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Wittaler [7]
3 years ago
8

How can you be sure you've used the properties of operations correctly to form an expression that is equivalent to the original

one?​
Mathematics
1 answer:
oee [108]3 years ago
8 0
Im not sure about this one
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Challenge An arts academy requires there to be 4 teachers for every 76 students and 3 tutors for
klio [65]

Answer:

12. 5

11.

10

10

15. 7

14. 11

2

=

16

16

18. 3

+

11

17

3

4

co

loo

8

Step-by-step explanation:

12. 5

11.

10

10

15. 7

14. 11

3 0
3 years ago
Write this ratio as a fraction in simplest form without any units. <br><br> 3 pounds to 42 ounces
mihalych1998 [28]

without changing units, since we can have a lbs:oz ratio, and that's perfectly fine

\bf 3:42~\hspace{5em}\cfrac{\stackrel{lbs}{3}}{\stackrel{oz}{42}}\implies \stackrel{\textit{simplified}}{\cfrac{1}{14}}~\hspace{5em}1:14

8 0
3 years ago
Which is a correct first step for solving this equation? 2x−1(5−3x)=4x+2
GuDViN [60]

Answer:

distribute

Step-by-step explanation:

so multiply -1 with 5 and -3

this turns it to 2x(-5+3x)=4x+2

then you multiply 2x to -5 and 3x

so on...

6 0
4 years ago
Hey there! I would like some help please :) Thanks!
Alchen [17]
AC is a common side, ∠ACD = ∠ACB and CD = BC   ⇒ ΔACD and ΔABC <span>are congruent (SAS definition).

</span>Congruent triangles have exactly the same three angles, so ∠D = ∠B.<span>

</span>
3 0
3 years ago
Triangle ABC is a right triangle. The legs of the triangle are AB = 6 cm and BC = 12 cm. Find the measure of angle A.
Mnenie [13.5K]

Answer:

63.4°

Step-by-step explanation:

Given that AB and BC are the legs of the right triangle, then opposite to angle A is side BC and adjacent to angle A is side AB.

By definition, the tangent of angle A is:

tan(∠A) = opposite leg / adjacent leg

tan(∠A) = BC/AB

tan(∠A) = 12/6

∠A = arctan(2)

∠A = 63.4°

8 0
3 years ago
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