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3 years ago

What is the surface area of the regular pyramid?

Mathematics

2 answers:

zimovet [89]3 years ago

5 0

You would have to do 18x2 then 14x2.

olga2289 [7]3 years ago

5 0

Answer:

Step-by-step explanation:

Surface area = $lw+l\sqrt{(\frac{w}{2})^2+h^2}+w\sqrt{(\frac{l}{2})^2+h^2}$

just put the values in the formula h=18,w=14,l=14

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Please give me an answer for that equations

Zolol [24]

Answer:

S1: 8 = 11x + 8

S2: 0 = 11x

S3: x = 0

S1: 6x = 2x + 24

S2: 4x = 24

S3: x = 6

Step-by-step explanation:

S1: Add like terms (5x+6x)

S2: Subtract 8 from both sides to get x by itself

S3: divide by 11 (anything that divides/is divided by 0 is 0)

S1: Add 7 to the other side

S2: Subtract 2x to the other side

S3: divide 24 by 4

7 0

3 years ago

Expand and simplify 4 (3a-4)

Anettt [7]

Answer:

$a=\frac{4}{3}$

Step-by-step explanation:

In this situation, we need to first do the distributive property.

$4 (3a-4)= 12a -16$

I am assuming that the equation would be equal to zero....

$12a-16=0$

Add 16 to both sides

$12a=16$

Divide 12 to both sides

$a=\frac{16}{12}$

Simplify

$a=\frac{4}{3}$

7 0

3 years ago

Read 2 more answers

Determine the slope of the line passing through the points (5,6) and (-5,-1)m=____

EleoNora [17]

GIVEN:

We are given two points on a line and these are;

$A=(5,6),\text{ }B=(-5,-1)$

Required;

We are required to determine the slope of the line passing through these points.

Step-by-step solution;

The slope of a line is given by the formula;

$m=\frac{y_2-y_1}{x_2-x_1}$

The variables are;

$\begin{gathered} (x_1,y_1)=(5,6) \\ \\ (x_2,y_2)=(-5,-1) \end{gathered}$

We can now substitute these into the formula and then simplify;

$\begin{gathered} m=\frac{-1-6}{-5-5} \\ \\ m=\frac{-7}{-10} \\ \\ m=\frac{7}{10} \end{gathered}$

ANSWER:

The slope of the line passing through the given points is;

$m=\frac{7}{10}$

6 0

10 months ago

Which expression is equivalent to -32 to 3/5 power

levacccp [35]

<u>Answer:</u>

<u>Step-by-step explanation:</u>

We are given the following expression and we are to find the simplest form of this expression:

$- 3 2 ^ { \frac { 3 } { 5 } }$

First of all, we will factor the coefficient:

$3 2 = 2 ^ 5$

Rewriting it as:

$- ( 2 ^ 5 ) ^ { \frac { 3 } { 5 } }$

Applying the exponent rule $(a^b)^c = a^{bc}$ to get:

$-2^{5.\frac{3}{5}}=-2^3$

$-2^3=-8$

6 0

3 years ago

Riverside Elementary School is holding a school-wide election to choose a school color. Five-eighths of the votes were for blue,

Mnenie [13.5K]

Answer:

Step-by-step explanation:

Let the total number of votes to choose a color = x

Number of votes for blue = $\frac{5}{8}\times x$

Remaining votes = x - $\frac{5}{8}\times x$

= $\frac{8x-5x}{8}\times x$

= $\frac{3}{8}\times x$

Votes for green = $\frac{5}{9}\times (\text{Remaining votes})}$

= $\frac{5}{9}\times \frac{3x}{8}$

= $\frac{5}{24}\times x$

Finally remaining votes = $\frac{3x}{8}-\frac{5x}{24}$

= $\frac{9x-5x}{24}$

= $\frac{4x}{24}$

= $\frac{x}{6}$

Since these votes are for red therefore,

$\frac{x}{6}$ = 48

x = 48×6

= 288

a) Votes for blue are $\frac{5x}{8}$

Therefore, exact number for blue votes = $\frac{5\times 288}{8}$

= 5×36

= 180

b). Votes for green = $\frac{5x}{24}$

= $\frac{5\times 288}{24}$

= 60

c). Since 25 students were absent on that day of the vote, number of students at Riverside Elementary School = 288 + 25

= 313

d). Since seven tenths of the votes for blue were made by the girls.

Therefore, number of girls voted for blue = $\frac{7}{10}\times 180$

= 7×18

= 126

Since total votes made = 288

Therefore, half of the votes made = $\frac{288}{2}$

= 144

Now it's clear that number of votes made by girls is less than half of all the votes.

e). 126 girls voted for blue.

5 0

3 years ago