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3 years ago

11

Roxanna has a collection of silver spoons from all over the world.

1 answer:

Vikentia [17]3 years ago

6 0

50 because spoons 15 so desk 14 seat 10

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Find the surface area of the pyramid round to the nearest tenth choose the correct unit

sineoko [7]

slant height(h) = 16.3ft

Base side = 20ft

$\text{Area of pyramid=}\frac{1}{2\text{ }}\times perimeterofbase\text{ x slant height}$

Perimeter of base = 4(base side) = 4(20) = 80ft

$\begin{gathered} \text{Area of pyramid = }\frac{1}{2}\times80\times16.3 \\ \text{Area = }652ft^2 \end{gathered}$

7 0

1 year ago

Find the fifth term in the sequence that is defined as follows a1=1. An=3an-1+2

faltersainse [42]

The fifth term in the sequence would be 161.

Step-by-step explanation:

We have to find the fifth term in the sequence $an=3a(n-1)+2$

Given that

a1 = 1 (that is the first term)

If we follow the formula, the value of every term depends on the value of immediate lower term. Therefore, the a2 can be calculated by putting 2 in place of n in above equation

$a2=3a(2-1)+2$

$a2=3a1+2$

$a2=3(1)+2$ as a1 = 1

$a2=5$

Similarly,

$a3=3a(3-1)+2$

$a3=3a2+2$

$a3=3(5)+2$ as a2 = 5

$a3=17$

and

$a4=3a(4-1)+2$

$a4=3a3+2$

$a4=3(17)+2$ as a3= 17

$a4=53$

and

$a5=3a(5-1)+2$

$a5=3a4+2$

$a5=3(53)+2$ as a4 = 53

$a5=161$

Therefore, the fifth term in the sequence would be 161.

Learn more:

The following links have more information about sequencing

brainly.com/question/7221312

Keywords: sequence, arithmetic series

#learnwithBrainly

6 0

4 years ago

7. Jena has a triangular garden with a perimeter that can be represented by 25r ^ 2 - 9r + 14 . The sum of two sides of the gard

galben [10]

Answer: $15r^2-21r+5$

Step-by-step explanation:

Given: Perimeter of triangular garden = $25r^2 - 9r + 14$

The sum of two sides of the garden = $10r^2 + 12r + 9$

Perimeter is the sum of all sides of a triangle.

Third side = Perimeter of triangular garden - sum of two sides of the garden

$=25r ^ 2 - 9r + 14-(10r ^ 2 + 12r + 9)\\\\=25r ^ 2 - 9r + 14-10r ^ 2 - 12r - 9\\\\=15r^2-21r+5$

The expression represent the third side = $15r^2-21r+5$ .

5 0

3 years ago

Evaluate the expression when z = 8.<br> 6z

katovenus [111]

Answer:

$48$

Step-by-step explanation:

Our expression:

$6z$

If we know $z=8$ , let's substitute $z$ , for $8$ , in our expression:

$6(8)$

Multiply:

$6(8)=48$

6 0

4 years ago

PLZ HELP 20 POINT

ddd [48]

Answer:

$1.98

Step-by-step explanation:

125.89 x 0.0157 = 1.97 rounded to 1.98

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4 0

4 years ago