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NemiM [27]
3 years ago
15

What is the solution of this linear system? A. B. C. D. E.

Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
4 0

Answer:

B

Step-by-step explanation:

Only B (14,10,8) satisfies all three equations.

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For the following equation, what would you do first? -8n+4(1-5n)=-6n-14
Mkey [24]

Answer:

1-5n

Step-by-step explanation:

you would do 1-5n because its in brackets, the order of opperation is

Brakcets

Order (Power ofs)

Division and Mulitplication

then do addition and subtraction

when doing division and multiplication and subtraction and addition go left to right to find what part goes 1st.

Hope this helped!

4 0
3 years ago
The quadratic functions f(x) and g(x) are described as follows:
mihalych1998 [28]

Given:

f(x) and g(x) are two quadratic functions.

f(x)=-8x^2-7

The table of values for the function g(x) is given.

To find:

The statement that best compares the maximum value of the two functions.

Solution:

We have,

f(x)=-8x^2-7

Here, the leading coefficient is -8 which is a negative number. So, the function f(x) represents a downward parabola.

We know that the vertex of a downward parabola is the point of maxima.

The vertex of a quadratic function f(x)=ax^2+bx+c is:

Vertex=\left(\dfrac{-b}{2a},f(-\dfrac{b}{2a})\right)

In the given function, a=-8,b=0,c=-7.

-\dfrac{b}{2a}=-\dfrac{0}{2(-8)}

-\dfrac{b}{2a}=0

Putting x=0 in the given function, we get

f(0)=-8(0)^2-7

f(0)=-7

So, the vertex of the function f(x) is at (0,-7). It means the maximum value of the function f(x) is -7.

From the table of g(x) it is clear that the maximum value of the function g(x) is 6.

Since 6>-7, therefore g(x) has a greater maximum value than f(x).

Hence, the correct option is C.

8 0
3 years ago
Read 2 more answers
A/3 -7=15 im confused for my son​
Butoxors [25]

Answer: a = 22

Step-by-step explanation: First isolate a/3 by adding 7 to both sides of the equation. That gives you a/3 = 22.

From here since <em>a</em> is being divided by 3, multiply both sides of the equation by 3 so <em>a</em> <em>= 66</em>. We can check our answer by substituting a 66 back in for <em>a</em> in the original equation and we have \frac{66}{3} - 7 =15 or 22 - 7 = 15 or 15 = 15. Since this is a true statement, our answer checks.

3 0
3 years ago
Jeremiah scored 28 points in yesterday's
skad [1K]

Answer:

There you go , happy to help

4 0
3 years ago
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devon records 4 hours of reality shows on her dvr she records comedy shows 3/8 of that amount of time. Devon watches all the rea
scZoUnD [109]
Devon records 3/8 of 4 hours for comedy shows, which is 90 mins worth (1 hour and a half).

Please vote my answer brainliest. thanks!
6 0
4 years ago
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