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5 months ago

3х – 8y = -56 -3х – 56 = -8ysolve using system of equations

1 answer:

7 0

$\begin{gathered} 3x-8y=-56 \\ -3x+8y=56 \\ \text{those equations are equivalent, so we only need to solve one},\text{ } \\ 3x-8y=-56\rightarrow3x=-56+8y\rightarrow x=\frac{-56+8y}{3} \\ \text{let y=t} \\ S=\lbrace(\frac{-56+8t}{3},t)^{}\colon t\in R\}^{} \end{gathered}$

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Judy bought 20 apples at the store, and the total weight was 2 kilograms. If the apples all had about the same weight, how much

chubhunter [2.5K]

Answer:

200 grams

Step-by-step explanation:

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2 years ago

Divide:5.52 x 1031.2 x 105Write your answer in scientific notation. For example, you'd enter 2.3*10^4 for 2.3 x 104

IrinaK [193]

The question can be solved as follows:

$\frac{5.52\times10^3}{1.2\times10^5}=\frac{5.52}{1.2}\times10^{-2}=4.6\times10^{-2}$

Hence the value of the given expression in scientific notation is expressed as:

$\frac{5.52\times10^3}{1.2\times10^5}=4.6\times10^{-2}$

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1 year ago

WORTH 100 POINTS WHOEVER ANWSERS FIRST I WILL REWARD BRAINLIEST HELP PLEASE What are five one step equations with the answer of

Harlamova29_29 [7]

Answer and Explanation:

Five one-step equations with the answer of 0:

1. x - 8 = -8

2. x - 4 = -4

3. x / 2 = 0

4. x - 3 = -3

5. 5 * x = 0

Five one-step equations with the answer of -5:

1. y + 2 = -3

2. y - 3 = -8

3. y + 10 = 5

4. y * (-2) = 10

5. y / 1 = -5

Five one-step equations with the answer of 4:

1. 4 * z = 16

2. 8 - z = 4

3. 7 + z = 11

4. z / 2 = 2

5. z + 11 = 7

Hope these help!

5 0

2 years ago

Read 2 more answers

P³ = 1/8 please help me if anybody can .

ivanzaharov [21]

Answer:

$p= \dfrac{1}{2}$

Step-by-step explanation:

Given equation:

$p^3=\dfrac{1}{8}$

Cube root both sides:

$\implies \sqrt[3]{p^3}= \sqrt[3]{\dfrac{1}{8}}$

$\implies p= \sqrt[3]{\dfrac{1}{8}}$

$\textsf{Apply exponent rule} \quad \sqrt[n]{a}=a^{\frac{1}{n}}:$

$\implies p= \left(\dfrac{1}{8}\right)^{\frac{1}{3}}$

$\textsf{Apply exponent rule} \quad \left(\dfrac{a}{b}\right)^c=\dfrac{a^c}{b^c}:$

$\implies p= \dfrac{1^{\frac{1}{3}}}{8^{\frac{1}{3}}}$

$\textsf{Apply exponent rule} \quad 1^a=1:$

$\implies p= \dfrac{1}{8^{\frac{1}{3}}}$

Rewrite 8 as 2³:

$\implies p= \dfrac{1}{(2^3)^{\frac{1}{3}}}$

$\textsf{Apply exponent rule} \quad (a^b)^c=a^{bc}:$

$\implies p= \dfrac{1}{2^{(3 \cdot \frac{1}{3})}}$

Simplify:

$\implies p= \dfrac{1}{2^{\frac{3}{3}}}$

$\implies p= \dfrac{1}{2^{1}}$

$\implies p= \dfrac{1}{2}$

3 0

10 months ago

Read 2 more answers

Six chicken nuggets have 204 calories. How many calories are in 9 chicken nuggets

professor190 [17]

Answer:

306 calories

Step-by-step explanation:

By looking at the problem, we can conclude the number of chicken nuggets and the calories are directly related, when the amount of chicken nuggets go up, the calories also go up, proportionally. Because of this, we can set up an equation:

6 / 204 = 9 / x

Where x is the amount of calories in 9 chicken nuggets.

Now, we can simplify by cross multiplying:

6x = 1836

x = 306 calories

7 0

2 years ago

Read 2 more answers