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jok3333 [9.3K]
3 years ago
13

(x - 4)(x + 5) need help asap​

Mathematics
2 answers:
sergij07 [2.7K]3 years ago
8 0

Answer:

x^2+x-20

Step-by-step explanation:

(x-4)(x+5)= \\\\(x)(x)+(5)(x)+(-4)(x)+(-4)(5)= \\\\x^2+5x-4x-20= \\\\x^2+x-20

Hope this helps!

mash [69]3 years ago
7 0
X (squared) +x−20

(x+−4)(x+5)=(x)(x)+(x)(5)+(−4)(x)+(−4)(5)=x(squared)+5x−4x−20=x2+x−20
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HOW MANY GROUPS OF 10 ML ARE IN 1 LITER
earnstyle [38]
Well there is 1000ml in 1l
10x10=100x100=1000
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So it is 100 groups of 10
8 0
3 years ago
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Find the perimeter of a regular pentagon with sides of (3x + 5).
kotegsom [21]

Answer:

  5(3x + 5)   or   15x + 25

Step-by-step explanation:

A regular pentagon has 5 sides of equal length. The perimeter is the sum of the lengths of those sides. We can use multiplication to find the sum of 5 of the same value:

  P = 5(3x +5)

Perhaps you want it expanded. Using the distributive property, we multiply each term in parentheses by 5:

  P = 15x + 25

4 0
4 years ago
write an equation in slope intercept form for the line that has a slope of 4 and passes through the point (3,24)​
Paladinen [302]

Answer:

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Step-by-step explanation:

7 0
3 years ago
Which graph represents the equation -5x+4y>-1?
galben [10]
<h3>Answer: Choice D</h3>

======================================================

Explanation:

The inequality sign has an "or equal to", which means the boundary line will be solid. We can rule out choices B and C because they have dashed boundary lines.

A solid boundary line means that points on the boundary are part of the solution set.

Now let's see what happens when we plug in a point like (x,y) = (4,0). This will tell us how to shade the blue region.

-5x + 4y \ge -1 \\\\-5(4) + 4(0) \ge -1 \\\\-20 \ge -1 \\\\

This is false because -20 is not larger than -1. It's the other way around.

This tells us the point (4,0) is not in the blue shaded region, and it's not on the boundary line either. We can rule out choice A because of this.

The only thing left is choice D, which is the final answer. I recommend plugging a point from this region into the inequality to confirm we have a true statement.

6 0
3 years ago
Solve, using the substitution method.
galben [10]
Y – 3x = 7
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y = 7+3x

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The answer is  B.There are an infinite number of solutions.



6 0
3 years ago
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