3 years ago

Use substitution to solve the systems of equations. y=x+1.75 4x-2y=4

2 answers:

6 0

Since y already equals something, x + 1.75, we can put its equivalent x + 1.75 in its place in the other equation.
See the image for the rest of the solution steps.

Evgesh-ka [11]3 years ago

4 0

Answer:

(3.75,5.5)

Step-by-step explanation:

I know because i got a 100% on the i-ready quiz

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Use a protractor to draw a parallelogram that has side lengths of 8 centimeters and 6 centimeters and two adjacent angles that m

photoshop1234 [79]

Answer:

B. 40 degrees and 140 degrees.

Step-by-step explanation:

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2 years ago

Julie and her friend went to the movies and bought one jumbo popcorn and two chocholate chip cookies for 5$. Marvin and his frie

makvit [3.9K]

Let j = cost of one jumbo popcorn, and c = cost of one chocolate chip cookie.

Then, based upon the given info, 1j + 2c = $5.

Also, 3j + 5c = $14.50

Let's solve this system of equations using addition/subtraction:

Mult. the first equation by -3, to obtain -3j - 6c = -$15

Now add this result to the 2nd equation:

-3j - 6c = -$15
3j + 5c = $14.50
----------------------
-c = -$0.50, or c = $0.50. Since 3j + 5c = $14.50, subst. $0.50 for c
lets us find j:

3j + 5($0.50) = $14.50, so 3j = $12.00. Thus, j = $4.00.

Jumbo popcorn is $4/bag, and choc. chip cookies $0.50 each.

4 0

3 years ago

<img src="https://tex.z-dn.net/?f=%20%5C%5C%20" id="TexFormula1" title=" \\ " alt=" \\ " align="absmiddle" class="latex-formula"

Gwar [14]

Answer:

$\frac{3}{2a} + \frac{1}{6a} \\ \\ \frac{9}{6a} + \frac{1}{6a} = \frac{9 + 1}{6a} \\ \\ = \frac{10}{6a} = \frac{5}{3a}$