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2 years ago

What’s the answer?!?

Mathematics

2 answers:

fiasKO [112]2 years ago

8 0

Ok the answer is really the 1st one not the 3rd one for real sorry

Stels [109]2 years ago

3 0

The area of the triangle is 50in2, so she can create only 2 triangles.

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Hello can someone help me simplify 4) and 5)? Thank you and please include steps :)

Leni [432]

Alrighty

remember some rules
$(ab)^c=(a^c)(b^c)$
and
$x^{-m}=\frac{1}{x^m}$
and
$x^0=1$ for all real values of x
and
$(a^b)^c=a^{bc}$
and
$(\frac{a}{b})^c=\frac{a^c}{b^c}$
and
(a/b)/(c/d)=(ad)/(bc)
and
$(a^b)(a^c)=a^{b+c}$
and
$\frac{a^m}{a^n}=a^{m-n}$
and don't forget pemdas
example: $-x^m=-1(x^m)$ but $(-x)^m=(-1)^m(x^m)$

so

4.
$(\frac{c^{-2}}{2})^{-2}=$

$\frac{(c^{-2})^{-2}}{2^{-2}}=$

$\frac{c^4}{\frac{1}{2^2}}=$

$\frac{c^4}{\frac{1}{4}}=$

$4c^4$

5.

$\frac{(-a)^4bc^5}{-a^2b^{-3}c^0}=$

$\frac{(-1)^4(a)^4bc^5}{-1(a^2)(\frac{1}{b^3}(1)}=$

$\frac{(1)a^4bc^5}{\frac{(-1)(a^2)}{b^3}}=$

$\frac{(a^4bc^5)b^3}{(-1)(a^2)}=$

$\frac{-a^4b^4c^5}{a^2}=$

$-a^2b^4c^5$

3 0

2 years ago

Evaluate each expression.

rusak2 [61]

12) 2.3

13) 4/13

14) 8 7/11

7) .3434...

8) 3.166...

15) (2700-600)/2700 = 2100/2700 = 21/27 = 7/9

1) .4666666667

2) .4444...

3) -0.6666666667

4) -0.8571428571

5) 3.3409090909...

6) -2.227272727273

**bar notation is when you put a bar over the repeating part of a decimal because you can't right it all since it goes on forever

3 0

3 years ago

Read 2 more answers

A bus covers a distance of 90km at a uniform speed. Had the speed been 15km/hour it would have taken 30 minutes less for the jou

Brrunno [24]

Answer:

Step-by-step explanation

Let's say d = distance, r = speed and t = time

We know the distance formula is :

distance = speed x time

d = r multiplied by t

d = rt

If the speed is 15km/hr, the time would be 30 minutes shorter.

Since d = rt,

90 = 15t

t = 6,

This means the time taken for the bus to complete the journey at 15km/hr would be 6hrs.

Originally though, the journey takes 30 minutes longer.

So we can say t = 6.5 hrs , and we know d = 90

Now we use the distance formula:

d = rt, since we want to find the original speed, we want to find r.

Speed = distance/time

r = d/t

r = 90/6.5

r = 180/13

Therefore the original speed is 180/13 km/hr

4 0

3 years ago

Help help help help help help help help help help help help help

Sever21 [200]

Answer:

its 24

kasi binabaliktad lang po ang year at value nya

7 0

2 years ago

Read 2 more answers

In a two-digit number, the product of the digits is 18 and the sum is 9. Find the number.

ycow [4]

Let the digits be x and y

Given that- xy= 18 and x+y=9

SO y= 18/x

And x+(18/x)=9

x^2 -9x+18=0

(x-6)(x-3)=0

So x=6,3

3 0

2 years ago