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Eva8 [605]
3 years ago
10

Anyone help? :/ just need a push on how to start

Mathematics
2 answers:
Alja [10]3 years ago
8 0

Answer:

Notice the line in between the 61 degrees and b

Step-by-step explanation:

I can't remember what this kind of angle is called, but when you have a straight line with another line coming out of it like this, then the sum of both angles has to equal 180 so what would you add to 61 to get to 180?

stich3 [128]3 years ago
7 0

Answer:

b=119

Step-by-step explanation:

For the straight line with 61 degrees and b would be a total of 180 degrees when added.

180-61=b

119=b

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Find the product (4x-5y)^2
sleet_krkn [62]
To find the product of (4x-5y)^2,
we can rewrite the problem as:
(4x-5y)(4x-5y) (two times because it is squared)

Now, time to use that old method we learned in middle school:
FOIL. (Firsts, Outers, Inners, and Lasts)

FOIL can help us greatly in this scenario.
Let's start by multiplying the 'Firsts' together:
4x * 4x = <em>16x^2</em>

Now, lets to the 'Outers':
4x * -5y = <em>-20xy</em> 

Next, we can multiply the 'Inners':
-5y * 4x = <em>-20xy</em>

Finally, let's do the 'Lasts':
-5y * -5y = <em>25y</em>^2

Now, we can take the products of these equations from FOIL and combine like terms. We have: 16x^2, -20xy, -20xy, and 25y^2.
-20xy and -20xy make -40xy.

The final equation (product of (4x-5y)^2) is:
16x^2 - 40xy + 25y^2

Hope I helped! If any of my math is wrong, please report and let me know!
Have a good one.
4 0
3 years ago
Find the scale factor please.
torisob [31]

Answer:

5/2

Step-by-step explanation:

The scale factor for linear measures, such as perimeter, is the square root of the scale factor for areas. The ratio of larger area to smaller is ...

... 75/12 = 25/4

so the ratio of the larger perimeter to the smaller is ...

... √(25/4) = 5/2


3 0
3 years ago
A square notepad has sides that are 10 centimeters long. What is the notepad's area?
blsea [12.9K]

Answer:

100cm²

Step-by-step explanation:

The notepad is square.

The area of a square = length X width.

All the sides of a square are the same length.

Therefore, the area of the notepad = 10 X 10 which equals 100.

Don't forget the units!

The units for area is cm².

The units for volume is cm³.

This is area so your answer is 100cm².

Hope this helped, have a nice day!

8 0
1 year ago
What is the value of x?<br> (3x+ 30)<br> 20, 15, 25, 10
slamgirl [31]

The value of <em>x </em>in the equation, (3x + 30), is 10.

5 0
3 years ago
Read 2 more answers
Which statements are true about the interquartile range? Select all that apply.​
kap26 [50]
Is there a picture? there's not enough info
4 0
3 years ago
Read 2 more answers
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