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3 years ago

A student is solving the system of equations below. In which line is a mistake first made?

Mathematics

1 answer:

AlexFokin [52]3 years ago

5 0

Answer:

line 1

Step-by-step explanation:

because

3x + 2y + z = 11 ➡ z = 11 - 3x - 2y

3x and 2y must change sign when transfer to other sid eof equation

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When Marcus visited the corner store the first day he bought 3 sodas and 5 bag of chips for a total of $4.05. On the second day

suter [353]

Answer:

a soda cost .65 and chips cost 1.3

Step-by-step explanation:

i hope this helps

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3 years ago

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SSSSS [86.1K]

Answer: D

Step-by-step explanation:

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3 years ago

(2.9X10^5)X(3.4X10^3 in standard form

Evgesh-ka [11]

By using exponent, it can be verified that

$(2.9 \times 10^5) \times (3.4 \times 10^3)$ in standard form is $9.86 \times 10^8$

What are exponent?

Exponent tells us how many times a number is multiplied by itself.

For example : In $2^4 = 2 \times 2 \times 2 \times 2$

Here, 2 is multiplied by itself 4 times.

If $a^m = a \times a \times a ... \times a$ (m times), a is the base and m is the index.

The laws of index are

$a^{m + n} = a^m \times a^n\\a^{m - n} = \frac{a^m}{a^n}\\(\frac{a}{b})^m = \frac{a^m}{b^m}\\(ab)^m = a^m b^m\\a^0 = 1\\a^{-n} = \frac{1}{a^n}$

The given exponent is

$(2.9 \times 10^5) \times (3.4 \times 10^3)\\9.86 \times 10^{5+ 3}\\9.86 \times 10^8$

To learn more about exponent, refer to the link:

brainly.com/question/11975096

#SPJ1

8 0

1 year ago

<img src="https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B250%7D%20-%5Csqrt%5B3%5D%7B54%7D" id="TexFormula1" title="\sqrt[3]{250} -\sqr

Nina [5.8K]

Answer:

exact form: 2 ^3√2

Step-by-step explanation:

3 0

3 years ago

Toby buys a new mp3 player for a price of $45.00. what is the total amount his credit card is charged if the sales tax is 7%

goldenfox [79]

The total amount his credit charged is $48.15. Hope it help!

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3 years ago