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3 years ago

-5х + Зу = -8 3х - 7y = -3 Ordered pair

Mathematics

1 answer:

tatiyna3 years ago

6 0

Answer:

1. y= 2x-5

2. y= x+3

3. y=2x+7

Step-by-step explanation:

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What is the answers to part a and part b

yarga [219]

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3 years ago

Question 7

luda_lava [24]

Answer:

The measures of the interior angles of polygon ABCD are equal to the measures of the corresponding angles in the reflected image. This means that angle measurements of the polygon are preserved as the image is reflected. The same is true for the side lengths. The measures of both angles and sides are preserved in a reflection. A reflection is a rigid transformation.

Step-by-step explanation:

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6 0

3 years ago

Mr Patel is planning to drive 325 miles. He will stop one hour for lunch and take a 15 min rest break.

mr_godi [17]

Option D

The trip lasts for $6\frac{1}{4}\ hours$

Solution:

Mr Patel is planning to drive 325 miles

Average speed is 65 mph

He will stop one hour for lunch and take a 15 min rest break

Let us first find the time taken

$Time = \frac{distance}{speed}$

$Time = \frac{325}{65}\\\\Time = 5$

Thus he covers 325 miles in 5 hours

Also, given that, he will stop one hour for lunch and take a 15 min rest break

Therefore, total time taken for trip is:

Total time = 5 hours + 1 hour + 15 minutes

Total time = 6 hours 15 minutes

We know that,

1 hour = 60 minutes

Therefore,

$6\ hours\ 15\ minutes\ = 6 + \frac{15}{60}\ hours = 6 + \frac{1}{4} = 6\frac{1}{4}\ hours$

Thus the trip lasts for $6\frac{1}{4}\ hours$

8 0

4 years ago

Use elimination to solve the system for 4x + 7 y equals -14 + 8 x + 5 y equals 8 for x

olga2289 [7]

9514 1404 393

Answer:

(x, y) = (3.5, -4)

Step-by-step explanation:

Elimination is easiest if one of the coefficients of a variable is a multiple of the other coefficient of the variable. Here, we have x-coefficients of 4 and 8, so it will be easiest to eliminate x.

Subtract the second equation from 2 times the first.

2(4x +7y) -(8x +5y) = 2(-14) -(8)

9y = -36 . . . . . simplify

y = -4 . . . . . . . divide by 9

4x +7(-4) = -14 . . . . substitute for y in the first equation

4x = 14 . . . . . . . add 28

x = 3.5 . . . . divide by 4

The solution is (x, y) = (3.5, -4).

4 0

3 years ago

A railroad crew can lay 7 miles of track each day. They need to lay 203 miles of track. The length, L (in miles), that is left t

swat32

Answer:

It will take 29 days to lay the track

After 18 days the crew still has 77 miles of track left to lay

Step-by-step explanation:

203÷7

=29 days

L= 203 - 7(18)

L= 203 - 126

L= 77

7 0

3 years ago