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3 years ago

Are all right angles congruent? yes or no

Mathematics

2 answers:

Vsevolod [243]3 years ago

8 0

Yes. All right angles measure 90 degrees so they have to be. congruent.

Juli2301 [7.4K]3 years ago

7 0

Answer:

Yes

Step-by-step explanation:

All right angles are congruent according to Elucid's 5 postulates.

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If a b and c are three different numbers which of the following equations has infinitely many solutions

Dafna1 [17]

Answer:

c. ax+b=ax+b

Step-by-step explanation:

To know what equation has infinite solutions, you first try to simplify the equations:

$ax=bx+c\\\\(a-b)x=c\\\\x=\frac{c}{a-b}$

In this case you have that a must be different of b, but there is no restriction to the value of c, then c can be equal to a or b.

$ax+b=ax+c\\\\b=c$

Here you obtain that b = c. But the statement of the question says that a, b and c are three different numbers.

$ax+b=ax+b\\\\0=0$

In this case you have that whichever values of a, b and are available solutions of the equation. Furthermore, when you obtain 0=0, there are infinite solutions to the equation.

Then, the answer is:

c. ax+b=ax+b

8 0

3 years ago

If f (x) = 2x2 - 4x, what is the value of f(3)

poizon [28]

Answer:

f(3) = 6

Step-by-step explanation:

f(3) = 2(3)^2 - 4(3)

f(3) = 6

6 0

4 years ago

Read 2 more answers

Josie spent 4/7 of ten money in her purse on some books, and the rest of the money on 18 markers. Each marker cost $1.20. How mu

NeTakaya

Let's assume money in Josie's purse to begin with as 'x'

There are 18 markers

Each marker cost $1.20

so, we can find total cost of markers

Total cost of markers = ( total number of markers)*(price of each marker)

so, we can plug value

Total cost of markers is

$=18\times 1.20$

$=21.6$ $

now, we are given

Josie spent 4/7 of the money in her purse on some books

the rest of the money on 18 markers

so, rest money is

$=x-\frac{4}{7} x$

$=\frac{3}{7} x$

and this rest money is total cost of markers

so, we can set them equal and then we can solve for x

$\frac{3}{7} x=21.6$

$7\cdot \frac{3}{7}x=21.6\cdot \:7$

$3x=151.2$

$x=50.4$

So, total money in Josie's purse in beginning is $50.4..........Answer

8 0

3 years ago

2 thousandths + 4 hundredths

ratelena [41]

The answer would be 0.042

6 0

4 years ago

Your friend Cameron just bought a top-of-the-line mountain bike and paid with cash, like Dave recommends. He listed his old one

Alex73 [517]

Answer: Use your money wisely

Step-by-step explanation:

7 0

3 years ago