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earnstyle [38]
3 years ago
5

Help Please! Will mark brainliest. =) Need help on two questions. See photos.

Mathematics
1 answer:
Mashcka [7]3 years ago
6 0
When all sides of a quadrilateral are equal (indicated by tick marks on the four sides) in length and connect the opposing vertices with a line, it will form four 90° angles. Therefore, each equation will equal 90.

10x= 90

x+y= 90

3z= 90

The measure of angles 1 and 3 can be solved as they are so:

10x= 90 ➡️ x=9

3z= 90 ➡️ z= 30

The value of x is needed to solve for the measure of angle 2 so plug in the value of x and solve:

x+y= 90

9+y= 90

y= 81

Therefore the answer is a.
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It is very confusing with negatives so what do I do
Kamila [148]
A lot of people find it easier to visualize what the least to greatest would look like. So imagine a number line that starts (in the middle) at 0. All numbers to the right get GREATER and GREATER. Going for 0 to 1 to 2.... and higher. Going to the left it gets LOWER and LOWER. So, -1 to -2 to -3 and onward. Basically what I'm trying to say is the farther you are to the left the smaller you are. 

Another way you can think of it is you could remove the negative, and put them in order from least to greatest. Then when you add the negative back you would flip the order. So let's do that with our current problem: (Keep in mind that if you do this with sequences that are not all negative numbers you need to make the positive numbers negative. Or you can write out a number line and put all the numbers on it) 

Our Numbers:
-1.639, -7.06, -7.6, -0.6299, -7.0699, -7.399

Remove the Negative Temporarily: 
1.639, 7.06, 7.6, 0.6299, 7.0699, 7.399

Put the numbers in order from least to greatest:
0.6299, 1.639, 7.06, 7.0699, 7.399, 7.6 

Now add the negative sign back: 
-0.6299, -1.639, -7.06, -7.0699, -7.399, -7.6

Now reverse the order to get the correct answer: 
-7.6, -7.399, -7.0699, -7.06, -1.639, -0.6299

4 0
3 years ago
What is the square root of 2
kotegsom [21]
The square root of 2 is 1.41
6 0
3 years ago
Read 2 more answers
If 2x-1 / 3 = -4x , then x=
katrin2010 [14]

Answer:

x=11/8

Step-by-step explanation:

As a decimal is 1.375

3 0
3 years ago
Help asap 25 points worth pre alg<br> x=<br> y=
Mumz [18]

Answer:

Firstly Substitute y=2x-5 into 5x-4y=-10

This will be 5x-4(2x-5)=10 now solve for x

5x-8x+20=-10

-3x=-30

X=10

Now sub x as 10 into the second equation y=2x-5

Y=2(10)-5

Y=15

8 0
3 years ago
Cho f(t)=(t-4)u(t-2)phep bien doi laplace la<br> F(s)=e^-2s/s^2-2e^-2s/s62
FinnZ [79.3K]

Step-by-step explanation:

cho f(t)=(t-4)u(t-2)phep bien doi laplace la

F(s)=e^-2s/s^2-2e^-2s/s62

4 0
3 years ago
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