for every mile driven. U-Drive charges a $59.
Kisachek [45]

Answer:

The indifference point is 200 miles

Step-by-step explanation:

<u>First, we need to establish the total cost formula for each company:</u>

Pack and Go:

Total cost= 39.95 + 0.45x

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U-Drive:

Total cost= 59.95 + 0.35x

x= miles driven

<u>Now, we equal both formulas and isolate x:</u>

39.95 + 0.45x = 59.95 + 0.35x

0.1x = 20

x= 200 miles

The indifference point is 200 miles

4 0
3 years ago
Please help brainlyest to correct
Ksenya-84 [330]

Answer:

22961.5 cm^{2}

Step-by-step explanation:

V = \pi r^{2} h

30/2 = 15 (to find radius, r)

V = 3.14 * 15^{2}  * 325

V = 22961.5 cm^{2}

6 0
3 years ago
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