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horsena [70]
2 years ago
13

Use substitution to solve the system of equations. -1=2x-y 8x-4y=-4

Mathematics
1 answer:
sineoko [7]2 years ago
6 0

Answer:

x=-1/2+y/2

Step-by-step explanation:

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The product of two is no greater than 90. If one of the numbers is -10, what is the other number?
xeze [42]
The answer is -10 x -9, -8, -7, -6 etc
5 0
2 years ago
The cost C, in dollars, to have medical records transcribed is a function of time, t in hours. A physician's group spends C(t) =
Contact [7]

Answer:

B. $39550

Step-by-step explanation:

The expression for the function is not well-formatted, find the correct format in the solution bellow

Step one:

given data

We are told that the function of the cost is

C(t) = 0.04t^3- 0.1t^2 + 5.5t

instantaneous rate c(t) is the value obtained when we plug in 100 for t in the function above

substituting we have

C(t) = 0.04(100)^3- 0.1(100)^2 + 5.5(100)\\\\\C(t) = 0.04*1000000- 0.1*10000 + 5.5*100\\\\C(t) = 40000-1000+550\\\\C(t) = 39550

$39550

3 0
2 years ago
What is 5.092 rounded to the nearest hundredth?
goblinko [34]
5.09 because 2 is less then 5 so you round down
6 0
3 years ago
Read 2 more answers
Help! Geometry Triangle Congruence
Feliz [49]

Answer:

Step-by-step explanation:

Thank your for revising and improving the image.

Assuming DF is a straight line,

Given E is the mid-point of DF

mCE = mGF

CE || GF

Then

mDE = mEF (E midpoint of DF)

Angle DEC = Angle EFG (corresponding angle, DF transversal of parallel lines CE and GF)

mCE = mGF (given)

Then triangles DCE and EGF are congruent by reason SAS (side-angle-side)

7 0
2 years ago
Can anyone help me on this question please.​
STatiana [176]
The answer is 72.
You can figure this out using the Pythagorean theorem: C (78) squared - A (30) squared = B squared though since you already know the longest side.
78 x 78 = 6084
30 x 30 = 900
6084-900= 5184
The square root of 5184 is 72.
5 0
2 years ago
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