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3 years ago

HELP PLZ ILL MAKE BRAINLIEST AND GIVE ALOT OF POINTS-

Mathematics

2 answers:

timurjin [86]3 years ago

8 0

Answer:

Step-by-step explanation:

Given ,

13d + 8 = -1

=> 13d = -1 - 8

=> 13d = -9

$= > d = \frac{ - 9}{13}$

Hence, 

The value of d = -9/13 (Ans)

ki77a [65]3 years ago

4 0

Answer:

d = - $\frac{9}{13}$

Step-by-step explanation:

Given

13d + 8 = - 1 ( subtract 8 from both sides )

13d = - 9 ( divide both sides by 13 )

d = - $\frac{9}{13}$

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Find the equation of the line perpendicular to y=−2 that passes through the point (4, −2).

vfiekz [6]

Answer:

x = 4

Step-by-step explanation:

y = - 2 is the equation of a horizontal line parallel to the x- axis.

A perpendicular line is therefore a vertical line parallel to the y- axis with equation

x = c

where c is the value of the x- coordinates the line passes through.

The line passes through (4, - 2 ) with x- coordinate 4 , thus

x = 4 ← equation of perpendicular line

5 0

3 years ago

Find the value of 4 + (27 - 12·2) ÷ 2. Answer's are 3.5,5.5 and 19 Which one is it

fredd [130]

You follow the rule PEMDAS parenthesis, exponent, multipy, divide, add, substart. So you would start off by doing 27-12x2, you would do 12x2=24 first then 27-24=3. So then it would be 4+3/2, do 3/2=1.5, then add it 4+1.5=5.5. So the correct answer is 5.5

8 0

3 years ago

Read 2 more answers

To encourage public transportation, Ronny wants to give some friends envelopes with bus tickets and subway tickets in them. If h

Blizzard [7]

Answer:

6 enevlopes

Step-by-step explanation:

18 divided by 6 equals 3

12 divided by 6 equals 3

hope this helps you :)

6 0

3 years ago

A circle has a circumference of 28 centimeters. If an arc subtends a central angle of 55 degrees, what is the arc length?

Harlamova29_29 [7]

Answer:

s = 4.28 cm (Answer A)

Step-by-step explanation:

1) The formula for the circumference of a circle of radius r is C = 2(pi)r, and this corresponds to a full circle, with central angle 360 degrees.

2) Here the circumference is 28 cm. Therefore, solving for the radius involves the following calculation: 28 cm = 2(pi)r, or

r = (28 cm) / (2 pi), or (28 cm) / 6.28 = 4.46 cm.

3) The arc length s = r(theta), when the central angle (theta) is 55 degrees, is (55/360) times the circumference of the circle: (55/360)(28 cm), or

s = 4.28 cm (Answer A)

3 0

3 years ago

For a track meet, Tara ran the 1,600 m event at constant speed in 5 minutes and 20 seconds. What was her speed?

9966 [12]

Answer:

300 m/min

Step-by-step explanation:

Using the general formula of d = rt, where d = distance, r = rate and t = time, we can solve for the missing variable (r, or speed). Given Tara's distance of 1600 m and her total time of 5 minutes and 20 seconds, first convert her time into just minutes:

5 $\frac{20}{60}=\frac{1}{3}$

5 $\frac{1}{3}=\frac{16}{3}$

1600 = r(16/3)

Multiply both sides by reciprocal of 16/3: 3/16(1600) = r(16/3)(3/16)

Solve for 'r': 300 meters per minute

4 0

3 years ago