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2 years ago

(3^2 +4) -6+4= {^ means power to...}

Mathematics

1 answer:

Misha Larkins [42]2 years ago

4 0

The awnser is 11
1. 3*3=9
2. 9+4=13
3. 13-6=7
4. 7+4=11

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66 is 3/4 of what number

Anarel [89]

Answer:88

Step-by-step explanation:

Divide 66 by 3 (66/3)

Then you should get 22

Multiply 22 by 4 (22 x 4)

Answer: 88

3 0

2 years ago

Can you find the unknown variable (straight line is 180 degrees

Ymorist [56]

Answer:do you have a picture ?

Step-by-step explanation:

5 0

3 years ago

claire mixes 2 1/2 cups of water with 1/3 cup of orange juice concentrate. Han mixes 1 2/3 cups of water with 1/4 cup of orange

cricket20 [7]

Answer:

Han's mixture tastes stronger, because...

Han's uses 6 2/3 cups of water for every 1 cup of orange juice concentrate.

Clare uses 7 1/2 cups of water for every 1 cup of orange juice concentrate.

Step-by-step explanation:

Claire

Cups of water = 2 1/2 cups

Cups of orange juice = 1/3

Cups of water for every cup of orange juice = 2 1/2 ÷ 1/3

= 5/2 × 3/1

= 15/2

= 7 1/2

Han:

Cups of water = 1 2/3 cups

Cups of orange juice = 1/4 cups

Cups of water for every cup of orange juice = 1 2/3 ÷ 1/4

= 5/3 × 4/1

= 20/3

= 6 2/3

3 0

2 years ago

Identify the 8th term of the given geometric sequence. 1/2, 2, 8, 32,...

IrinaK [193]

<h3>Geometric sequence.</h3>

A geometric sequence goes from one term to the next by always multiplying or dividing by the constant value except 0. The constant number multiplied (or divided) at each stage of a geometric sequence is called the common ratio (r).

We have:

$a_1=\dfrac{1}{2}\\\\a_2=2\\\\a_3=8\\\\a_4=32\\\vdots$

Find the common ratio:

$\boxed{r=\dfrac{a_n}{a_{n-1}}}\Rightarrow r=\dfrac{2}{\frac{1}{2}}=\dfrac{8}{2}=\dfrac{32}{8}=...\\\\\boxed{r=4}$

<h3>The formula of the n-th term of a geometric sequence:</h3>

$\boxed{a_n=a_1\cdot r^{n-1}}$

Substitute:

$a_1=\dfrac{1}{2},\ r=4,\ n=8\\\\a_8=\dfrac{1}{2}\cdot4^{8-1}=\dfrac{1}{2}\cdot4^7=\dfrac{1}{2}\cdot16384\\\\\huge\boxed{a_8=8192}$

<h3>Method step by step:</h3>

$a_4=32,\ r=4\\\\a_5=a_4\cdot r\Rightarrow a_5=32\cdot4=128\\\\a_6=a_5\cdot r\Rightarrow a_6=128\cdot4=512\\\\a_7=a_6\cdot r\Rightarrow a_7=512\cdot4=2048\\\\a_8=a_7\cdot r\Rightarrow a_8=2048\cdot4=8192$

3 0

1 year ago

To be able to say with 95% confidence level that the standard deviation of a data set is within 10% of the population's standard

boyakko [2]

The answer in this question is 97.
0.20 SD = 1.96 SD / sqrt(n)
n = (1.96 / .200)^2
n = 96.04
Which is rounded Up to 97
The number of observations within the data set must be greater than or equal to the quantity of 97.

8 0

3 years ago