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Dmitry_Shevchenko [17]
4 years ago
14

What number should be added to 95 to get a sum of −21?

Mathematics
1 answer:
Natali [406]4 years ago
8 0

Answer: -116

Step-by-step explanation: Since negative numbers are involved, the best way to solve this is add 95 and POSITIVE 21. This gives you 116. Since you move from a positive to a negative, the 116 needs to be negative

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The half-life of cobalt-60 (used in
Likurg_2 [28]

Answer:

6.25 gm left

Step-by-step explanation:

Find the number of half lives in 26.3 years

   26.3 / 5.26 = 5 half lives

(1/2)  ^5   = 1/32 nd  of the original will be left

   1/32 * 200g = 6.25 gm left

5 0
2 years ago
How do you check is the equation is a extraneous solution pr not?
vampirchik [111]

We can check the equation is an extraneous solution or not by finding the solution and plugging it in the equation, to verify it.

<h3>What is the extraneous solution?</h3>

In mathematics, an extraneous solution is a solution that comes from the process of solving the problem but is not a genuine solution to the problem, such as the answer to an equation.

As we know from the definition the extraneous solution is a solution that comes from the process of solving the problem but is not a genuine solution to the problem.

Let's suppose the equation is:

\rm \sqrt{x+4} = x -2

Squaring both the sides:

x + 4 = (x - 2)²

x + 4 = x² - 4x + 4

x² -5x = 0

x = 0 or x = 5

Checking for the solution by plugging in the equation;

\rm \sqrt{5+4} = 5 -2

3 = 3

\rm \sqrt{0+4} = 0 -2

2 ≠ -2

The solution x = 0 shows extraneous solution.

Thus, we can check the equation is an extraneous solution or not by finding the solution and plugging it in the equation, to verify it.

Learn more about the extraneous solution here:

brainly.com/question/14054707

#SPJ1

6 0
2 years ago
Identify the y-intercept of the graph.
Contact [7]

Answer:

-5

Step-by-step explanation:

8 0
3 years ago
At the 6th grade school dance there are 132 boys, 88 girls and 14 adults. What is the ratio of boys to girls
spayn [35]
The adult's genders aren't specified so that doesn't matter.

There are 132 boys for every 88 girls

(132:88) 

To simplify the ratio, divide both numbers by the GFC (Divide both sides by 44)

3:2 

There are 3 boys for every 2 girls
5 0
4 years ago
If the triangles angles has the degrees of 100°and 43° what would be the next angle?
ohaa [14]

Answer:

Step-by-step explanation:

Since all the angles of triangle add up to 180 degrees,

Missing angle +100 +43=180.

Let the missing angle be 'x'.

Then, x + 100 +43 =180

or, x + 143 = 180

or, x = 180 - 143 = 37 degrees

So, the next angle is 37 degrees

5 0
3 years ago
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