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3 years ago

Triangle ABC is an isosceles triangle. Sides AB and BC are congruent.

Mathematics

1 answer:

RideAnS [48]3 years ago

5 0

Here you go! hope this helps!

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Given A={x ∈ Z : x is even}, B={x ∈ Z : x is prime number}, C={x ∈ Z : x is odd}, and D={5, 7, 8, 12, 13, 15}.

Delvig [45]

Answer:

a) {15}

b) { }

c) D or {5, 7, 8, 12, 13, 15}

d) no

e) yes

Step-by-step explanation:

a) AUB: even or prime

D - (AUB) = {15}

b) AUC: even or odd; basically all integers

D - (AUC) = { }

c) A∩B : even and prime, that's only 2

D - (A∩B) = {5, 7, 8, 12, 13, 15} = D

d) A and B, both contain 2

Not disjoint

e) A and C are disjoint because no number can be both, even and odd

6 0

3 years ago

I need help in learning how to solve this equation using substitution:

Tomtit [17]

Answer:

x=3, z=-1, y=6

Step-by-step explanation:

you need to make the coefficients of each variable equal to each other then subtract 2 equations.

this one: multiply -4 in 1st

4x+4y+4z=32

-4x+4y+5z=7

_____________

8x+0-z=25

we have 2 equations with 2 variables now

2x+2z=4

8x-z=25

4 0

3 years ago

Percent error between 20 and 16

Anna35 [415]

Answer:

25%

Step-by-step explanation:

$\frac{(20-16)}{|16|}$ |×100

$\frac{4}{16}$ ×100

=0.25×100

=25%

=25%error

8 0

2 years ago

The answer is 1575 but I need to show my work! (find the total volume)

kirza4 [7]

Answer: 1575

Step-by-step explanation:

Volume of Pyramid: b*l*h/2 = 21*9*7/3 = 441

Volume of Rectangular prism = V= lwh = (21*12*9)/2 = 1134 (divide by two because it is half of a rectangular prism)

441 + 1134 = 1575

6 0

2 years ago

Help me please no links

Reptile [31]

Answer:

Step-by-step explanation:

the top and the bottom line on the squares and with the top and the bottom line on both of the arrows

8 0

3 years ago

Read 2 more answers