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2 years ago

Which of the following are needed to make an expression

Mathematics

2 answers:

KengaRu [80]2 years ago

7 0

Answer:

An expression is a syntactic construct. It must be well-formed: the allowed operators must have the correct number of inputs in the correct places, the characters that make up these inputs must be valid, have a clear order of operations, etc.

tatyana61 [14]2 years ago

5 0

Answer:

The Correct answer is variable (s)

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Please can someone help there 10 Points for it!!!!

torisob [31]

Answer:

a) The missing terms are 9, 13, 21 and 25.

b) If we know that $n_{1} = 9$ and $r = 4$ , then the n-th term of the sequence is represented by $n_{n} = 9 +4\cdot (n-1)$ .

Step-by-step explanation:

a) Given that elements of the sequence are found by increasing by the same amount, we infer that elements are part of an arithmetical progression. The rate of progression is now determined:

$3\cdot r = 29-17$

$3\cdot r = 12$

$r = 4$

The missing terms are:

$n_{1} = 17 - 2\cdot (4)$

$n_{1} = 9$

$n_{2} = 17 - 4$

$n_{2} = 13$

$n_{4} = 17 +4$

$n_{4} = 21$

$n_{5} = 17 + 2\cdot (4)$

$n_{5} = 25$

The missing terms are 9, 13, 21 and 25.

b) The formula for the arithmetical progression is represented by the following formula:

$n_{n} = n_{1} + r\cdot (n-1)$ (1)

Where:

$n_{1}$ - First element of the sequence.

$n$ - Indicator associated with the element of the sequence.

$r$ - Progression rate.

If we know that $n_{1} = 9$ and $r = 4$ , then the n-th term of the sequence is represented by $n_{n} = 9 +4\cdot (n-1)$ .

8 0

2 years ago

Money deposited $8000 into an account 6 years ago. The account earned simple interest at a yearly rate. So far the total interes

matrenka [14]

Answer:

2.5%

Step-by-step explanation:

interest = principal * rate * time

1200 = 8000r6

1200 = 48000r

r = 0.025

Rate for account is 2.5%

4 0

3 years ago

there are 3 boys for every 4 girls in mrs smiths class if there are 28 students in the class how many girls and how many boys ar

Rudiy27

Boys to girls ratio is 3:4 so for every 7 students 3 are boys and 4 are girls bc 3+4 is total students in the ratio. boys are 3/7 so out of 28 students there are 12 boys and girls are 4/7 so out of 28 students 16 are girls
12/28 are boys
16/28 are girls

6 0

3 years ago

Read 2 more answers

(x5 + y5) ÷ (x + y) please answer ASAP

Shkiper50 [21]

Answer:

$\frac{x^5+y^5}{x+y}=x^4-x^3y+x^2y^2-xy^3+y^4$

Step-by-step explanation:

Given the expression

$\left(x^5+y^5\right)\div \left(x+y\right)$

$\mathrm{Apply\:factoring\:rule:\:}x^n+y^n=\left(x+y\right)\left(x^{n-1}-x^{n-2}y+\:\dots \:-\:xy^{n-2}\:+\:y^{n-1}\right)\:\quad \quad \mathrm{n\:is\:odd}$