3 years ago

What is the standard form for this equation (x+2) (x+15)

Mathematics

1 answer:

MissTica3 years ago

4 0

Answer:

x^2 + 17x + 30

Step-by-step explanation:

Just multiply the components from first bracket to components of second bracket, then add like terms and rearrange to write numbers from highest exponents to lowest.

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If an object is propelled upward from a height of 72 feet at an initial velocity of 90 feet per second, then its height h after

kifflom [539]

Answer:

6.34 seconds.

Step-by-step explanation:

The object will hit the ground when h = 0.

-16t^2 + 90t + 72 = 0

8t^2 - 45t - 36 = 0

We can then use the quadratic formula to solve.

[please ignore the A-hat; that is a bug]

$\frac{45±\sqrt{45^2 - 4 * 8 * -36} }{2 * 8}$

= $\frac{45±\sqrt{2025 + 1152} }{16}$

= $\frac{45±\sqrt{3177} }{16}$

= $\frac{45±56.36488268}{16}$

(45 - 56.36488268) / 16 = -0.7103051678

(45 + 56.36488268) / 16 = 6.335305168

Since the time cannot be negative, the object will hit the ground after about 6.34 seconds.

Hope this helps!

4 0

3 years ago

Find the 100th term of an=17-4(n-1)

egoroff_w [7]

Answer:

Find the 100th term of an=17-4(n-1)

Step-by-step explanation:

Arithmetic sequence : -17, -14, -11, -8, ...

Here the first term , a 1 = -17

Common difference : d = -14 - (-17) =3

4 0

2 years ago

Read 2 more answers

Solve the equation for x 25=1/x

Mkey [24]

Answer:

x = 1/25

Step-by-step explanation:

Solve for x:

25 = 1/x

25 = 1/x is equivalent to 1/x = 25:

1/x = 25

Take the reciprocal of both sides:

Answer: x = 1/25

5 0

3 years ago

A contractor cut 28 feet of wire into sections that were 4 2/3 feet long. How many pieces of wire did the contractor have?

Alisiya [41]

6

28 divided by 4 2/3=6
:)

3 0

3 years ago

Solve 2x + 4 > 16<br> A. X < 6<br> B. X > 6<br> C. X < 10<br> D. X > 10

Korvikt [17]

Answer:

2(6)+4 > 16 x > 6 2(7) + 4 > 16

12+4=16 14+4>16 18>16

8 0

4 years ago