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Vedmedyk [2.9K]
3 years ago
7

Please help, it’s a test and i don’t understand PLSPLS I HAVE LESS THAN AN HOUR!!!!

Mathematics
1 answer:
omeli [17]3 years ago
5 0

Answer:

1. obtuse

2. straight

3. acute

4. 62°

5. 72° ( I think, I'm not too sure on this one)

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Which algebraic expression represents “the difference of fifty-four and seven times a number”? 54 minus 7 n StartFraction 54 Ove
VMariaS [17]

Answer: 54-7n

Step-by-step explanation:

When we talk about mathematical language, the <u>difference </u>between two numbers, quantities or terms is the <u>substraction operation.</u>

For example, the <u>difference</u> between a and b is:

a-b

On the other hand, if we read a numer c <u>times</u> a number n, this means both numbers are multiplied.

For example:

c <u>times</u> n is:

(c)(n)

So, according to the explained above, “the difference of fifty-four and seven times a number n” is:

54-7n

8 0
3 years ago
Read 2 more answers
A triangle has an area of 3x^2+9x-54 square centimeters. If the height of the triangle is x+6 centimeters, find the length of th
JulijaS [17]
It should be b = 6(x - 3)
7 0
3 years ago
What is the square root of 1,290?? ASAP Please!! 15 points!
dimaraw [331]

Answer:

35.9

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
I dont understand how to find Which ordered pair is a solution of the equation? y=8x+3
WARRIOR [948]

Answer:

Step 1:

To find ordered pair solutions, you could create an x and y graph and fill out the x side. Then, plug in an x number to get your y number and graph the ordered pairs to see if they give you a straight line. I'm going to use these numbers: -1, 0, 1, and 2.

...x...|...y...

\left[\begin{array}{ccc}-1&?\\0&?\\1&?\\2&?\end{array}\right]

Now, let's plug in -1 into the equation first to see what we get for y.

y=8(-1)+3\\y=-8+3\\y=-5\\(-1,-5)

-5 is our y if x was -1.

We do the same for the other three numbers.

y=8(0)+3\\y=0+3\\y=3\\(0,3)

y=8(1)+3\\y=8+3\\y=11\\(1,11)

y=8(2)+3\\y=16+3\\y=19\\(2,19)

Step 2:

With all that done, we can now fill out our table and graph the points.

....x...|...y....

\left[\begin{array}{ccc}-1&-5\\0&3\\1&11\\2&19\end{array}\right]

If you graph these points on graph paper / a graphing website, you will see that these points go in a straight line. If you are given an ordered pair already (for example: (3,5)), then all you have to do is plug in the x into the equation (3) and see if the outcome is true (5).

5=8(3)+3\\5=24+3\\5\neq 27

Since they don't equal each other, then (3,5) is false.

Here is the graph for the table above. I hope I helped you!

8 0
3 years ago
Seth says 10 divided by 5.49 equals 1.82 is he correct?
Savatey [412]
Yes. 
He rounded it. 
The exact answer is 1.82149362477
4 0
4 years ago
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