MATHEMATICS HIGH SCHOOL

"If triangle ABC is congruent to triangle DEF, which statement is not true?A.line segment AB is congruent to line segment DE
B.angle C is congruent to angle E
C.line segment BC is congruent to line segment EF
D.angle A equals angle D"

Answers

Answer 1

Answer:

Answer:

option B angle c is congruent to angle E

Step-by-step explanation:

because if ∆ABC is congruent to ∆DEF than angle C should be equal to angle F

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I don't understand how to do this math problem, help me?

Answers

Hello,
After a night,

f(x,y)=0 ==>df=0==>@f/@x*dx+@f/@y*dy=0
==>dy/dx=-(@f/@x)/(@f/@y) There was a mistake (in my memory)

@f/@x=6xy²+20x^4

@f/@y=5y^4+6x²y

==>dy/dx=-(6xy²+20x^3)/(5y^4+6x²y)
for x=-1 and y=2 dy/dx= -(6*(-1)*4+20*(-1)^3)/(5*2^4+6*(-1)²*2)
=44/92=11/23

or

5y^4*dy/dx+6xy²+6x²ydy/dx+20x^3=0
==>dy/dx*(5y^4+6x²y)=-6xy²-20x^3

==>dy/dx= -(6xy²+20x^3)/(5y^4+6x²y)
==>11/23

there are 40 students in a class. 60% are boys. 25% of the boys have brown hair. how many boys have brown hair?

Answers

Answer:

10 boys have brown hair

Step-by-step explanation:

40 x .25 = 10

Answer:

10 boys

Step-by-step explanation:

Which figure best represents a kite?A figure with 1 pair of parallel sides.
A figure with 2 pairs of parallel sides with the different lengths.
A square.
A kite.

Answers

A kite would be the right answer

Irwin rode his bicycle from one end of a trail to another and back at a speed of 20 miles per hour. If the trail is 4 miles long, for how many hours was Irwin riding?0.2 hours
0.4 hours
2.5 hours
5.0 hours

Answers

Answer:

C. 2.5

Step-by-step explanation:

Hope this helps and please mark Brainliset!

Answer:

i would say 0.4

Step-by-step explanation:

i really really really hope this is right

if it's not I'm going to be very sad

Ramon earns $1,715 each month and pays $53.40 on electricity. To the nearest tenth of a percent, what percent of Ramon's earnings are spent on electricity each month?

Answers

Percent of earnings spent on electricity each month is 3.1 %

Solution:

Given that Ramon earns $1,715 each month and pays $53.40 on electricity

To find: Percent of earnings spent on electricity each month

From given information,

Ramon's monthly salary = $ 1715

Electricity Rent = $ 53.40

Finding percentage of earnings spent on electricity:

Percent of earnings spent on electricity = $\frac{\text{ electricity rent}}{\text{ monthly salary}} * 100$

Substituting the values we get,

$\rightarrow (53.40)/(1715) * 100\n\n\rightarrow 0.031137 * 100 = 3.113 \approx 3.1$

Thus Percent of earnings spent on electricity each month is 3.1 %

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