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nekit [7.7K]
2 years ago
14

Please help the diagram shows a cube and a cuboid

Mathematics
1 answer:
Dafna11 [192]2 years ago
5 0

Answer:

2197 cm³

Step-by-step explanation:

surface area of cuboid = 2 * (5*9 + 33*9 + 33*5) = 1014

surface area of cube = 6 * x²   .... x: side length of cube

6x² = 1014

x² = 169

x = 13

volume of cube = x³ = 13³ = 2197 cm³

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Add the fractions and simplify 5 2/5 + 2 10/13=
HACTEHA [7]
Simple....

you have:

5 \frac{2}{5} +2 \frac{10}{13}

to convert them into improper fractions:

1.) Take whole number*denominator 

(5*5=25)

2.) Take what you got...and add the numerator

(25+2=27)

3.) Use the original denominator

\frac{27}{5}

Do the same to the other one...

2*13=26

26+10=36

\frac{36}{13}

Now..add...

\frac{27}{5} + \frac{36}{13}

But..you need a common denominator!

\frac{27}{5} * \frac{13}{13}= \frac{351}{65}

\frac{36}{13} * \frac{5}{5} = \frac{180}{65}

Now you can add!

\frac{351}{65} + \frac{180}{65} = \frac{531}{65}

When simplified....

8 \frac{11}{65}

Thus, your answer.






6 0
3 years ago
PLZ I REALLY NEED THIS RIGHT AWAY!!! I’ll GIVE YOU BRAINLIST!!!
bearhunter [10]
They are all being multiplied by 4
8 0
2 years ago
PLS HELP AND EXPLAINNN
Alekssandra [29.7K]

Answer:

A≈254 cm^2

Step-by-step explanation:

The area of a circle is given by formula:  π r^2

π  has a constant value of  3.14  And the radius of the circle is  9 c m

the area= π r^2 = 3.14 x (9)^2 cm^2

= 3.14 × ( 81 )

= 254.34 c m^2

≈ 254 c m^2

4 0
2 years ago
Which of the following equations represents the line graphed below?
Mars2501 [29]

Answer:

y= -2x +3

Step-by-step explanation:

This is because the slope is 2 using rise over run and the y-intercept is 3 because it meets at that point, (0,3) on the number line.

5 0
3 years ago
If sin(2x + 7)degrees =cos(4x-7)degrees, what is the value of x?
nikklg [1K]

Answer:

x = 15

Step-by-step explanation:

cosx = sin(\frac{\pi}{2} - x)

sin x = sin y = > x = sin^{-1}(sin y) = y => x = y

sin(2x + 7)^{\circ} = cos(4x - 7)^{\circ}\\\\sin(2x + 7)^{\circ} = sin(\frac{\pi}{2} - (4x - 7))\\\\(2x + 7) = (\frac{\pi}{2}- (4x -7))\\\\2x + 7 = \frac{\pi}{2} - 4x + 7\\\\6x = \frac{\pi}{2}\\\\x = \frac{\pi}{12}

x = 15

8 0
2 years ago
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