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4 years ago

I need to know how to solve this and what is the question asking

Mathematics

1 answer:

expeople1 [14]4 years ago

8 0

You can reword the equation 6x+y=9 to
Y=6x+9

Then plug-in y=6x+9 into the equation 2x+3y=-5

Plug this 2x+3(6x+9)=-5
2x+18x+27=-5
Then solve it from there

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David has 3 1/2 cups of blueberries. He uses 1/4 of a cup of blueberries to make a breakfast smoothie. He uses 1/2 of the remain

dusya [7]

Answer:

$1\frac{5}{8}$ cup of blueberries

Step-by-step explanation:

Since David starts out with 3 1/2 cups of blueberries and uses 1/4 cup to make a smoothie, we will need to subtract 1/4 from his starting amount of 3 1/2

$3\frac{1}{2}-\frac{1}{4} =3\frac{1}{4}$ David now has 3 1/4 cup of blueberries

David then uses half of this new amount of blueberries to make his pancakes. We will need to divide by 2 in order to figure out how much half is

First we can turn 3 1/4 into an improper fraction to make it easier to work with → 3 1/4 = 13/4
Now dividing 13/4 by 2 gives us $\frac{\frac{13}{4} }{2} =(\frac{13}{4})(\frac{1}{2}) = \frac{13}{8}$
David used 13/8 cups of blueberries to make his pancakes
Turning this back into a mixed number leaves him with 1 5/8 cup of blueberries

3 0

3 years ago

8, 16,24, 64 what is the sequence

astra-53 [7]

+8+8+8 (something to fill 20 characters)

6 0

3 years ago

Eduardo’s average speed on his commute to work was 55 miles per hour. On the way home, he hit traffic and only averaged 40 miles

Angelina_Jolie [31]

40(1.25-t) is missing from the table

Time, speed, and distance are the three factors must be taken into account.

How to solve such time related questions?

The key concept for solving such questions is the relationship between speed, distance and time.

The relationship between them is Distance = Speed X Time

We provide both time and speed.

It is necessary to compute the distance.

55 miles per hour is the commuter speed

Worktime equals 1.25-T

Home-bound speed is 40 miles per hour.

1.25 seconds to get home

Time in Total = T + t = 1.25

Travel distance to home

Distance/Time x Speed

40 = Total Distance/t

Distance overall = 40 (1.25-t)

As a result, 40(1.25-t) is the right response.

Learn more about time related questions :

brainly.com/question/12876231

#SPJ4

6 0

2 years ago

Fine the midpoint of the line segment joining points A and B. A(4,-7); B(4,1)

Jet001 [13]

Answer:

Midpoint: (4,-3)

Step-by-step explanation:

(4 +4)/2 = 4

(-7+1)/2 = - 3

8 0

3 years ago

Read 2 more answers

Brian decided to start a dog-walking service. He's going to charge each dog owner $4.50 to walk one dog and $6.75 to walk two do

puteri [66]

Answer:

119.25

Step-by-step explanation:

13 x 4.50 = 58.5

9 x 6.75 = 60.75

58.5 + 60.75 = 119.25

8 0

3 years ago