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3 years ago

PLS PLS PlS PLS PLS HELP

Mathematics

2 answers:

Vadim26 [7]3 years ago

7 0

Answer:

use common sense!!!!!!!!!!!!!!!!!!!!!

lara31 [8.8K]3 years ago

5 0

Answer:

45 cm

Step-by-step explanation:

since perimeter of ABC is 42, you subtract 12 from 42 to give you 30, and since ABC is isosceles you divide 30 by 2 to give you 15 for AB and BC and because BDC is equilateral, 15, 15, 15 each side gives you 45 cm

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on monday, 251 students went on a trip to the zoo.all 5 buses were filled and 6 students had nto travel in cars.how many student

Norma-Jean [14]

Answer: 49

Step-by-step explanation:

251-6=245

245/5=49

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3 years ago

How to solve this system of equal: x+y+z=1;x^2+y^2+z^2=1

swat32

There are infinitely many solutions.

Algebraically, we can eliminate $z$ and try to solve for $x,y$ :

$x+y+z=1\implies z=1-x-y$

Then

$x^2+y^2+(1-x-y)^2=1$

$\implies x^2+y^2+1-2x+x^2-2y+y^2+2xy=1$

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4 years ago

79=11x+13 <br> Solve each equation by using the properties of equality and justify each step

neonofarm [45]

Solution: X=6

Detailed explanation:

In this problem we're asked to find "x" or the unknown.

The first step is to subtract 11x from both sides.

$---\mapsto\boldsymbol{-11x+79=13}$

Next, subtract 79 from both sides.

$---\mapsto\boldsymbol{-11x=-66}$

To finish this off, divide both sides by -11.

$---\mapsto\boldsymbol{x=6}$

Voila! There's our answer!

<h2><em>Cheers!! ^-^</em></h2>

___________________

Hope I helped. Best wishes.

Reach far. Aim high. Dream big.

___________________

8 0

2 years ago

Read 2 more answers

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Aleonysh [2.5K]

I believe the answer is 48 ... hope this helps

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3 years ago

Pls help i dont understand

Alisiya [41]

The formula for the circumference is 2πr.

The diameter d is given, which is 2 times the radius r (d = 2r)

So you have to calculate π d = 3.142×1.8 ≈ 5.7

6 0

3 years ago