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3 years ago

Using the order of operations, what should be done first to evaluate (-4)² +6+(-3+4) (2) -5?

Mathematics

2 answers:

Elan Coil [88]3 years ago

8 0

Add -3 and 4 because it is in parenthesis.

crimeas [40]3 years ago

6 0

Answer:

The answer is C

Step-by-step explanation:

This is because acoording to the order of operations or PEMDAS you do the perantheses first.

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All of the following are irrational except _____.

a_sh-v [17]

The number that is not irrational is $1.\overline{45}$ . The correct option is the second option $1.\overline{45}$

<h3>Irrational numbers </h3>

From the question, we are to determine which of the given options is not irrational

Irrational numbers are the set of real numbers that cannot be expressed in the form of a fraction, p/q, where p and q are integers.

$1.\overline{45}$ is a repeating decimal and it can be expressed as a fraction

$1.\overline{45} = \frac{144}{99}$

∴ $1.\overline{45}$ is not an irrational number. It is a rational number

The other options cannot the expressed as a fraction.

Hence, the number that is not irrational is $1.\overline{45}$ . The correct option is the second option $1.\overline{45}$

Learn more on Irrational numbers here: brainly.com/question/11919233

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2 years ago

HELP ASAP!! Which representation shows y as a function of x ?

Marat540 [252]

Answer:

It is the first answer

Step-by-step explanation:

For it to be considered a function, each x-value can only corresponds (have) one y-value, however, y-values (even if they are the same y-value) can have multiple different x-values.

6 0

2 years ago

How do i solve 7x^{2} +11y^{2} =40

svetoff [14.1K]

Answer:

Step-by-step explanation:

There is no solution as you have two variables and only one equation. The best you can do is solve for one variable as a function of the other.

$7x^2+11y^2=40\\ \\ 11y^2=40-7x^2\\ \\ y^2=\frac{40-7x^2}{11}\\ \\ y=\sqrt{\frac{40-7x^2}{11}}$

6 0

3 years ago

If the simple interest on $2000 for 3 years is $300, then what is the interest rate?

ivann1987 [24]

$~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\dotfill &\$300\\ P=\textit{original amount deposited}\dotfill & \$2000\\ r=rate\to r\%\to \frac{r}{100}\\ t=years\dotfill &3 \end{cases} \\\\\\ 300=(2000)(r)(3)\implies 300=6000r\implies \cfrac{300}{6000}=r \\\\\\ \cfrac{1}{20}=r\implies 0.05=r\implies \stackrel{\textit{converting to percent}}{100\cdot 0.05}\implies \stackrel{\%}{5}=r$

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2 years ago

The following is the correct way to show the product for 0.297×7.1:

ZanzabumX [31]

The answer is 2.1087

3 0

3 years ago