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2 years ago

I need help solving this

Mathematics

1 answer:

Kruka [31]2 years ago

6 0

Answer: y = -x + 5

Step-by-step explanation:

A slope-intercept equation is in the form y = mx + b where m is the slope and b is the y-intercept. Since we are given the slope, we will plug it in with the point they gave us, and solve for b.

y = mx + b

(1) = (-1)(4) + b

1 = -4 + b

5 = b

Lastly, we will write our equation by substituting m with -1 and b with 5.

y = mx + b

y = -1x + 5 or y = -x + 5

Read more about slope-intercept equations here:

brainly.com/question/27497166

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Justify why a / b x b / c x c /d x d / e is equal to a /e when B C D and E are not zero

Maru [420]

a/b * b/c * c/d * d/e is equal to a/e provided that b, c, d, and e are not zero

PROVE

a/b * b/c * c/d * d/e

= (a/b *b/c) * (c/d * d/e)

= ab/bc * (c/d * d/e)

= a/c * (c/d * d/e)

= a/c * (cd/de)

= a/c * c/e

= ac/ce

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Therefore, a/b * b/c * c/d * d/e is equal to a/e provided that b, c, d, and e are not zero

7 0

4 years ago

Mathematically verify the outlier(s) in the data set using the 1.5 rule.

statuscvo [17]

Given:

The data values are:

7, 8, 11, 13, 14, 14, 14, 15, 16, 16, 18, 19

To find:

The outliers of the given data set.

Solution:

We have,

7, 8, 11, 13, 14, 14, 14, 15, 16, 16, 18, 19

Divide the data set in two equal parts.

(7, 8, 11, 13, 14, 14), (14, 15, 16, 16, 18, 19)

Divide each parenthesis in two equal parts.

(7, 8, 11), (13, 14, 14), (14, 15, 16), (16, 18, 19)

Now,

$Q_1=\dfrac{11+13}{2}$

$Q_1=\dfrac{24}{2}$

$Q_1=12$

And

$Q_3=\dfrac{16+16}{2}$

$Q_3=\dfrac{32}{2}$

$Q_3=16$

The interquartile range is:

$IQR=Q_3-Q_1$

$IQR=16-12$

$IQR=4$

The data values lies outside the interval $[Q_1-1.5IQR,Q_3+1.5IQR]$ are known as outliers.

$[Q_1-1.5IQR,Q_3+1.5IQR]=[12-1.5(4),16+1.5(4)]$

$[Q_1-1.5IQR,Q_3+1.5IQR]=[12-6,16+6]$

$[Q_1-1.5IQR,Q_3+1.5IQR]=[6,22]$

All the data values lie in the interval [6,22]. So, there are no outliers.

Hence, the correct option is 4.

3 0

3 years ago

A box has a perimeter of 27 1/2 ft. if the lenght is 9 ft. what is the area?

gavmur [86]

Answer:

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27.5 = (9 x 2) + (Width x 2)

27.5 = 18 + (Width x 2)

9.5 = (Width x 2)

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check:

27.5 = (9 x 2) + (4.75 x 2)

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Since the width is 4.75 and the length is 9, we can multiply the two to get the area. 4.75 x 9 = 42.75 sq. ft.

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3 years ago

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Jlenok [28]

Answer:

False

Step-by-step explanation:

The left side 2 does not equal to the right side 18 , which means that the given statement is false.

4 0

3 years ago

Read 2 more answers

Can someone help me anyone please Giselle works as a carpenter and as a blacksmith.She earns \$20$20dollar sign, 20 per hour as

dalvyx [7]

Let she work for x hours as carpenter !
so earned money = 20x

and for blacksmith she must work for 30-x hours

so earned money = (30-x) ×25

so putting in eqn;

20x+25(30-x) = 690
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so she works for carpenter for 12 hrs and 30-12= 18 hrs for blacksmith !!.....answer !!

7 0

3 years ago