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Alinara [238K]
3 years ago
9

Determine whether the graphs of y=-2x-7 and -y=2x+13 are parallel, perpendicular, coincident, or none of these.

Mathematics
2 answers:
babymother [125]3 years ago
4 0

Answer:

Parallel

Step-by-step explanation:

• Parallel lines have equal slopes

• The product of the slopes of perpendicular lines is - 1

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - 2x - 7 is in this form with slope m = - 2

- y = 2x + 13 ← multiply through by - 1

y = - 2x - 13 ← in slope intercept- form with slope m = - 2

Both lines have the same slope, that is m = - 2, hence

The graphs of the lines are parallel

Elden [556K]3 years ago
3 0
It's parallel. Definitely true

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JulsSmile [24]

Answer:

22, 25, 28, 31

Step-by-step explanation:

The question is mixed up. The only clear question is:

Given:

4, 7, 10, 13, 16, 19

Required

Write the next 4

Notice that the rule of the above sequence is to "add 3". So, the next 4 numbers is gotten by adding 3 to the previous number on the sequence.

The next 4 are:

19 + 3 = 22

22 + 3 = 25

25 +3 = 28

28 + 3= 31

4 0
3 years ago
An auto maker estimates that the mean gas mileage of its sports utility vehicle is at least 20 miles per gallon. A random sample
Nady [450]

Answer:

Yes, we reject the auto maker's claim.

Step-by-step explanation:

H0 : μ ≥ 20

H1 : μ < 20

Sample mean, xbar = 18 ;

Sample size, n = 36

Standard deviation, s = 5

At α = 0.01

The test statistic :

(xbar - μ) ÷ s /sqrt(n)

(18 - 20) ÷ 5/sqrt(36)

-2 /0.8333333

= - 2.4

Pvalue from test statistic : Pvalue = 0.00819

Pvalue < α

0.00819 < 0.01

Hence, we reject the Null

7 0
3 years ago
Camila and Evelyn work at a dry cleaners ironing shirts.Camila can iron 40 shirts per hour, and Evelyn can iron 20 shirts per ho
GalinKa [24]
60 shirts can be ironed per hour with two workers
8 0
3 years ago
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Use the table to write a quadratic function in vertex form. Then rewrite the function in standard form.
Kisachek [45]

Answer:

Step-by-step explanation:

The graph decreases at first, then changes direction at (2, 5).

y = a(x-2)^2 + 5

Plug in (1,11) and solve for a:

11 = a(1-2)^2 + 5

a = 6

Equation in vertex form:

y = 6(x-2)^2 + 5

8 0
3 years ago
PLZ HELP IM TIMED!!!
SVEN [57.7K]

Answer:

It should be A

Step-by-step explanation:

multiply the - by 7/8 to get -7/8

6 0
4 years ago
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