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kumpel [21]
3 years ago
9

What is 2*2^3 in expanded form?

Mathematics
1 answer:
katrin2010 [14]3 years ago
5 0

Answer:

16

Step-by-step explanation:

To solve this question,we will have to understand some symbols in mathematics...

For example,* means ×

/ Means÷

We have so many of them

So back to the question

2*2^3 means 2 multiply by 2 raise to the power of 3

So 2^3 is 8

Therefore,2*8 means 2×8

It equals to 16

Therefore the final answer is 16

I hope you understand it better now

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A spinner with three equal-sized sections marked A, B, C is spun 100 times. What is the theoretical probability of Landing on A?
zysi [14]
It will land on A 33 times or 33%
7 0
2 years ago
ABC bookstore sells one customer 12 used books and 4 new books for $120.
Ede4ka [16]

Answer:

One used book cost 5$ and a new book cost 15$

Step-by-step explanation:

\left \{ {{12u + 4n = 120} \atop {14u + 2n = 100}} \right. \\

lets multiply the second equation ×(-2)

×\left \{ {{12u + 4n = 120} \atop {(-2)*(14u + 2n = 100)}} \right. \\\\\left \{ {{12u + 4n = 120} \atop {-28u - 4n = -200}} \right. \\\\\\\left \ {{-16u + 0n = -80} \\,\\\left \ {{16u = 80}\\,\left \ {{u = 5} \\\\

if u = 5 then from equation 1

12*u + 4n = 120, 60 +4n = 120, 4n=120-60, n=60/4, n=15

7 0
3 years ago
Read 2 more answers
What is greater 0.5 or 2/4 plz help
n200080 [17]

Step-by-step explanation:

Both are equal

0.5 and 2/4 = ½ = 0.5

3 0
2 years ago
Read 2 more answers
In triangle ABC, ∠ABC=70° and ∠ACB=50°. Points M and N lie on sides AB and AC respectively such that ∠MCB=40° and ∠NBC=50°. Find
Sever21 [200]

Answer:

∠NMC  = 50°

Step-by-step explanation:

The interpretation of the information given in the question can be seen in the attached images below.

In ΔABC;

∠ A + ∠ B + ∠ C = 180°    (sum of angles in a triangle)

∠ A + 70°  + 50°  = 180°

∠ A = 180° - 70° - 50°

∠ A =  180° - 120°

∠ A =  60°

In ΔAMN ; the base angle are equal , let the base angles be x and y

So; x = y   (base angle of an equilateral  triangle)

Then;

x + x + 60° = 180°

2x +  60° = 180°

2x = 180° - 60°

2x = 120°

x = 120°/2

x = 60°

∴ x = 60° , y = 60°

In ΔBQC

∠a + ∠e + ∠b = 180°

50° + ∠e + 40° = 180°

∠e = 180° - 50° - 40°

∠e = 180° - 90°

∠e = 90°

At point Q , ∠e = ∠f = ∠g = ∠h = 90°  (angles at a point)

∠i  = 50° - 40° = 10°

In ΔNQC

∠f + ∠i   + ∠j = 180°

90° + 10° + ∠j = 180°

∠j  = 180° - 90°-10°

∠j  = 180° - 100°

∠j  = 80°

From  line AC , at point N , ∠y + ∠c + ∠j = 180°   (sum of angles on a straight line)

60° + ∠c + ∠80° = 180°

∠c  = 180° - 60°-80°

∠c  = 180° - 140°

∠c  = 40°

Recall that :

At point Q , ∠e = ∠f = ∠g = ∠h = 90°  (angles at a point)

Then In Δ NMC ;

∠d + ∠h + ∠c = 180°   (sum of angles in a triangle)

∠d + 90° + 40° = 180°

∠d  = 180° - 90° -40°

∠d  = 180° - 130°

∠d  = 50°

Therefore, ∠NMC = ∠d  = 50°

3 0
3 years ago
Which of the following sets of ordered pairs does NOT describe a function?
Sophie [7]
C because one x-value can ONLY have one corresponding y-value. It cannot have more than one.
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