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2 years ago

I WILL GIVE SO MANY POINTS PLS HELP

Mathematics

2 answers:

SIZIF [17.4K]2 years ago

8 0

i might be wrong but you have to do proportions, i got 45 minute

Step-by-step explanation:

set it,it up by 30 minutes over 4 miles and x over 6 miles then you multiply by 6 and 30 which is 180 then divide by 4 and i got 45

Sphinxa [80]2 years ago

4 0

Answer:

10 fewer minutes

Step-by-step explanation:

Use formula

distance = time* speed

The distance between home and school:

4* 30 min = 4 * 0.5 hr = 2 miles

Noah's time to reach home:

2 / 6 = 1/3 hr = 1/3*60 min = 20 min

Difference in time:

30 min - 20 min = 10 min

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What is the value of 2/7+-3/4+-2/7+4/3

vodka [1.7K]

Answer:

7/12

Step-by-step explanation:

5 0

2 years ago

1. -x=10y 2. y+8=-x 3. -4+7x+4=3y

fiasKO [112]

Answer:

1 y=-1/10x

2 y=-x-8

3 y= 7/3x or 2 1/3x

Step-by-step explanation:

1 -x=10y

divide -x and 10 by 10

2 y+8=-x

subtract 8

3 -4+7x+4=3y

divide everything by 3

6 0

2 years ago

The pendulum swings at an arc of 30 cm and its successive swings reduced to 10% of the previous swings. What is the total distan

OleMash [197]

Answer:

$S_g= 33.333cm$

Step-by-step explanation:

From the question we are told that

Arc of 30 cm

10% reduction after each swing

Generally sum of geometric sequence is given by the equation

$S_g=\frac{a(1-r^n)}{1-r}$

Mathematically solving for total distance traveled we have

$S_g=\frac{30(1-(0.10^5)}{1-(0.10)}$

$S_g=\frac{30}{0.9}$

Therefore the total distance traveled by the pendulum after 5 swings

$S_g= 33.333cm$

3 0

2 years ago

Dannielle's test grades are 83, 92, 99, 86 and 90. What is the median of her grades?

Butoxors [25]

Answer: 90

Step-by-step explanation:

83, 86, 90, 92, 99

90 is in the middle <3

5 0

2 years ago

What is an equation of the line that passes through the point (-6, -1) and is perpendicular to the line 6x-y= 7?

yuradex [85]

Answer: y=- 1/6x-2

Step-by-step explanation:

7 0

2 years ago