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2 years ago

Activity #2

Mathematics

2 answers:

loris [4]2 years ago

7 0

Answer:

Step-by-step explanation:

1. The sum of 5 and 8. _5+ 8 _____ =13

2. The product of 3 and 4. _3*4____ = 12

3. The square of 8. __8^2____ = 64

4. The sum of a number and 3. __x+3___

5. 4 times a number subtracted from 78. _78-4x_____

vesna_86 [32]2 years ago

4 0

Answer:

thats all i know

Step-by-step explanation:

1.5+8

2.3×4

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As an office manager, you want to choose from buying a copier or renting one. You can buy one for $7000 with a fee of $30 a mont

Reptile [31]

Answer: you should rent one

Step-by-step explanation:

8 0

3 years ago

Multi step equation 3x+3-x+12=x+5

dlinn [17]

Answer:

x= -10

if u need explanation pls let me know

3 0

3 years ago

What's the answer for 3/4 (x+3)=9

Vitek1552 [10]

We want to solve the equation :

$\displaystyle{ \frac{3}{4}(x+3)=9$

first, multiply both sides by 4:

$\displaystyle{ \cancel{4} \cdot \frac{3}{ \cancel 4 }(x+3)=4\cdot 9$

$\displaystyle{ 3(x+3)=36$

divide both sides by 3:

$x+3=12$

add -3 to both sides:

$x=9$

Answer: x=9

3 0

3 years ago

Change to Scientific Notation<br> .0000000005

zimovet [89]

5x10^-10 is the answer

4 0

3 years ago

the diameter of a cylinder is 14cm.the height of the cylinder is 9cm. calculate the Volume and curved surface area

kicyunya [14]

Answer:

The volume is 1386 cm³ and curved surface area is 396 cm².

Step-by-step explanation:

Given that,

The diameter of a cylinder is 14 cm

Height of the cylinder is 9 cm

We need to find the volume and curved surface area .

If r is the radius, r = 14/2 = 7 cm

Volume of a cylinder is given by :

$V=\pi r^2 h\\\\V=\dfrac{22}{7}\times (7)^2 \times 9\\\\V=1386\ \text{cm}^3$

The curved surface area of the cylinder is given by :

$A=2\pi r h\\\\A=2\times \dfrac{22}{7}\times 7\times 9\\\\A=396\ \text{cm}^2$

So, the volume is 1386 cm³ and curved surface area is 396 cm².

3 0

3 years ago