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mestny [16]
3 years ago
8

Simplify the expression: (15 + 6 − 2 ) + (−5 2 − 18 + 6)

Mathematics
2 answers:
TiliK225 [7]3 years ago
7 0

Answer:

19+-63 or -44

Step-by-step explanation:

when you add the 15 to the 6 its 21-2 is ninteen

blondinia [14]3 years ago
5 0

Answer:

-45

Step-by-step explanation:

(15+6-2)+(-52-18+6)

(21-2)+(-70+6)

(19)+-(-64)

19-64

-45

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The equation $y=-4.9t^2+3.5t+5$ describes the height (in meters) of a ball thrown upward at $3.5$ meters per second from $5$ met
Georgia [21]

Answer:

Step-by-step explanation:

The position function is

s(t)=-4.9t^2+3.5t+5 and if we are looking for the time t it takes for the ball to hit the ground, we are looking for the height of the ball when it is on the ground. Of course the height of anything on the ground is 0, so if we set s(t) = 0 and solve for t, we will find our answer.

0=-4.9t^2+3.5t+5 and factor that however you are currently factoring in class to get that

t = -.71428 seconds or

t = 1.42857 seconds (neither one of those is rational so they can't be expressed as fractions).

We all know that time will never be a negative value, so the time it takes this ball to hit the ground is

1.42857 seconds (round how you need to).

4 0
3 years ago
Find the distance between the points (-5,7) and ( -5,-4)
Lubov Fominskaja [6]

Answer:

11

Step-by-step explanation:

8 0
3 years ago
I need help please??!!!
Svetradugi [14.3K]

Hello there! This statement is TRUE.

The question is asking you if it is true that 11 - 4 is greater than 4 + 2. To get an answer, Solve both of the problems.

11 - 4 = 7.

4 + 2 = 6.

So, is 7 greater than 6? Yes, it is greater than 6 by 1. This means the answer is true. I hope this was helpful and have a great rest of your day!

4 0
3 years ago
Dominic collected data on the favorite sports of the
trasher [3.6K]

Answer:

In Grade 8, 17% of students liked running

Step-by-step explanation:

Although this table is incomplete, there are still enough information to answer.

First, we need to be aware that the data here is written in decimal numbers, which is another way to write percentages.

In other words, 100% equals to 1, which is to say that if we multiply decimal number with 100 we'll get the percentage:

0.39 = 39%

0.04 = 4%

Another important thing to establish is that the value of decimal number DOES NOT mean the number of people, it only suggests the ratio:

0.26 does not mean 26 people etc.

Knowing this, from this incomplete table, we see that 0.17 students from grade 8 liked running. And now we know that 0.17 equals to 17%, which makes B the correct answer.

5 0
4 years ago
Read 2 more answers
Which values of a and b make the following equation true<br> (5x^7y^2) (-4x^4y^5) = -20x^a y^b
Nadya [2.5K]
In x^7•x^4, how many x’s are multiplied together? (There’s 7 in the first factor and 4 in the second.)

x^7•x^4 = x^__? This is your a-value.

Similarly, y^2•y^5 = y^__? How many y’s are there in total being multiplied? This is your b-value.
5 0
3 years ago
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