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3 years ago

PLEASE HELP ME WITH THIS I WILL GIVE BRAINLIEST

Mathematics

1 answer:

goldenfox [79]3 years ago

7 0

A because a colored circle means it’s greater than

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2/5(25y - 50) + 25y simplified

Vitek1552 [10]

Answer:

$35y - 20$

Step-by-step explanation:

here's the solution :-

=》

$\frac{2}{5} (25y - 50) + 25y$

=》

$10y - 20 + 25y$

=》

$35y - 20$

3 0

3 years ago

Read 2 more answers

The table below gives the dimensions of a bridge and a scale model of the bridgeFind the scale factor of the model to the real b

Oksana_A [137]

The corresponding sides of the model and the actual bridge are in proportion because the two solids are similar.

The scale factor from the model to the actual bridge is 5/25 = 6/30 = 8/40 = 1/5.

Answer: 1/5

3 0

3 years ago

The points (2, 3) and (6, 11) lie on a line. What is the slope of this line?

AveGali [126]

Answer:

8/4

Step-by-step explanation:

to do slope is y2 - y1 over x2 - x1, so it would be 11 - 3 for 8, then 6 - 2, leaving 8/4.

3 0

3 years ago

Type in the value of y.<br><br><br><br> If x = 7, then y =

Mila [183]

<h3>Answer: 8</h3>

Explanation:

The rule says "whatever x is, add 1 to it to get y"

So for instance, if x = 3, then y = x+1 = 3+1 = 4

Now if x = 7, then y = x+1 = 7+1 = 8

3 0

3 years ago

Read 2 more answers

Scores on a college entrance examination are normally distributed with a mean of 500 and a standard deviation of 100. What perce

Alla [95]

Answer:

The percentage is $P(350 < X 650 ) = 86.6\%$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 500$

The standard deviation is $\sigma = 100$

The percent of people who write this exam obtain scores between 350 and 650

$P(350 < X 650 ) = P(\frac{ 350 - 500}{ 100}$

Generally

$\frac{X - \mu }{\sigma } = Z (The \ standardized \ value \ of \ X )$

$P(350 < X 650 ) = P(\frac{ 350 - 500}{ 100}$

$P(350 < X 650 ) = P(-1.5$

$P(350 < X 650 ) = P(Z < 1.5) - P(Z < -1.5)$

From the z-table $P(Z < -1.5 ) = 0.066807$

and $P(Z < 1.5 ) = 0.93319$

=> $P(350 < X 650 ) = 0.93319 - 0.066807$

=> $P(350 < X 650 ) = 0.866$

Therefore the percentage is $P(350 < X 650 ) = 86.6\%$

3 0

3 years ago