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solniwko [45]
3 years ago
5

-21 – (-14) =+= Helpppp

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
3 0

Answer:

-21 - (-14) = <u>-21</u> + <u>14</u> = <u>-7</u>

Step-by-step explanation:

A - and a - make a +. So -21 - (-14) makes -21 + 14. Solve to get -7.

Hope it helps!

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Use the distributive property to write an equivalent expression.<br> 8(10n-8p+9)
LenKa [72]

Answer:

80n - 64p + 72

Step-by-step explanation:

8(10n) + 8(-8p) + 8(9)

80n - 64p + 72

8 0
2 years ago
The perimeter of the triangle below is 97 cm.
Sloan [31]

Answer:

The length of EF = x = 18 cm

Option A is correct.

Step-by-step explanation:

Ware given perimeter of triangle = 97 cm

We need to find length of EF = x = ?

The length of EG = x+7

The length of EF = x

The length of GF = 3x

The formula used is: Periemter \ of \ triangle= Sum \ of \ all \ sides \ of \ triangle

Putting values and finding x i.e length of EF

Periemter \ of \ triangle= Sum \ of \ all \ sides \ of \ triangle\\97=x+7+x+3x\\97-7=5x\\5x=90\\x=\frac{90}{5}\\x=18 \ cm

So, value of x=18 cm

The length of EF = x = 18 cm

Option A is correct.

4 0
3 years ago
I need help understanding this. SO please help and give explanation
NikAS [45]
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5 0
3 years ago
What is 0.00001 meters in nanometers
Luden [163]
The answer is 10000 because you need to flip it


5 0
3 years ago
Read 2 more answers
Please Help me. What is the answer?
vekshin1

Answer:

-11

Step-by-step explanation:

Triangle ABC

SO,

AB = AC +BC

x + 8 = 2x -5 + (BD + DC)

x + 8 = 2x-5 + 10 +14

x + 8 = 2x + 19

2x - x = -19 + 8

x = -11

5 0
3 years ago
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