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LekaFEV [45]
3 years ago
14

What is seven decreased by 3 times some number

Mathematics
2 answers:
MArishka [77]3 years ago
8 0

Answer:

7 - 3x

Step-by-step explanation:

let "some number" = x

"3 times x" = 3(x)

"seven decreased by" 7 -

Put together the phrases.

"seven decreased by 3 times x" is 7 - 3x

7 - 3x is your answer

~

natulia [17]3 years ago
5 0

the answer to the question is 7-3x.

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the perimeter of a triangle is 59 in. The longest side is 11in. longer than the medium side, and the medium side is 3in longer t
Nataly_w [17]
Let the length of shortest side be - x
length of medium side - x +3
length of longest side - x +3 + 11
so , according to question
=> x + x +3 + x +3 + 11 = 59
=> x + x +x + 3 + 3 + 11 = 59
=> 3x = 59 - 17
=> 3 x = 42
=> x = 42/3
=> x = 14
Shortest side = x = 14
medium side = x + 3 = 14+3 = 17
longest side = x + 3 +11 = 14 + 3 + 11 = 28
4 0
3 years ago
2. CAN SOMEONE PLEASE HELP ME? I'M NOT GOOD IN MATH.<br>Explain your work​
Elodia [21]

Answer:

D

Step-by-step explanation:

Since triangles ABC and CDB are similar, CD and CB is the same as the ratio between CB and CA. 15:9=x:15. x=25. Subtracting CD to just be left with AD, we get 25-9=16, or answer choice D. Hope this helps!

6 0
3 years ago
What is m Any answers?
Likurg_2 [28]

Answer:

B. 68°

Step-by-step explanation:

Since, opposite sides of the quadrilateral MNPQ are parallel.

Therefore, it is a parallelogram.

Measures of the opposite angles of a parallelogram are equal.

So,

(6x - 2)° = (4x + 36)°

6x - 2 = 4x + 36

6x - 4x = 36 + 2

2x = 38

x = 38/2

x = 19

m\angle M = (6x - 2)\degree  \\  \\ m\angle M = (6 \times 19- 2)\degree  \\  \\ m\angle M = (114- 2)\degree  \\  \\  m\angle M =112\degree  \\  \\ \because m\angle M + m\angle N = 180\degree  \\ (adjacent \: angles) \\  \\ \therefore m\angle N = 180\degree   - m\angle M \\  \\ \therefore m\angle N = 180\degree   - 112 \degree \\  \\ \therefore m \angle N = 68\degree

8 0
2 years ago
a map has a scale of 2 in : 6 mi if clayton and centerville are 10 in apart on the map then how far apart are the real cities
Ahat [919]
I"m pretty sure they would be 60 mi apart
5 0
2 years ago
PLEASE help! Functions problem!
bezimeni [28]

Answer:

C

Step-by-step explanation:

x = -1 and -7

6 0
3 years ago
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