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finlep [7]
3 years ago
6

What force would be required to accelerate a 1,100 kg car to 0.5 m/s2?

Mathematics
2 answers:
Likurg_2 [28]3 years ago
8 0
Force = mass x exceleration 
1100 x 0.5 = 550
AlexFokin [52]3 years ago
4 0
Answer: 550 N

Identify the given information. 
m = 1100 kg
a = 0.5 m/s²

Choose which formula you should use. In this case, you are finding the force.
f = ma, where m is the mass and a is the acceleration.

Substitute and solve.
f = (1100 kg)(0.5 m/s²)
f = 550 N
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Find the product of 9x(-3x²y-7xz)
kogti [31]

Answer:

- 27 {x}^{3} y - 63 {x}^{2} z

Step-by-step explanation:

9x( - 3 {x}^{2} y - 7xz)

= 9x \times ( - 3 {x}^{2} y)  + 9x \times ( - 7xz)

=  - 27 {x}^{3} y - 63 {x}^{2} z

4 0
3 years ago
In a bowl, there are 3 peaches, 2 apples, 6 lemons, and 4 plums. If 1 piece of fruit is to be selected at random, what is the pr
wolverine [178]
All together there are 15 pieces of fruit
out of 15, 6 of them are lemons.
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6/15
which reduces to
2/5
3 0
3 years ago
The radius of a semicircle is extended by 6 inches.how does the measure of the semicircles arc length change?
vivado [14]
Let x be the original radius.  Given that a semicircle will have an arc length of half of a circumference and C=2pr, the arc length will be just pr.

Now the difference of arc is then going to be:

p(6+x)-px

p(6+x-x)

6p inches

So the arc will be 6p inches longer.  Or if you wish to approximate...

≈18.85 inches
7 0
3 years ago
A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms
MissTica

Answer:

t = \frac{39.5-30.6}{\frac{6.6}{\sqrt{25}}}= 6.74

The degrees of freedom are given by:

df =n-1= 25-1=24

Now we can calculate the p value with the following probability:

p_v = 2*P(t_{24}>6.74)= 5.69x10^{-7}

And for this case since the p value is lower compared to the significance level \alpha=0.05 we can reject the null hypothesis and we can conclude that the true mean for this case is different from 30.6 at the significance level of 0.05

Step-by-step explanation:

For this case we have the following info given:

\bar X = 39.5 represent the sample mean

s =6.6 represent the sample deviation

\mu = 30.6 represent the reference value to test.

n = 25 represent the sample size selected

The statistic for this case is given by:

t =\frac{\bar X -\mu}{\frac{s}{\sqrt{n}}}

And replacing we got:

t = \frac{39.5-30.6}{\frac{6.6}{\sqrt{25}}}= 6.74

The degrees of freedom are given by:

df =n-1= 25-1=24

Now we can calculate the p value with the following probability:

p_v = 2*P(t_{24}>6.74)= 5.69x10^{-7}

And for this case since the p value is lower compared to the significance level \alpha=0.05 we can reject the null hypothesis and we can conclude that the true mean for this case is different from 30.6 at the significance level of 0.05

3 0
3 years ago
there are 7 yellow marbles and 10 orange marbles in a bag you randomly choose one of the marbles what is the possibilty of choos
densk [106]

Answer:

probability; ( of choosing a yellow marble)

7 yellow marbles + 10 orange marbles = 17 in total

if the no of yellow marbles is 7 therefore = ⁷/10

so that is the probability ⁷/10

Hope this helps

4 0
2 years ago
Read 2 more answers
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