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slavikrds [6]
3 years ago
13

Find f(-4) if f(x) = -3x+5

Mathematics
1 answer:
Andreyy893 years ago
8 0
The answer 17 and I agree with her or him
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What’s the equation for 8 and 9 i need the answer asap
pickupchik [31]

Answer:

see explanation

Step-by-step explanation:

Calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

(8)

with (x₁, y₁ ) = (- 3, 2) and (x₂, y₂ ) = (8, 2)

m = \frac{2-2}{8+3} = \frac{0}{11} = 0

A slope of zero indicates the line is horizontal and parallel to the x- axis with equation

y = c

where c is the value of the y- coordinates the line passes through

The line passes through (- 3, 2) and (8, 2) with y- coordinates 2, thus

y = 2 ← equation of line

(9)

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

with (x₁, y₁ ) = (- 6, 1) and (x₂, y₂ ) = (- 3, 2)

m = \frac{2-1}{-3+6} = \frac{1}{3} , then

y = \frac{1}{3} x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (- 3, 2) , then

2 = - 1 + c ⇒ c = 2 + 1 = 3

y = \frac{1}{3} x + 3 ← equation of line

7 0
3 years ago
Describe how (2^3)(2^-4) can be simplifed
yanalaym [24]

Answer:

2^3\times2^{-4}=\frac{1}{2}

Step-by-step explanation:

The given expression is

(2^3)(2^{-4})

This is the  same as;

2^3\times2^{-4}

Recall that;

a^m\times a^n=a^{m+n}

This implies that;

2^3\times2^{-4}=2^{3+-4}

2^3\times2^{-4}=2^{-1}

We now use the following law of exponents

a^{-m}=\frac{1}{a^m}

This gives us;

2^3\times2^{-4}=\frac{1}{2}

7 0
3 years ago
In ΔEFG, f = 1.5 inches, ∠F=10° and ∠G=120°. Find the length of g, to the nearest 10th of an inch.
tankabanditka [31]

Answer:

the answer is 7.5

6 0
3 years ago
How to order 2.8, -2 3/4, 3 1/8, -2.2 least to greatest
sukhopar [10]
-2 3/4, -2.2, 2.8, 3 1/8.............
3 0
3 years ago
A survey of 80 sophomores at a certain western college showed that
DIA [1.3K]
<span>1. take English and niether of the other two? 
</span>36-6 that we know take all 3
This leave 30.
Subtract the 6 from those taking history and English.  Leaves 10.
Subtract the 10 from those taking English. 
This leaves 20.
Subtract the 6 from those taking political science and English.  Leaves 8.
Subtract 8 from those taking English.
Leaves 12
<span>
2. take none of the three courses? </span>
<span>
3. take history, but niether of the other two 
</span>Do the same with history as we did with English.
32-6 = 26 -10=16-10=6
<span>
4. take political science and history but not english 
</span>16-6 (that take all 3) = 10

Hope at least the partial answer helps!
3 0
3 years ago
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