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Svetach [21]
3 years ago
14

Evaluate the expression 4 (9-16)

Mathematics
1 answer:
AlexFokin [52]3 years ago
3 0

Answer:

-28

Step-by-step explanation:

multiply both 9 and 16 by 4 and then subtract the sum of 16 × 4 from 9 × 4.

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Solve the quadratic equation.<br>-7n^2=-448<br>​
Zolol [24]

Answer:

n = 8

Step-by-step explanation:

-7n² = -448

=> n² = -448 / -7

=> n² = 64

=> n = \sqrt{64}

=> n = 8

Hope it helps :)

Please mark my answer as the brainliest

5 0
2 years ago
Simplify the complex fraction. Please show all work!
Olin [163]

Answer:

3(u^2 +u-3)

-------------------

u(u-3)^2

Step-by-step explanation:

u         1

---- + -------

u-3      u

-------------------------

    u-3

  ----------

    3

Get a common denominator for the numerator

u *u         1(u-3)

----      + -------

(u-3)u      u(u-3)

-------------------------

    u-3

  ----------

    3

u *u + (u-3)

-----------

(u-3)u      

-------------------------

    u-3

  ----------

    3

Now use copy dot flip

u *u + (u-3)        3

----------------- * -------------

(u-3)u                 u-3

3(u^2 +u-3)

-------------------

u(u-3)^2

7 0
3 years ago
An angle measures 43°. Find the measure of its supplement and the measure of its complement
Varvara68 [4.7K]

Answer:

supplement: 137

complement: 47

Step-by-step explanation:

Supplement is two angles that equal 180, so just subtract 43 from 180.

complement is two angles that equal 90, so 90-43=47

7 0
2 years ago
Sixteen percent of videos are shorter than what
Svetlanka [38]

Answer:

189 seconds

Step-by-step explanation:

16% shorter,

Left side first and second group is 2.5% and 13.5% = 16%

189 is the max of that group

6 0
3 years ago
Read 2 more answers
3x+2&lt;11 please show work
9966 [12]

Answer:

Step-by-step explanation:

3x+2<11

3x<9

3x/3<9/3

X<3

X=3

3 0
2 years ago
Read 2 more answers
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