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3 years ago

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Does anyone know how to do these? I don't understand it at all and need help! It is solving systems of equations by graphing

1 answer:

alexira [117]3 years ago

6 0

Step-by-step explanation: graph both equations where they intersect is the answer write it like this (x,y) the x and the y should be replaced with the numbers you'll get when they intersect. So if they intersected the point where they did if the y is 1 and x is 2 then the answer is (2,1). If they don't intersect at all and are parallel then it is no solution. If your only graphing one line which you aren't in this case but if you were it would be infinitely many.

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What is (w-4/9) (-2/3) =-4/9

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W=10/9 is the answer

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2 years ago

Consider the expressions 7y + 5 − 3 and 7y + 2. Which statement is true?

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The two expressions are equivalent because they have the same value regardless of the number of substituted in for y

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1 year ago

Choose the system of equations that matches the following graph:

Vilka [71]

One of the lines passes through points (0, 6) and (-4, 3). Hence the equation is given by:

(y - 6)/(x - 0) = (3 - 6)/(-4 - 0)

(y - 6)/x = -3/-4 = 3/4

4(y - 6) = 3x

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4 0

2 years ago

Candice spent 5 1/4 hours doing her homework. Her brother, Ronald, spent 1/2 that number of hours doing his homework. How many h

Elden [556K]

Let

x-----> the number of hours that Candice spent doing her homework

y-----> the number of hours that Ronald spent doing his homework

we know that

$x=5\frac{1}{4}\ hours$

convert mixed number to an improper fraction

$5\frac{1}{4}\ hours=\frac{5*4+1}{4}= \frac{21}{4}\ hours$

so

$x=\frac{21}{4}\ hours$ -------> equation A

$y=\frac{1}{2}x$ ------> equation B

Substitute equation A in equation B

$y=\frac{1}{2}*\frac{21}{4}=\frac{21}{8}\ hours$

convert an improper fraction to a mixed number

$\frac{21}{8}\ hours=2.625=2+0.625=2+\frac{5}{8}=2\frac{5}{8}\ hours$

therefore

<u>the answer is the option B</u>

$2\frac{5}{8}\ hours$

5 0

2 years ago

Read 2 more answers

The diameter of a circle is 1.4 centimeters. Find its area. Use 3.14 Round to the nearest

NeTakaya

Answer:

Area = 1.54

Step-by-step explanation:

Area = π $r^{2}$

π = 3.14

diameter = 1.4

radius (half of diameter) = 0.7

Area = 3.14 x $0.7^{2}$

Area = 3.14 x 0.49

Area = 1.5386

round to the nearest hundredth:

1.5386 = 1.54

8 0

2 years ago

Read 2 more answers