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3 years ago

What word problem could be used for the 2 step equation .5(x+40)=200

Mathematics

2 answers:

Fiesta28 [93]3 years ago

5 0

Since multiplying by 0.5 is the same as dividing by 2, the problem is described by the sentence

"Half the sum of a number and 40 equals 200"

tankabanditka [31]3 years ago

5 0

A two fundraiser group want to work together to reach $200 one fundraiser has 40 and another is x. Both of side need to be multiply by .5 so that they can reach there goal. Find x in this equation.

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Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.

diamong [38]

Answer:

A-2, B-DNE*, C-3, D-DNE, E-4, F-1

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The first attachment shows the solutions to A and C.

The second attachment shows the solutions to E and F.

There are no real number solutions to systems B and D.

_____

In general, you can solve the linear equation for y, then substitute that into the quadratic. You can subtract the x-term on the left and complete the square to find the solutions.

(3-x) +12 = x^2 +x

15 = x^2 + 2x

16 = x^2 +2x +1 = (x +1)^2 . . . . add the square of half the x-coefficient to complete the square; next take the square root

±4 -1 = x = {-5, 3) . . . . . identifies the second solution set for system A

(x -1) -15 = x^2 +4x

-16 = x^2 +3x

-13.75 = x^2 +3x +2.25 = (x +1.5)^2

roots are complex: -1.5 ±i√13.75

(1-2x) +5 = x^2 -3x

6 = x^2 -x

6.25 = x^2 -x + .25 = (x -.5)^2

±2.5 +.5 = x = {-2, 3} . . . . . identifies the third solution set for system C

remaining problems are done in a similar way.

_____

* DNE = does not exist. There is no matching solution set for the complex numbers that are the solutions to this.

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Hope this helps!

Brainliest would be great!

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With all care,

07x12!

4 0

4 years ago

How to write 53/198 as a decimal

Phantasy [73]

Answer:

0.2676 or 0.268

Step-by-step explanation:

53 ÷198

3 0

3 years ago

HLEP PMG PLSakkwkwksksk

Alex_Xolod [135]

Answer:

3 is the constant

Step-by-step explanation:

12 times 3 = 36

18 times 3 = 54

25 times 3 = 54

5 0

3 years ago

If x2 = 49 the only possible answer for x is 7

shusha [124]

Solve for x over the real numbers:
x^2 = 49

Take the square root of both sides:
Answer: x = 7 or x = -7

6 0

3 years ago

The mean is 47.1 and the standard deviation is 9.5 for a population. Using the Central Limit Theorem, what is the standard devia

MaRussiya [10]

Answer:

The standard deviation of the distribution of sample means for samples of size 60 is of 1.2264.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .