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3 years ago

What answer to 1+7v+9

Mathematics

2 answers:

Sveta_85 [38]3 years ago

8 0

Hey There!

In order to simplify this expression, you would have to combine the like terms.

9+1 = 10

Nothing else could be done, therefore the answer would be.

7v + 10

Hope this helped!

pishuonlain [190]3 years ago

3 0

First add the whole numbers without the variable:

$9 + 1 = 10$

Since 7v has a variable, don't include in 10. Add both of them:

$7v + 10 = 7v + 10$

Your answer is 7v + 10

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Factorize the Expression 81w^2 - 36wz + 4z^2

andre [41]

Answer:

( 9w - 2z)^2

Step-by-step explanation:

81w^2 - 36wz + 4z^2

Rewriting as

(9w)^2 - 2 * 9 w 2z + (2z)^2

We recognize that this is a perfect square binomial

a^2 -2ab + b^2 is a perfect square binomial because it factors to (a - b)^2

let a = 9w b = 2z

81w^2 - 36wz + 4z^2 = ( 9w - 2z)^2

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3 years ago

Using the formula c=2r, find the circumference with diameter of 28inches. Round your answer to the nearest inch.

Furkat [3]

Radius is equal to 1/2 the diameter. The radius is 14 (28/2=14)

With your formula:

c=2*14

c=28

HOWEVER I believe you meant

c=2(pi)r

In which

c=2(pi)14

c=28(pi)

In this instance for pi we can use 3.14 since we will be rounding anyway, so

c=28*3.14

c=87.92

Rounded to be

c=88

Note:

If we didn’t round pi out to 3.14 we would have gotten 87.964594...

5 0

3 years ago

A driver holds his breath for 186 seconds. How many minutes and seconds is that.

KATRIN_1 [288]

3 min. and 6 sec.
Hope this helps!

5 0

3 years ago

Read 2 more answers

A paper company needs to ship paper to a large printing business. The paper will be shipped in small boxes and large boxes. Each

Alla [95]

Answer:Number of small boxes shipped = 8

Number of large boxes shipped = 13

Step-by-step explanation:

Step-by-step explanation:

Let x be the number of small boxes and let y be the number of large boxes

According to the first statement, a total of 21 boxes were shipped

Equation 1 will be:

x+y=21

According to 2nd statement, the total weight was 1110 and we know the weight of one small box is 25 and large box is 70

Equation 2 will be:

25x+70y=1110

Use the substitution method for solving the equation

Putting the value of x in equation 2

25(21-y) +70y =1110

525-25y+70y = 1110

45y = 585

Y=13

Putting the value of y in equation 1

x+13 = 21

X = 8

Number of small boxes shipped = 8

Number of large boxes shipped = 13

4 0

3 years ago

The height in feet, h, of a model rocket t seconds after launch is given by the equation h(t) = 3+70t - 16t^2. The average rate

andriy [413]

Answer:

The average rate of change

$\frac{dh}{d t} = 70 (1) - 16(2t)$

At t = 1

$\frac{dh}{d t} = 70 (1) - 16(2t) = 38$

at t=3

Step-by-step explanation:

Step(I):-

The given function h(t) = 3+70t - 16t²

$\frac{dh}{d t} = 70 (1) - 16(2t)$

The $\frac{dh}{d t} = 70 (1) - 16(2t) =0$

70 - 32 t = 0

⇒ 70 = 32 t

⇒ $t = \frac{70}{32} = \frac{35}{16}$

Step(ii):-

The average rate of change in h(t) between t = 1 second and t = 3 second

$\frac{dh}{d t} = 70 (1) - 16(2t)$

At t = 1

$\frac{dh}{d t} = 70 (1) - 16(2t) = 38$

At t = 3

8 0

3 years ago