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mr_godi [17]
3 years ago
9

Find the value of this expression if x = -4. x2 – 7 x + 1

Mathematics
1 answer:
Eduardwww [97]3 years ago
3 0

Answer:

First one equals -15

Second one equals -3

Step-by-step explanation:

(-4)*2 - 7

= (-8) - 7

= (-15)

(-4) + 1

= (-3)

Hopefully this helps.

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Please help me with math
Anna [14]

By observing the graph we can note down the following things about the boundary line:

  1. It has a positive slope.
  2. It cuts the X-axis at (5,0)
  3. It cuts the Y-axis at $(0,-x)$, where $|x|$ is some value less than 2 but greater than 1.

Let's look at the shaded region. The origin lies inside it.

Thus, the point $(0,0)$ satisfies the equation of the region.

Upon putting it in the options, we find that only two options: 2 and 4 satisfy the inequality $0<5$

Now find the Y-intercept of the boundary line:

Option 4) $0-2y=5$

$y=\frac{-5}{2}<-2$

Since it is smaller than -2, it is the wrong option.

Hence, correct option is $\boxed{x-3y<5}$

4 0
3 years ago
7 + 9y &lt; -3 (y - 5) + 4
Anuta_ua [19.1K]

Answer:

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Step-by-step explanation:

12y/12

12/12

5 0
3 years ago
-2 (3 + 5y -10) = 34
IrinaK [193]
-2 (3+5y-10) = 34
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Step 2) -10y+20=40
Step 3) -10y=20
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Answer is -2
7 0
3 years ago
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A gallon of paint covers 400 square feet how many square feet will 2 3 8th gallons of paint cover
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2 \frac{3}{8} /1=2 \frac{3}{8} &#10;
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3 years ago
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