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yawa3891 [41]
3 years ago
14

Someone help please

Mathematics
2 answers:
Masteriza [31]3 years ago
7 0
Answer: C) 42.3 cm^2

formula for the area if a trapzoid:
A= .5*(b1+b2)*h

A= .5(5.6+8.5)*6
A= 42.3
Vadim26 [7]3 years ago
7 0
42.3cmjdjsusjdhjdjdjdjdjhddjekiddjdjdjdjdjdjdididdiidjddijdjdjdiidi
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A house was purchased in 2005 for $150,000. It is now valued at $135,000. What is the percent of change for the house?
Ann [662]
22,500+135,00= 157,000
15% is wrong, 15% equals 22,500

Next, 10% 15000

If you add 15000 to 135000 it will equal 150000 so 10% is correct.
6 0
2 years ago
I NEED HELP IN MATH!!! It’s due tonight and I’ve tried to do it and it don’t fully understand please help if u can!!!
Katyanochek1 [597]

Answer:

1. 42

2. 77

3. 87.75

4. 117

5. 119

6. 89.25

7. 39

8. 58.5

9. 218.75

Good Luck!

6 0
3 years ago
Read 2 more answers
PYTHAGOREAN THEOREM
Sav [38]

Answer:

the answer is 29

Step-by-step explanation:

a^2 + b^2 = c^2 (btw ^ means to the power)

a and b are the legs. c is the hypotenuse

21^2 + 20^2 = c^2

441 + 400 = 481

then we have to square it.

the square root of 481= 29.

btw the hypotenuse is always going to be bigger than the legs.

hope it helps!! btw it is right!

7 0
3 years ago
Read 2 more answers
Use basic trigonometric identities to simplify the expression: sin (-x) cos (-x) csc (-x) =?
Anestetic [448]

Answer:

sin (-x) cos (-x) csc (-x) =cos(x)

Step-by-step explanation:

We know by definition that the cosine is an even function, therefore

cos (-x) = cos (x)

We also know that the sin is an odd function, therefore

sin (-x) = -sin (x)

By definition:

cscx = \frac{1}{sinx}.

Then:

csc(-x) = \frac{1}{sin(-x)}.

csc(-x) = -\frac{1}{sin(x)}.

Using these trigonometric properties we can simplify the expression

sin (-x) cos (-x) csc (-x)= -sin(x)cos(x)*(-\frac{1}{sin(x)})\\\\sin (-x) cos (-x) csc (-x)=cos(x)

7 0
3 years ago
Read 2 more answers
Use the the triangle.
KATRIN_1 [288]
For a 45 45 90 triangle if the legs are x length then the hyptonuse is x√2

a.
7=x
so hyptonuse=7√2 in

b.
sin(45°)=(√2)/2

c.
not sure what you need SAS for
but, area=1/2 times base times height
base=height=7
area=1/2 times 7 times 7=24.5 square inches

d. not sure, same as above?
7 0
3 years ago
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