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Westkost [7]
3 years ago
6

-4x - y= -16 Complete the missing value in the solution to the equation.

Mathematics
1 answer:
kogti [31]3 years ago
3 0

Answer:

There can be many answers

Step-by-step explanation:

it can be....

20-4=16

24-8=16

28-12=16

32-16=16

36-20=16

40-24=16

You might be interested in
State the value of the discriminant. Then determine the number of real roots of the equation. n(7n + 8) = –10
Viktor [21]

Answer:

  a.  -216, 0 real roots

Step-by-step explanation:

The discriminant of ...

  ax² + bx + c = 0

is ...

  d = b² -4ac

When we put your equation into the standard form shown above, we get ...

  7n² +8n +10 = 0

Then we can identify a=7, b=8, c=10. The discriminant is then ...

  d = 8² - 4·7·10 = 64 -280 = -216

___

The interpretation of the discriminant is ...

  • < 0; no real roots (2 complex roots)
  • = 0; one real root (multiplicity 2)
  • > 0; 2 real roots

Your discriminant is -216, so there are 0 real roots.

7 0
3 years ago
An angle measures 16° more than the measure of its supplementary angle. What is the measure of each angle?
Olenka [21]
82 degrees and 98 degrees


First, find the original equation

180 = (x) + (x + 16)


Simplify: 180 = 2x + 16


Next, use the subtraction property of equality to subtract 16 from both sides


180 - 16 = 2x + 16 - 16


Simplify: 164 = 2x


Then, you can use the division property of equality to find the value of x

164/2 = 2x/2


Simplify: 82 = x



Now, we know that the first angle equals 82 degrees and that the second angle equals 98 degrees
3 0
2 years ago
Julie and Eric row their boat (at a constant speed) 18 miles downstream for 3 hours helped by the current. Rowing at the same ra
Nastasia [14]

Answer

Find out the the rate of the boat in still water.

To proof

let us assume that the speed of the boat in the still water = u

let us assume that the speed of the current = v

Formula

speed = \frac{Distance}{time}

As given

18 miles downstream for 3 hours

Now for the downstream

u + v = \frac{18}{3}

u + v = 6

now for the upstream

As given

the trip back against the current takes 6 hours

u - v = \frac{18}{6}

u-v = 3

Than the two equation becomes

u + v = 6 and u - v = 3

add both the above equation

we get

2u = 9

u = 4.5miles per hour

put this in the  u - v = 3

4.5 -v = 3

v =1.5 miles per hour

The rate of  the boat in the still water is  4.5miles per hour .

Hence proved



3 0
3 years ago
Use the law of cosines to find the value of 2*4*5 cos theta
sweet-ann [11.9K]
We can proceed in solving the problem since all information are given such as 2*4*5costheta.
we have a=4, b=5, and C=theta
let us solve for "c" using Pythagorean
c²=a²+b²
c²=4²+5²
c=6.4
Solving for theta or C
c²=a²+b²-2abcosC
6.4²=4²+5²-2*4*5*cosC
C=90

3 0
4 years ago
Read 2 more answers
Can someone please answer this equation?
Airida [17]

Answer:

4

Step-by-step explanation:

4

7 0
4 years ago
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