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Rainbow [258]
3 years ago
13

Which statement about k(x)=-x2-2x+15 is true?

Mathematics
2 answers:
Serjik [45]3 years ago
8 0

Answer:

A

Step-by-step explanation:

kumpel [21]3 years ago
5 0

Answer:

The zeros are -3 and 5, because k(x)= -(x + 3)(x - 5).

Step-by-step explanation:

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A motorist took 1.2 hour to travel 96 km how far will he travel in 1 hour
miskamm [114]

Answer:

80km

Step-by-step explanation:

To solve this problem, we need to cross multiply. Lets input the values (1.2, 1.0, 96) as shown below:

\frac{1.2}{96} = \frac{1.0}{x}

Next we cross multiply. We multiply 1.2 and x, and we multiply 96 and 1.0.

1.2(x) = 1.2x

96 x 1.0 = 96

Now, lets put the values above back into the equation:

1.2x = 96

Lets solve this equation. First we divide 96 by 1.2.

1. x = \frac{96}{1.2}

2. x = 80

This means that our answer is 80km.

4 0
3 years ago
A small country had a population of 2,254,000 people in the year 2012. If the population grows steadily
Anuta_ua [19.1K]

Step-by-step explanation:

year 2012 population = 2,254,000*3.5%

= 78.89

each year up to 2020

so 2020 - 2012 =8

78.89*8 = 631

total population at end of 2020 =2,254,000 + 631

= 2,254631

6 0
3 years ago
What is an interval scale and what is it used for?
koban [17]
An interval scale has measurements where the difference between values is meaningful. For example, the year 0 doesn’t imply that time didn’t exist. And similarly, a temperature of zero doesn’t mean that temperature doesn’t exist at that point. Arbitrary zeros (and the inability to calculate ratios because of it) are one reason why the ratio scale — which does have meaningful zeros — is sometimes preferred.
8 0
3 years ago
Read 2 more answers
What is the radian measure of an angle of 230º?
asambeis [7]
Correct answer is the last one.
8 0
3 years ago
Use the Distributive Property to simplify the expression. 2w+4+13w+1=
coldgirl [10]

Answer:

15w+5

How I did it:

add 2 and 13 and put the "w" after the answer which is 15. Then add 4 and 1. That is 5 so then it is 15w+5.

6 0
3 years ago
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