All categories

3 years ago

??????????????????????

Mathematics

2 answers:

Olenka [21]3 years ago

7 0

Well we know that A+B+C=180
and we know that A=45 and B=90
so together there 135
180-135=45
so C=45
now we also know that a straight line is 180 degrees so 180-45 =135(angle f)
135+15(angle e)=150
180-150=30
so angle d=30

lukranit [14]3 years ago

5 0

45 and 30 that is the answer

You might be interested in

What is the slope of the line? -2/5 2/5 5/2 1/3

oksano4ka [1.4K]

Answer:

Step-by-step explanation:

(0, 3) (5, 1)

(1-3)/(5-0) = -2/5 is the slope

6 0

3 years ago

Read 2 more answers

PLZ HELP I NEED A THIS DONE IN LIKE 30 MIN

strojnjashka [21]

Answer:

51200 i think sorry if is get this wrong warn me sorry 8 hours

Step-by-step explanation:

6 0

3 years ago

Please someone what is the total surface area of this pryamid

Dimas [21]

Answer:

$\large\boxed{C.\ (25+25\sqrt3)\ in^2}$

Step-by-step explanation:

We have the square and four equilateral triangles.

The formula of an area of a squre:

$A_S=a^2$

a - length of side

The formula of an area of an equilateral triangle:

$A_T=\dfrac{a^2\sqrt3}{4}$

a - length of side

Clculate the areas:

SQURE:

$A_S=x^2\ in^2$

TRIANGLE:

$A_T=\dfrac{x^2\sqrt3}{4}\ in^2$

The SURFACE AREA of a square pyramid:

$S.A.=A_S+4A_T\\\\S.A.=x^2+4\cdot\dfrac{x^2\sqrt3}{4}=x^2+x^2\sqrt3$

Put x = 5:

$S.A.=5^2+5^2\sqrt3=(25+25\sqrt3)\ in^2$

7 0

3 years ago

How do I solve this equation? (3a)/(2a+1)-(4)/(2a-1)=1

Gnoma [55]

now solve the quadretic eq. for the value of a
I hope it help to u

4 0

4 years ago

Solve for x and y 3x + 2y = 16 7x + y = 19 (-2,-5) (-2,5) (2,5) (2,-5)

Aliun [14]

Answer:

(2,5)

Step-by-step explanation:

it's (2,5) just to let you now

3 0

3 years ago