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OleMash [197]
3 years ago
15

9+___=10 1+____=10 200+500+2000-3000

Mathematics
1 answer:
Paladinen [302]3 years ago
8 0

Answer:

1

Step-by-step explanation:

You might be interested in
1p
goblinko [34]

Answer:

O 81 km per hour

Explanation

Given parameters:

Number of days traveled  = 3 days

Distance covered on the first day  = 1080km

Time of travel  = 10hrs

Rate of travel  = 108km/hr

Time of travel on second day = 12hrs

Rate of travel  = 90km/hr

Time of travel on third day  = 18hrs

Rate of travel  = 60km/hr

Unknown

Average speed  = ?

To find the average speed, we sum the distances and divide by the sum of the time.

  Average speed  = \frac{Total distance}{total time}

we do not know the second and third distances;

  Distance  = speed x time

D2  = 90 x 12 = 1080km

D3  = 60 x 18  = 1080km

    Now;

  Average speed  = \frac{1080 + 1080 + 1080 }{10 + 12 + 18 }

 

 Average speed  = \frac{3240}{40}   = 81km/hr

The average speed is 81km/hr

6 0
3 years ago
H(y)=9/5 • 2y at y=-2
Deffense [45]

Answer:

H( - 2) = - 7  \frac{1}{5}

Step-by-step explanation:

We want to evaluate the equation

H(y) =  \frac{9}{5}  \times 2y

at y=-2

We just have to substitute to obtain;

H( - 2) =  \frac{9}{5}  \times 2 \times  - 2

We now multiply to get:

H( - 2) =  \frac{9}{5}   \times  - 4

This is the same as:

H( - 2) =  \frac{9}{5}  \times \frac{ - 4}{1}

We multiply the numerators separately and denominators separately to get:

H( - 2) =  \frac{9 \times  - 4}{5 \times 1}

H( - 2) =  \frac{ - 36}{5}

This implies that

H( - 2) = - 7  \frac{1}{5}

6 0
3 years ago
What is the factored form of x^2-9x+20
mina [271]

Answer:

(

−

5

)

(

−

4

)

Step-by-step explanation:

Not 100 percent sure

4 0
3 years ago
Simplify the expression:<br> 2(2 + 7b) =
nikitadnepr [17]

Answer:

4 + 14b

Step-by-step explanation:

First, you need to distribute so,

2*2= 4   and

2*7b= 14b

4 0
3 years ago
----- is 10 times as much as 53
Kobotan [32]

Answer:

I think it's right answer is 530

4 0
3 years ago
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