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cricket20 [7]
3 years ago
13

What is the solution of the following quadratic inequality? x2 – 4x – 21 ≤ 0

Mathematics
2 answers:
Dominik [7]3 years ago
7 0

Answer:

3, and -7

Step-by-step explanation:

First factor the trinomial

y=x2−4x−21

.

Find 2 numbers knowing sum (-4) and product (c = - 21). They are the numbers in the factor pair (3, -7).

y = (x + 3)(x - 7)

Solving the 2 binomials, we get:

x = -3 and x = 7

trasher [3.6K]3 years ago
6 0

Answer: Its B

A number line going from negative 8 to 8. Closed circles are at negative 3 and 7. The line between the circles is shaded.

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Help please!!!!!!!!!!!!!
kaheart [24]

Answer:

53

Step-by-step explanation:

6x3=18

8-3=5

6+1=7

7x5=35

35+18=53

I hope this helps!

5 0
3 years ago
The volume of a box is 400in3. if the height is 10in and the length is 8in, what is the width of the box (volume=l•w•h)
tankabanditka [31]
10•8=80
so something times 80 will equal 400
80•5=400
6 0
3 years ago
When shopping for a personal loan, why is it important to limit the amount of loan applications you submit?
Korvikt [17]

Answer:

The best answer is actually, When shopping for a loan, do not submit too many applications. Each time you submit an application, the lender will do a hard inquiry on your credit score. Having too many hard inquiries at one time will negatively affect your credit and raise your interest rate.

this is 100% correct

4 0
3 years ago
Perpendicular lines intersect to form four right angles. never always sometimes
natima [27]

Answer:

Always

Step-by-step explanation:

The definition of a perpendicular line is that it intersects another at a 90 degree angle. Using this, by verticals, the opposite corner angle must also be 90-degrees, and since one side of a line is 180 degrees, 180-90 = 90, which ensure the rest of the angles will be 90 degrees too.

3 0
3 years ago
Read 2 more answers
What is the missing equation N÷6=8
solong [7]
48.

N/6 = 8
48/6 = 8
8 = 8
8 does indeed equal 8

Good luck! 


3 0
3 years ago
Read 2 more answers
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