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laiz [17]
3 years ago
12

7(3+5)= ___+___ 15-10=___ (3-2) (20 points)

Mathematics
2 answers:
stich3 [128]3 years ago
6 0

Answer:

7(3+5)= 7×3+7×5=21+35=56

15-10=5(3-2)=5×1=5

Reil [10]3 years ago
4 0

Answer:

7(3) + 7(5) = 21 35

5

Step-by-step explanation:

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Emergency workers in a small city estimate that in he event of a hurricane they would need to transport3,250 people out of the c
harkovskaia [24]

Answer:

68 buses

Step-by-step explanation:

3250÷48=67.7083333333

round off 67.7083333333 so we will get 68

6 0
2 years ago
Find the domain of the function.<br> f(x)= x+2/1-X
Ymorist [56]

Answer:

all real numbers expect  1.

Step-by-step explanation: This is a rational function. when we  usually the find the domain of a rational function we would look at the bottom because you don't want the denomonatior to be zero because dividing by zero in math makes the range undefined. so we use the equation and set it up to zero to find the domain. 1-x=0 -x=-1, divide by -1 and we get  1.  So x can be any numbers expect 1. Interval notation: (-∞,1)∪(1,+∞)

3 0
3 years ago
The function shown below was created to track the different intervals of speed that an automobile travels over a period of 28 se
Ksenya-84 [330]

Answer:

1. The car is slowing down at a rate of 2.5mph/s

2. The greatest acceleration is 10 mph/s.

3. In the interval 4s to 16s the speed remains constant and has magnitude 25 mph.

Step-by-step explanation:

1. The deceleration of the car is from 16 seconds to 24 seconds is the slope m of the graph from 16 to 24:

m=\dfrac{\Delta speed }{\Delta time } = \dfrac{5-25}{24-16} =-2.5mph/s

the negative sign indicates that it is deceleration.

2. The automobile experiences the greatest change in speed when the slope is greatest because that is when acceleration/deceleration is greatest.

From the graph we see that the greatest slope of the graph is between 28 and 24 seconds. The acceleration the interval is the slope m:

m= \dfrac{45-5}{28-24}= 10mph/s

3. The automobile experiences no acceleration in the interval 4 s to 16 s—that's the graph is flat.

The speed of the automobile in that interval, as we see from the graph, is 25 mph.

7 0
3 years ago
Read 2 more answers
How did her grandmother get married? In the house on mango street
V125BC [204]

Answer:

She knew that they were destined to be together. She even smelt like mangos. She also had a pastor come to her house and help her get married. It is actually not that difficult to figure out.

Step-by-step explanation:

Brainliest?

8 0
3 years ago
Joe is making a ramp.Find the length of the ramp if the height is 7meters and the base is 24 meters
Musya8 [376]

Answer:

the length of the ramp is 25 meters

Step-by-step explanation:

Joe is making a ramp. Ramp forms a right angle triangle with the base

So we use Pythagorean theorem to find the length of the ramp

AC^2(hypotenuse) = AB^2 + BC^2

Length of ramp is the hypotenuse = \sqrt{height^2 + base^2}

=\sqrt{7^2 +24^2}

= \sqrt{49 + 576^2}

= \sqrt{625}

= 25

so the length of the ramp is 25 meters

8 0
3 years ago
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