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2 years ago

I need some help with this one. Please give it a go! Thank you for your time!

Mathematics

1 answer:

Zigmanuir [339]2 years ago

8 0

Answer:

y = 4x - 3

Step-by-step explanation:

When we re-write the given equation into its slope-intercept form, it will like this:

y = (-1/4)x - 6

This line has a slope equal to -1/4 so the slope of the required line has a slope of +4 (perpendicular to the given line). Use this new slope and the given point P0(-1, -7) into this equation:

y - y0 = m(x - x0) ---> y + 7 = 4(x + 1)

Rearranging the terms into its slope-intercept form, we get

y = 4x - 3

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Please help on this math question!!

katrin2010 [14]

Answer:

x = 49

Step-by-step explanation:

The third side of the largest of the inner triangles:

= $\sqrt{(7\sqrt{(33)^{2} }- (33)^{2}$

= $\sqrt{528} =\sqrt{(16)(33)} =4\sqrt{33}$

The side that continues next to 33: x -33

Applying similarity property on right triangles:

$\frac{33}{4\sqrt{33} } =\frac{4\sqrt{33} }{x-33}$

$(33)(x-33)=(4\sqrt{33} )^{2}$

$33x-1089=528$

$33x=528+1089$

$x=\frac{528+1089}{33} =49$

Hope this helps

6 0

2 years ago

Please help! ill mark you as brainleist if you get it correct!

sveta [45]

Answer:

7.96

Step-by-step explanation:

50/3.14

15.92

15.92/2

7.96

4 0

2 years ago

Read 2 more answers

Sandra normally takes 2 hours to drive from her house to her grandparents' house driving her usual speed. However, on one partic

Rudiy27

Answer:

Her usual driving speed is 38 miles per hour.

Step-by-step explanation:

We know that:

$s = \frac{d}{t}$

In which s is the speed, in miles per hour, d is the distance, in miles, and t is the time, in hours.

We have that:

At speed s, she takes two hours to drive. So

$s = \frac{d}{2}$

$d = 2s$

However, on one particular trip, after 40% of the drive, she had to reduce her speed by 30 miles per hour, driving at this slower speed for the rest of the trip. This particular trip took her 228 minutes.

228 minutes is 3.8 hours. So

$0.4s + 0.6(s - 30) = \frac{d}{3.8}$

$3.8(0.4s + 0.6s - 18) = d$

$3.8s - 68.4 = 2s$

$1.8s = 68.4$

$s = 38$

Her usual driving speed is 38 miles per hour.

3 0

2 years ago

Two trains leave stations 360 miles apart at the same time and travel toward each other. One train travels at 70 miles per hour

cricket20 [7]

S=d/t   ⇒d=s*t
s=speed
d=distance
t=time

The first train :
d=x

x=70 miles/h*t   ⇒ x=70t (1)

The second train
d=360 miles - x

360 miles - x=80 miles/h*t ⇒360-x=80t   ⇒ x=360-80t (2)

therefore, with the equations (1) and (2) we have a systeme of equations:

x=70t
x=360-80t

we can solve this system of equations by equalization method.

70t=360-80t
70t+80t=360
150t=360
t=360/150=2.4 (≈2 hour 24 minutes)

Answer: the first train meet with the second train in 2 hour 24 minutes.

3 0

2 years ago

Read 2 more answers

If x=w find the perimeter of vwx A. 16 B. 19 C. 20 D. 22

Mandarinka [93]

Answer:

Step-by-step explanation:

Its the only odd number

3 0

3 years ago