All categories

3 years ago

Can someone give me the answers please it’s due in 20 mins

Mathematics

1 answer:

Deffense [45]3 years ago

8 0

Answer:

1. a cannot equal 8 and 9.

2. B cannot equal 14 and 15.

3. No, because it is equal to 5, and the inequality says that it is strictly less than 5.

4. Yes. 8 times 3 is 24, which is less than 32.

Step-by-step explanation:

You basically plug the numbers in, and see if they could be true.

You might be interested in

A football coach is trying to decide: When a team is ahead late in the game,

brilliants [131]

Answer:

I play football and my coach will do this: Play a "prevent* defense that guards against long gains but makes short

gains easier.

Step-by-step explanation:

8 0

2 years ago

15 is 9 than j what is j in this question

marysya [2.9K]

Answer:

Step-by-step explanation:

15 is 9 more hence you subtract 9 from15

Hope this helps

3 0

2 years ago

A research team is testing whether a fuel aditive increases a car's gas mileage. The maker of the additive claims that the addit

Thepotemich [5.8K]

Answer:

Yes there is sufficient evidence to reject the company's evidence

Step-by-step explanation:

From the question we are told that

The sample size is n = 25

The mean is $\= x = 5.3 \ mpg$

The standard deviation is $\sigma = 1.8 \ mpg$

The z-score is z = -1.94

The null hypothesis is $H_o : \mu = 6 \ mpg$

The alternative hypothesis is $H_a : \mu \ne 6$

Generally the p-value is mathematically evaluated as

$p-value = 2 * P( Z$

From the z table the area under the normal curve to the left corresponding to -1.94 is

$P( Z$

=> $p-value = 2 * 0.02619$

=> $p-value = 0.052$

Let assume the level of significance is $\alpha = 0.05$

Hence the $p-value > \alpha$ this mean that

The decision rule is

Fail to reject the null hypothesis

The conclusion is

There is sufficient evidence to reject the company's evidence

5 0

3 years ago

A scatter plot is made comparing x, the number of hours since midnight, with y, the number of lights turned on in a house. What

Zepler [3.9K]

Answer:

7 hours since midnight and 8 lights turned on.

Step-by-step explanation:

(x,y) so 7 is the x and 8 is the y.

8 0

2 years ago

Can someone complete the square

pshichka [43]

To do these, start by looking at the "b" value -6.
divide it by 2

-6/2 = -3

now square this number

(-3)^2 = 9

this is what you need for the "c" value

there is only a 5 for the c value so add 4 to both sides of the equation. ( +4 = +4)

y +4 = x^2 -6x +5 +4
y +4 = x^2 -6x +9
y +4 = (x -3)^2
y = (x -3)^2 - 4

vertex ( 3, -4) upwards facing like a bowl, because the "a" value is positive. So the vertex is the minimum, lowest point on the graph.

7 0

3 years ago