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Paul [167]
3 years ago
5

The angle of the roof is 56 she built the doll house with a scale of 1:4 what is it measured

Mathematics
1 answer:
umka2103 [35]3 years ago
6 0
56* angles scale regardless of size 90* @ 9mmx9mm is still 90* in 9kmx9km
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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
salma is 1.45 meters tall. at 3p.m she measures the length of a tree's shadow to 29.35 meters. she stands 24.3 meters away from
Sophie [7]

Answer:

23.67

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Jaquon made 252 calls in 36 days. What is the average number of calls he made in a day?
Rainbow [258]
Do 252 divided by 36 and you should get 7. so the average number of calls would be 7
5 0
3 years ago
Read 2 more answers
Please help!!!!!!
Andre45 [30]

Since we know one root, which is -3, we can use synthetic division to find (x+3) would need to be multiplied by to get the original polynomial. Then, we factor the quadratic to find the other two factors, which are 1/2 and -2

3 0
3 years ago
Area of a circle
Nutka1998 [239]

Answer:

49 pie

Step-by-step explanation:

Area of a circle is pie(radius squared)

radius is half diameter

7 0
2 years ago
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