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denis-greek [22]
2 years ago
14

Pls help me I’ll give 100 points

Mathematics
2 answers:
goblinko [34]2 years ago
5 0

Hi there!

So what we have to do here is...

turn 2³ - 1 into 2·2·2-1=4·2=8-1=7.

\frac{35}{7}=5

Final Result: 5

fredd [130]2 years ago
4 0

Answer:

Try option B

Step-by-step explanation:

sub to Pen Paper

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there are 176 slices of bread in 8 loaves. if there are the same number of slices in each loaf, how many slices of bread are in
Vaselesa [24]
5 loaves* (176 slices/ 8 loaves)= 110 slices.
(Note that the unit cancels out so you get the answer)

There are 110 slices of bread in 5 loaves~
4 0
3 years ago
Divid 15 into two parts such that the sum of their reciprocal is 3/10
Klio2033 [76]
From the information obtained from the question, two equations can be created:
 
Let x and z be the two numbers (parts)

\frac{1}{z}   +   \frac{1}{x}  =   \frac{3}{10} .  .  .  . (1)

z  +   x  =  15  .  .  .  . (2)

By transposing (2), make 'z' the subject of the equation
z = 15 - x  .  .  .  . (3)

By substituting (3) into equation (1) to find a value for x
\frac{1}{(15 - x)} + \frac{1}{x} = \frac{3}{10}

\frac{15}{( 15 - x ) ( x )}  =   \frac{3}{10}

3 ( - x^{2}  + 15 x )  =  150

3 x^{2}  - 45x + 150 = 0

⇒  ( x - 5 )  ( x - 10 )  = 0

∴ either ( x - 5) = 0        OR    ( x - 10 ) = 0

Thus x = 5 or x = 10

By substituting the values of x into (2) to find z

     z + (5) = 15       OR      z + (10) = 15

    ⇒      z = 10      OR                 z = 5

So, the two numbers or two parts into which fifteen is divided to yield the desired results are 5 and 10.





5 0
3 years ago
Alan has forgotten his 4-digit PIN code.
SVEN [57.7K]

Answer:

a lot of different answers

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
When (3,-2) is reflected across the x-axis the resulting image point is:
tankabanditka [31]

<em>3,2</em>

Step-by-step explanation:

Reflection across the x-axis:

(x,y) -> (x,-y)

In other words, you want to <u>change the sign of the y</u>.

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4 0
3 years ago
What is the area of a triangle with a base of five units and a height of 15 units
Leviafan [203]

Answer:

37.5

Step-by-step explanation:

5*15=75 then 75/2=37.5

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2 years ago
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