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Sindrei [870]
3 years ago
6

Need help with this asap!!

Mathematics
2 answers:
Mamont248 [21]3 years ago
8 0

Answer:

Hence its true.

Explanation:

a + b = c   [ equation 1 ]

b = x          [ equation 2 ]

solve:

replace b with x as they are equal.

a + x = c

Valentin [98]3 years ago
3 0
<h2>I think the answer is True </h2>

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Solve this systems of linear equations.separate the x- and y-values with a comma 2x+3y=-6 6x-4y=-44
dusya [7]

Answer:

for the first one ‘x‘: x = -3/2 y -3

for the first one ‘y’: y = -2/3x-2

for the second one ‘x’: x= 2/3 y + -22/3

for the second one ’y’: y = 3/2 x + 11

Step-by-step explanation:

6 0
3 years ago
A set of test scores are normally distributed. The mean is 100 and the standard deviation is 20. These scores are converted to s
Whitepunk [10]

Answer:

The z-scores of both the mean and the median are zero.

Step-by-step explanation:

In a normal distribution, the mean and median values will be the same, in this case, 100. Therefore, both the mean and median will have the same score.

The z-score is given by:

z=\frac{X-\mu}{\sigma}

For X = 100:

z=\frac{100-100}{20}\\ z=0

The z-scores of both the mean and the median are zero.

5 0
3 years ago
Does anyone know this. Can I please have help quick.Brainliest answer and 29 points
DiKsa [7]
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4 0
3 years ago
Read 2 more answers
How do I solve for x
skad [1K]

Answer:

<h3>x = 40/7</h3>

Step-by-step explanation:

Look at the picture.

If ABC is any triangle and AD bisects (cuts in half) the angle BAC, then

\dfrac{AB}{BD}=\dfrac{AC}{DC}

In our triangle we have the proportion:

\dfrac{x}{8}=\dfrac{10-x}{6}            <em>cross multiply</em>

6x=8(10-x)               <em>use distributive property</em>

6x=(8)(10)+(8)(-x)

6x=80-8x                   <em>add 8x to both sides</em>

14x=80            <em>divide both sides by 14</em>

x=\dfrac{80}{14}

\boxed{x=\dfrac{40}{7}}

4 0
3 years ago
Simplify<br> (4x² – 2x + 8) - (x² + 3x - 2)
allochka39001 [22]

Answer:

3x² – 5x + 10

Step-by-step explanation:

(4x² – 2x + 8) - (x² + 3x - 2) =

Drop the first set of parentheses because it is unnecessary.

= 4x² – 2x + 8 - (x² + 3x - 2)

To get rid of the second set of parentheses, change every sign inside.

= 4x² – 2x + 8 - x² - 3x + 2

Now, combine like terms.

= 3x² – 5x + 10

5 0
4 years ago
Read 2 more answers
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