Story problem using repeated addition

Mathematics

2 answers:

KATRIN_1 [288]3 years ago

8 0

I had 7 donuts and I was supposed to have 10 so I made 2 more but the I still didn't have 10 so I made 1 more

Elis [28]3 years ago

7 0

How did the flower bloom? The first day, the flower grew a inch, the next day it grew 2inches then on the day after, it grew 3 inches. How many inches did it grow in all?

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3×0.7= <br> And could you please do the model

otez555 [7]

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2 years ago

Go step by step to reduce the radical.

zysi [14]

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2 years ago

The radius of a cylinder gift box is box is 3X +1 inches the height of the gift box is twice the radius what is the surface area

Genrish500 [490]

Answer:

The surface area of the gift box is = $A = \frac{1188}{7}x^{2}+ \frac{774}{7}x +\frac{132}{7}$

Step-by-step explanation:

The surface area of the cylinder can be calculated using this formula:

$A=2\pi rh+2\pi r^2$

in this case, r is not a number, but rather an expression, which is r = $3x +1$ .

The height of the gift box is twice the radius, which is h = $2(3x+1)= 6x+2$

To get our curved surface area, we carefully put the expressions for h and r into the equation.

$A = 2 \times \frac{22}{7} \times (3x+1) \times (6x+2) + 2 \times \frac{22}{7} \times (3x+1)^{2}$

$A = \frac{44}{7} (3x+1) \times (6x +2) + \frac{44}{7} (9x^{2} + 6x +1)\\A =\frac{132}{7}x + \frac{44}{7} \times (6x+2)+ \frac{396}{7}x^{2}+\frac{246}{7}x +\frac{44}{7}$