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4 years ago

Answer QUICK; Will mark BRAINILIEST IF CORRECT

Mathematics

2 answers:

UNO [17]4 years ago

8 0

Answer:this is the correct answer just took test

Step-by-step explanation:

Rama09 [41]4 years ago

6 0

Answer:

2.5; 2.5

Step-by-step explanation:

slope m = (y2-y1)/(x2-x1) (or use the graph and count rise over run)

m = (10-5)/(4-2) = 5/2 or 2.5

The slope of the line is 2.5. This means that 2.5 mm of rain falls every hour

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How can I factor 2m^2 n^2 + 6mn^2 + 16n^2=

cestrela7 [59]

2m²n² + 6mn² + 16n²
2n²(m²) + 2n²(m) + 2n²(8)
2n²(m² + m + 8)

3 0

4 years ago

the foundation of a building is in the shape of a rectangle WITH THE LENGTH OF 20 METERS AND A WIDTH OF 18 METERS. TO THE NEARES

DerKrebs [107]

Answer:

Pythagoras theorem. 20^2 times 18^2 = distance^2

3 0

3 years ago

Let $A$ and $B$ be constants such that the graphs of the lines $x + 5y = 7$ and $15x + Ay = B$ are perpendicular and intersect a

Elan Coil [88]

Answer:

(A, B) = (-3, -129).

Step-by-step explanation:

First convert the first equation to slop-intercept form:

x + 5y = 7

5y = -x + 7

y = -0.2x + 1.4

The slope is -0.2 so the slope of the line perpendicular to this line has slope

-1/ -0.2 = 5.

Now, converting the second equation to slope-intercept form:

15x + Ay = B

Ay = -15x + B

y = (-15/A)x + B/A

So the slope -15/A = 5 so A = -3.

So y = 5x + B/-3

Substituting the point (-8, 3)

3 = 5(-8) + B/-3

B/-3 = 43

B = - 129.

3 0

4 years ago

How to slice for x in the equation or inequality below

stepladder [879]

Answer:

x = d/c

Step-by-step explanation:

If cx=d and you want to solve for x, divide both sides of this equation by c. You'll get x = d/c.

8 0

3 years ago

The average outstanding bill for delinquent customer accounts for a national department store chain is $187.50 with standard dev

SpyIntel [72]

Answer:

Probability that the mean outstanding bill is over $200 is 0.0526.

Step-by-step explanation:

We are given that the average outstanding bill for delinquent customer accounts for a national department store chain is $187.50 with standard deviation $54.50.

Also, a random sample of 50 delinquent accounts is selected.

<em>Firstly, Let </em> $\bar X$ <em> = mean outstanding bill</em>

The z score probability distribution for is given by;

Z = $\frac{ \bar X - \mu}{\frac{\sigma}{\sqrt{n} } }$ ~ N(0,1)

where, $\mu$ = average outstanding bill = $187.50

$\sigma$ = standard deviation = $54.50

n = sample of delinquent accounts = 50

Probability that the mean outstanding bill is over $200 is given by = P( $\bar X$ > $200)

P( $\bar X$ > 200) = P( $\frac{ \bar X - \mu}{\frac{\sigma}{\sqrt{n} } }$ > $\frac{ 200-187.50}{\frac{54.50}{\sqrt{50} } }$ ) = P(Z > 1.62) = 1 - P(Z $\leq$ 1.62)

= 1 - 0.94738 = 0.0526

Therefore, probability that the mean outstanding bill is over $200 is 0.0526.

5 0

4 years ago

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