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3 years ago

Combine like terms 7a - a+ 16 = ?

2 answers:

4 0

6a+16

Explanation:
If there's just a variable, there's an understood 1 in front of it. So what that really says is:

7a-1a+16

So, you combine the a's. 7a minus 1a is 6a. Same as 7-1,but you have a variable stuck on the end of it.

6a+16

:^)

Katen [24]3 years ago

3 0

7a - a + 16 =

7a - a = 6a

6a + 16 =

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Bill says that

drek231 [11]

Cause 6^8 = 1679616 while if 3^5 times 2^3 only = 1944

6 0

3 years ago

50 POINTS!!!! Make a box and whisker plot of the data See photo

lara [203]

Let's try it just using test taking skills first, without really knowing anything about what these plots are.

All have a minimum of 13 and a max of 29 so those don't help.

Three have a left box edge of 14.5, one 12.8 or so. The correct answer is probably 14.5.

Three have a median of 19.5, one of 20.5, so 19.5 is probably right.

Similarly 23.5 is the most common right box edge.

So we're looking for the plot with 13/14.5/19.5/23.5/29, which is the first choice.

----

Instead of Einsteining the test, lets review the material. A box and whiskers plot shows the min and max (whisker ends), the 25th and 75th percentiles (box ends) and the 50th percentile, the median, which is the dot in the middle.

Let's start by sorting the 8 data points:

11 13 16 18 21 23 24 29

The minimum is 11 and the maximum is 29. All the charts agree on this.

The median is the middle, which is the average of 18 and 21, so

median = 19.5

That rules out the one selected, it can't be the third one.

The 25th percentile basically the median of the first four numbers, so the average of 13 and 16,

25th percentile = 14.5

The 75th percentile is similarly the average of 23 and 24

75th percentile 23.5

Examining the choices we find our

Answer: first choice

5 0

4 years ago

7 3 × √ 7 as a single power of 7

andrezito [222]

Step-by-step explanation:

$first \: take \: square \: root \: of \: \sqrt{7} then \: multiply \: by \: 73 \: and \: you \: will \: get \: answer$

4 0

3 years ago

Read 2 more answers

I need to do all of them.

OLEGan [10]

uh, solve for x? Its simple, but first, since it is a prep for a test, you should study how to solve for x, which is easy. So To solve for x, bring the variable to one side, and bring all the remaining values to the other side by applying arithmetic operations on both sides of the equation. Simplify the values to find the result.

Let’s start with a simple equation as, x + 2 = 7

How do you get x by itself?

Subtract 2 from both sides

⇒ x + 2 - 2 = 7 - 2

⇒ x = 5

Now, check the answer, x = 5 by substituting it back into the equation. We get 5 + 2= 7.

L.H.S = R.H.S

And then for a triangle:

Solve for x" the unknown side or angle in atriangle we can use properties of triangle or thePythagorean theorem.

Let us understand solve for x in a triangle with the help of an example.

△ ABC is right-angled at B with two of its legs measuring 7 units and 24 units. Find the hypotenuse x.

then in △ABC by using the Pythagorean theorem,

we get AC2 = AB2 + BC2

⇒ x2 = 72 + 242

⇒ x2 = 49 + 576

⇒ x2 = 625

⇒ x = √625

⇒ x = 25 units

get it? Good

5 0

3 years ago

Can someone explain how to solve #9

SVETLANKA909090 [29]

FeelsBadMan GL on that one

5 0

3 years ago