3 years ago

What is the solution to the system of equations?

1 answer:

Studentka2010 [4]3 years ago

3 0

$\begin{cases}3x + y = 3 \\2x + y = 7 \end{cases} \\ \Leftrightarrow \begin{cases}x = - 4 \\2( - 4) + y = 7 \end{cases} \\ \Leftrightarrow \begin{cases}x = - 4 \\ y = 15\end{cases} \\ \Rightarrow (x,y)=(-4,15)$

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2 years ago

The diameter of the circle above is 92 cm. What is the circumference of the circle? Use = 3.14

Mice21 [21]

C=d $\pi$
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2 years ago

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butalik [34]

9514 1404 393

Answer:

2.25

Step-by-step explanation:

Add the square of half the x-coefficient to complete the square.

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2 years ago

Give an example of this when adding two rationalnumbers with different signs and provide the product.

kolezko [41]

ANSWER:

$\begin{gathered} \frac{4}{5}+-\frac{8}{3}=-\frac{28}{15} \\ \frac{4}{5}\cdot-\frac{8}{3}=-\frac{32}{15} \end{gathered}$

STEP-BY-STEP EXPLANATION:

Rational numbers are all numbers that can be expressed as a fraction, that is, as the quotient of two whole numbers.

Therefore, an example would be:

$\begin{gathered} \frac{4}{5}\text{ and - }\frac{8}{3} \\ \text{adding} \\ \frac{4}{5}+-\frac{8}{3}=\frac{4}{5}-\frac{8}{3} \\ \frac{4}{5}-\frac{8}{3}=\frac{4\cdot3-5\cdot8}{5\cdot3}=\frac{12-40}{15}=-\frac{28}{15} \\ \text{ product} \\ \frac{4}{5}\cdot-\frac{8}{3}=-\frac{4\cdot8}{5\cdot3}=-\frac{32}{15} \end{gathered}$

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6 months ago

Carrie buys 4.16 pounds of apples for $5.20 how much does one pound cost

Oksi-84 [34.3K]

4.16lbs of apple divided by $5.20 would equal $0.80 a lb.

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2 years ago