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2 years ago

A system of equations is shown below

Mathematics

1 answer:

KatRina [158]2 years ago

7 0

Answer:

D Multiply equation B by 5 and equation A by 4 and add the results together

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6a-1÷7=4. . . . . . . . . . .. . .

Ipatiy [6.2K]

Answer:

a=29/42

Step-by-step explanation:

6a-1÷7=4

first write the division as a fraction

6a-1/7=4

add 1/7 to each side

6a=4+1/7

which is equal to

6a=29/7

divide both sides by 6

a=29/42

8 0

3 years ago

Marshall drove to work in rush hour traffic, going just 27 miles in 1 hour and 20 minutes. Later that day, he left work early to

iragen [17]

Answer:

The average speed of Marshall is 29.7 mph

Step-by-step explanation:

Given;

distance traveled to work, d₁ = 27 miles

distance traveled back home, d₂ = 27 miles

initial time taken, t₁ = 1 hour and 20 minutes

final time taken, t₂ = 29 minutes

Total distance traveled, d = d₁ + d₂ = 27 miles + 27 miles = 54 miles

Total time taken for the journey, t = t₁ + t₂ = 1 hour + ( 20 mins + 29 mins)

t = 1 hour + 49 mins = 1 hour + 0.817 hour = 1.817 hour

The average speed is given by;

v = total distance / total time

v = 54 miles / 1.817 hour

v = 29.7 mph

Therefore, the average speed of Marshall is 29.7 mph

8 0

3 years ago

What is the average rate of change for this quadratic function for the interval from x = 0 to x = 2?

andre [41]

Answer is b hope this helps

6 0

3 years ago

HELP ME SOLVE THIS ASAP

vampirchik [111]

Answer:

∠B = 60°

a = 4.0 units

b = 6.9 units

Step-by-step explanation:

The triangle is right angled. The sum of all angles of a triangle is equal to 180 degrees.

The 3 angles are 90, 30 , ∠B .

Thus, B = 180 - 120 = 60 degrees

by trigonometry,

sin(30) = $\frac{a}{8}$ = 0.5

a = (8)(0.5) = 4 units

Also,

cos(30) = $\frac{b}{8}$ = 0.866

b = (8)(0.866)= 6.928

3 0

3 years ago

Maria had a length of fabric to make banners.

kirill115 [55]

Answer:

the fabric was 16.5 m long

Step-by-step explanation:

2.75 * 6 = 16.5

ANSWER CHECK:

16.5 / 6 = 2.75

I hope this helps :}

Brainliest is very much appreciated thank u fran

5 0

3 years ago

Read 2 more answers