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Blababa [14]
3 years ago
9

Emily's family loves to work together in the garden. They have a slight preference for flowers, as 60% percent of their plants a

re flowers and 40%, percent are vegetables. They have 50 plants growing in the garden. How many vegetable plants do they have?
Mathematics
2 answers:
Phantasy [73]3 years ago
4 0
20 because 100 plants would have 60 flowers and 40 vegetables so 50% which is half would be 30 flowers and 20 vegetables
LUCKY_DIMON [66]3 years ago
3 0
Your answer is 20 because 30 flowers are growing in the garden, and 20 vegetables are growing in the garden. You get your answers by knowing that 60% of 50 is 30, and 40% of 50 is 20.
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Two cars left the city for a suburb, 120 km away, at the same time. The speed of one of the cars was 20 km/hour greater than the
Virty [35]

Answer:

V1 = 60 km/h

V2 = 40 Km/h

Step-by-step explanation:

The speed of an object is defined as

Speed =  distance / time

Let

V1 be the speed of the faster car

V2 be the speed of the other car

t1 the time it took for the first car to arrive

t2 the time it took for the second car to arrive

d1 the distance traveled by first car

d2 the distance traveled by second car

We know thanks to the problem that

V1 = V2 + 20 Km/h

t1 = t2 - 1 hour

d1 = d2 = 120 Km

d1 = V1 * t1

d2 = V2* t2

V1 * t1 = V2* t2

V1* t1 = (V1 -20)*(t1 +1)

The system of equations

(V1 -20)*(t1 +1) = 120

V1 * t1 = 120

120 + (120/t1) -20*t1 = 140

(120/t1) -20*t1  = 20

Which gives,

t1 = 2

This means

V1 = 60 km/h

V2 = V1 - 20 Km/h =  40 Km/h

6 0
3 years ago
Solve the system of equations. Write you answer as an ordered pair.
lawyer [7]

Answer:

x = -4    y = -5

Step-by-step explanation:

2x + 3 = -x - 9

3x + 3 = -9

3x = -12

x = -4

y = - (-4) - 9

y = 4 - 9

y = -5

6 0
2 years ago
Find the length of side BC.<br> Give your answer to 1 decimal place.
Alenkasestr [34]

Use

Angle sin A = AB/BC

AND FIND IT OUT

PLEASE FOLLOW ME

5 0
3 years ago
Read 2 more answers
Three-sevenths of a number is 21. Find the number.
miskamm [114]

Answer:

Step-by-step explanation:

The number is 49, First do 21 / 3 to find what 1/7 of the number is. We get 7, so we know 1/7 is 7 so if we do 7 x 7 we will have 7/7 or one whole and 7x7 is 49. Hope this helps

6 0
3 years ago
Read 2 more answers
The sum of a number times 8 and 21 is less than -16.
vodka [1.7K]

Hello.

First of all, let the number be t.

8 times t can be written like this:

\mathrm{8t}

Notice that the number is before the variable and the times sign (×) is not there.

We can write it as 8×t, but we usually write it as 8t.

The sum of means we add:

8t+21

Now, "less than" is "<" :

\mathrm{8t+21 < -16}

Therefore, the answer is

\mathrm{8t+21 < -16}

I hope it helps.

Have a nice day.

\boxed{imperturbability}

7 0
2 years ago
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