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loris [4]
3 years ago
12

5x-3=19? Answer for Brainliest

Mathematics
1 answer:
vampirchik [111]3 years ago
4 0

Answer:

x = 4.4

Step-by-step explanation:

I'm going to assume you want to solve for x so here we go.

You need to work backwards for this equation, and whatever you do to the LHS, you do to the RHS.

First, you need to remove the minus 3, which means that on both sides, you add 3. Adding three on the LHS makes the -3 disappear, and adding 3 on the RHS makes the 19 go to a 22.

Your equation is now 5x=22.

Since 5x means 5 × x, to get rid of it, you need to divide 5x by 5. Doing it to the LHS will make the five disappear, and doing it to the RHS will make it go to 22 ÷ 5 which equals 4.4

Therefore, x = 4.4

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Ilya [14]

perpendicular means negative reciprocal so it would be -1/3

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3 years ago
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Which of the following could describe the y-intercept?
lora16 [44]

Answer:

2,2

Step-by-step explanation:

6+7+8+0×0=0-6-6-6-6+7+7+8+4×0=0

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By rounding to 1 significant figure , estimate <br><br> 40.73 x 1.06<br><br> Anyone know?
suter [353]

ANSWER: 40

EXPLANATION:

1) 40.73 to 1 significant figure = 40.

2) 1.06 to 1 significant figure = 1.

3) Therefore, we just multiply 40 by 1, which equals 40.

FURTHER EXPLANATION (IF NEEDED):

With significant figures, whole numbers such as 10, 20, 50 etc. have 1 significant figure. This is because the 0 does not count as a significant figure.

With decimals, all numbers after the decimal point are also included as significant figures (even 0). E.g. 40.73 has 4 significant figures and 1.06 has 3 significant figures.

EXAMPLES (IF NEEDED):

Rounding to 2 significant figures:

  • 40.73 = 42
  • 1.06 = 1.1

Rounding to 3 significant figures:

  • 40.73 = 40.7
  • 1.06 = 1.06 (because it's already in 3 significant figures)

Rounding to 4 significant figures:

  • 40.73 = 40.73 (already in 4 significant figures)
  • 1.06 = 1.060 (0 is counted as a significant figure if there is a decimal or another number comes after that 0)

E.g. 1006 has 4 sig figs, while 1060 would have 3 sig figs because the last 0 is not counted as a significant figure. 10.60 would have 4 sig figs because of the decimal.

8 0
3 years ago
Convert binary into octal number system<br>(1011010)<br>(1010111)​
stiv31 [10]

the number 1010111 in binary is equivalent to 127 in octal.

the number 1011010 in binary is equivalent to 132 in octal.

6 0
3 years ago
Help please thank you
lara31 [8.8K]

One of the rules of logarithms is as follows;

\begin{gathered} \log _ab=x \\ Is\text{ equivalent to,} \\ a^x=b \end{gathered}

We can now insert the corresponding values in the question provided, as shown below;

\begin{gathered} \log _2\frac{1}{16}=-4 \\ \text{This is equivalent to,} \\ 2^{-4}=\frac{1}{16} \end{gathered}

Note that, one of the rules of exponents, states that a number when raised to the power of a negative value, is equivalent to the reciprocal of that expression. An example is shown below;

a^{-x}=\frac{1}{a^x}

Therefore, our equation can now be re-written as follows;

\begin{gathered} 2^{-4}=\frac{1}{16} \\ \frac{1}{2^4}=\frac{1}{16}^{} \\ \frac{1}{16}=\frac{1}{16} \end{gathered}

However, the question requires the answer to be expressed in exponential form. Therefore,

\log _2\frac{1}{16}=2^{-4}

4 0
2 years ago
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