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Stella [2.4K]
3 years ago
12

How can you use 4s facts to find 7*8

Mathematics
1 answer:
Luda [366]3 years ago
5 0
 
→4(2)  which can be referred to as 4 + 4 

→14 (4)<span>= 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 </span>  which also equal  to → 4  + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 +4 + 4 +4 +4 + 4 +4 +4 
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How do you write x+y=9 in y=mx+b?
Alina [70]
Y=-x+9 is the correct answer
4 0
3 years ago
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Find the lateral surface area need help pls
elena55 [62]

lateral surface area of cylinder is = 2πrh

= 2 × 3.14 × 8 ×5

= 251.2 unit²

HOPE IT HELPS

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7 0
2 years ago
The sum of −7 times a number and 8 times the sum of the number and 1 is the same as the number minus 7.
Novay_Z [31]

Answer:

n has no value.

There is no solution to this equation

Step-by-step explanation:

let n be the number

In pieces:

sum of the number and 1: (n + 1)

8 times the sum: 8(n + 1)

-7 times a number: -7n

sum of -7 times and...: -7n + 8(n + 1)

number minus 7: n - 7

the same as: =

All together:

-7n + 8(n + 1) = n - 7

-7n + 8(n+1)=n-7

-7n + 8n+8=n-7

0=-15

3 0
2 years ago
Simplify the expression. Write your answer as a power. <br><br> (-3)^4/(-3)^1​
ELEN [110]

Step-by-step explanation:

Simplify the following:

(((-3)/4)^5)^2

Multiply exponents. (((-3)/4)^5)^2 = ((-3)/4)^(5×2):

((-3)/4)^(5×2)

5×2 = 10:

((-3)/4)^10

((-3)/4)^10 = (-3)^10/4^10:

(-3)^10/4^10

(-3)^10 = (-1)^10×3^10 = 1×3^10:

3^10/4^10

4^10 = (4^5)^2 = (4×4^4)^2 = (4 (4^2)^2)^2:

3^10/(4 (4^2)^2)^2

4^2 = 16:

3^10/(4×16^2)^2

3^10/(4×256)^2

4×256 = 1024:

3^10/1024^2

3^10/1048576

Answer=3^10 / 2^20

5 0
3 years ago
Which equation results from adding the equations in this system? 11 x minus 3 y = -17. Negative 4 x + 3 y = - 18.
marta [7]

Answer:

Therefore the results from adding the equation in this system is

7x=-35

Step-by-step explanation:

Given:

Equations as

11x-3y=-17         .......................1

-4x+3y=-18         .......................2

To Find :

Result when adding equation 1 and 2 = ?

Solution

On adding equation 1 and 2 the "3y" term will get cancel and the like terms will combine that is add (11x and -4x ) and ( -17 and - 18)  as shown below

           11x     -    3y    = -17

           -4x    +   3y     = - 18

-------------------------------------------

           7x     + 0        =  - 35

---------------------------------------------

Therefore the results from adding the equation in this system is

7x=-35

7 0
3 years ago
Read 2 more answers
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