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3 years ago

Solve this!

Mathematics

1 answer:

Reptile [31]3 years ago

5 0

Withdraw- remove
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Complete this table 3° 3 32 38 34 35 36 1 3 9 27 729

sveta [45]

3⁴= 3×3×3×3= 81

3⁵= 3×3×3×3×3= 243

hope it helps! please mark me brainliest

thank you!! have a good day ahead..

8 0

3 years ago

Read 2 more answers

Determine the value of base x if (211)x = (6A)16

igor_vitrenko [27]

$211_x=2x^2+x+1$
$6A_{16}=106_{10}$

$\implies 2x^2+x+1=106\iff 2x^2+x-105=(x-7)(2x+15)=0$

This has two solutions, $x=7$ and $x=-\dfrac{15}2$ .

4 0

4 years ago

2(4 – 2r) = -2(r + 5) How do you know if it's identity or no solution and show work

lesantik [10]

Answer: r = 9

Step-by-step explanation:

2(4 - 2r) = -2(r + 5)

8 - 4r = -2r - 10 distributed

8 = 2r - 10 added 4r to both sides

18 = 2r added 10 to both sides

9 = r divided both sides by 2

***********************************************************************************

Identity is when you end up with a TRUE statement after moving the x-values to one side of the equation.

For example: 2x + 2 = 2(x + 1)

2x + 2 = 2x + 2 distributed

2 = 2 subtracted 2x from both sides

TRUE so x is all real numbers

No Solution is when you end up with a FALSE statement after moving the x-values to one side of the equation.

For example: 2x + 1 = 2(x + 1)

2x + 1 = 2x + 2 distributed

1 = 2 subtracted 2x from both sides

FALSE so there are no solutions

5 0

4 years ago

8/2(2+2)=? 100 points to the best answer!

Effectus [21]

Answer:

Step-by-step explanation:

8/2(2+2)

- According to the rules of BEDMAS, solve the values inside the bracket.

8/2 (4)

- Simplify the fraction outside the bracket.

4(4)

- Multiply the two values.

= 16

7 0

3 years ago

Read 2 more answers

A school teacher wants to survey students at her elementary school. She surveys 20 students from each grade level. What type of

Elan Coil [88]

Answer:

Stratified Random sampling

Step-by-step explanation:

When a random observations are selected from a number of individual groups in a particular population, the type of sampling technique is called Stratified Random sampling. Stratified Random sampling begins with the partitioning or splitting or a population into subgroups. A number of random selection are then made from each of the subgroups to form a collection of larger samples. This is different from the simple random sampling technique which makes random selection directly from a larger sample or population without prior partitioning of the population. The different grades of students represents the individual stratum from which random selections are made.

4 0

3 years ago