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svet-max [94.6K]
3 years ago
13

Find the sum: (3x2 + 2x + 3) + (x2 + x + 1)

Mathematics
2 answers:
Elina [12.6K]3 years ago
7 0

Answer:

3 {x}^{2}  + 2x + 3 + ( {x}^{2}  + x + 1) \\  = 3 {x}^{2}  +  {x}^{2}  + 2x + x + 3 + 1 \\  = 4 {x}^{2}  + 3x + 4 \\ thank \: you

Korolek [52]3 years ago
6 0

Answer:

13

Step-by-step explanation:

hope this helps

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Tasha is five less than twice as old as his brother Nathan together their ages add up to 25 how old is Tasha and his brother Nat
Zolol [24]
2x-5=25
Add 5 to both sides
2x-5+5=25+5
2x=30
Now, divide both sides to find x
2x/2=30/2
x=15
Nathan is 15 years old
To find Tasha's age, subtract 25 and 15
Therefore, Tasha is 10 years old
Hope I helped!
6 0
3 years ago
Solve the inequality: −34 < −2(4x − 1)
Ne4ueva [31]

- 34 <  - 2(4x - 1) \\  - 34 <  - 8x + 2 \\  - 34 - 2 <  - 8x \\  - 36 <  - 8x \\ 36  > 8x \\  \frac{36}{8}  > x \\ x <   \frac{9}{2}

7 0
3 years ago
Jed rode his scooter to school at 20 miles per hour and then jogged back at 8 miles per hour. If the round trip took him 7 hours
Nostrana [21]

Answer:

196 Miles

Step-by-step explanation:

Jed Rode=20 miles per hour

jog back 8 miles per hour

28×7 = 196

6 0
2 years ago
Read 2 more answers
Denise is using a ladder to clean the outside of her second story windows. The ladder she is using is 24 feet long, and she puts
agasfer [191]
In order to solve this you have to use the pythagorean’s theorem, which is a^2+b^2=c^2. from the problem you can find out you have a=13ft and c=24ft. c is your hypotenuse. you then solve and you get b=20.17ft. you can check to make sure the answer is right, but that is how you solve it. And the ladder would reach 20.17ft.
3 0
4 years ago
The height of an object off the ground, h (in feet) t seconds after it is launched into the air is given by
creativ13 [48]

The average rate of change of h over the interval is -48 feet per second.

Given,

The height of an object off the ground, h (in feet) t seconds after it is launched into the air is given by

h(t) = −16t2 + 96t, 0 ≤ t ≤ 6.

We need to find the average rate of change of h over the interval [3, 6].

<h3>How do we find the average rate of change of a function over an interval?</h3>

If we have an interval [a, b] and a function f(x).

The rate of change is given by:

= f(b) - f(a) / b - a

We have,

h(t) = −16t² + 96t and [3, 6].

h(6) = -16 x 6² + 96 x 6 = -576 + 576 = 0

h(3) =  -16 x 3² + 96 x 3 = -144 + 288 = 144

The average rate of change of h is:

= h(6) - h(3) / 6 - 3

= 0 - 144 / 3

= -144 / 3

= -48

Thus the average rate of change of h over the interval is -48 feet per second.

Learn more about the average rate of change here:

brainly.com/question/23780823

#SPJ1

3 0
1 year ago
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