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2 years ago

X+2y=3 3y+5y=7 I dont know

Mathematics

1 answer:

Lena [83]2 years ago

8 0

Answer:

Step-by-step explanation:

3y+5y=8y

8y=7(divide 8 in both sides to get y)

y=7/8

x+2y=3...but we already know the value of y, so substitute 7/8 to y

x+2(7/8)=3

x+14/8=3

x=3-14/8

=1.25

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Solve the exponential equation for x 64^7x-8 = 1

SOVA2 [1]

X=9/64^7

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3 years ago

Read 2 more answers

A jar of peanut butter and a jar of jam cost $10.20 in total. the jar of peanut butter costs $10.00 more than the jar of jam. ho

Olegator [25]

Well this is pretty simple. So the first thought is that the peanut butter would be 10$ and the jam would be 0.20$, however, the peanut butter would not be 10$ more. Instead, subtract the 10$ from the total, which gives you 0.20$, and then divide that by two. Now you have 0.10$ for each, along with another 10$ for the peanut butter. The peanut butter would be $10.10, and the jam would be 0.10$ (that's pretty cheap!).

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3 years ago

When x=2 and y=4, by how much does the value of 4x^2 - y exceed the value of 3x^2 - 3y

kakasveta [241]

Step-by-step explanation:

4(2)² - 4 =

4(4) - 4 = 12

3(2)² - 3(4)

3(4) - 12

12 - 12 = 0.

It exceeds the value by 12 :)

6 0

2 years ago

Complete the equation of the graphed linear function in point-slope form.

BlackZzzverrR [31]

They are using the point (2, 8) to write this equation. You know that because of the "y-8" in the equation, and also because it's bolded! lol. Anyways, what's missing is the slope and the x value from our point. The slope is -2. Find this by picking 2 points on the line and putting those into the slope equation. Use the bolded point and the x-intercept: (2,8) and (6,0): $m= \frac{0-8}{6-2}= \frac{-8}{4}=-2$ . As stated earlier the x coordinate in the bolded point is 2. So our equation is y-8=-2(x-2). And there you Go!

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3 years ago

PLEASE HELP I AM SO CONFUSED

Natasha2012 [34]

Answer:

a) h(3) = 9

b) h(0) = 6

c) h(6) = 4

Step-by-step explanation:

Piecewise functions have multiple pieces of curves/lines where each piece corresponds to its definition over an interval.

Given piecewise function:

$\sf h(x)=\begin{cases}\sf \dfrac{x^2-36}{x-6} &\textsf{if }x\neq 6\\\\\sf 4 & \textsf{if }x=6\end{cases}$