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velikii [3]
3 years ago
14

3(x+4) - (x-1) x=3 y=2

Mathematics
2 answers:
Ksenya-84 [330]3 years ago
7 0

Answer: 19

Step-by-step explanation:

Alexus [3.1K]3 years ago
4 0

answer:

19

Step-by-step explanation:

3•(3+4)-(3-1)

equall

19

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If math students typically earn 24 points out of 35 possible on a test, how many points would be typical if there were 100 possi
Lilit [14]

Answer:

68.6

Step-by-step explanation:

Given the initial ratio of 24 points out of 35 possible points, you can set up a proportion (equivalent ratios) to find the expected number of points math students would ear on a test of 100 possible points:

\frac{earned}{possible}=\frac{24}{35}=\frac{x}{100}

Where 'x' is the number of points earned on the 100 point test.

Cross-multiply: 35x = 24(100) or 35x = 2400

Divide both sides by 35: 35x/35 = 2400/35

Solve for x:  x = 68.6

5 0
3 years ago
What is the factorization of 49b2 − 81?
Ann [662]

Answer:

Step-by-step explanation:

49b² - 81 = (7b)² - 9 ²

by identity : 49b² - 81 = (7b -  9)( 7b + 9)

5 0
2 years ago
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Work out the percentage change to 2 decimal places when a price of £60 is increased to £89.99
givi [52]

Answer:

that is the solution to the question

3 0
3 years ago
What is the answer for m^2-5m-14=0?
tensa zangetsu [6.8K]

Answer: m = 7 or -2

Step-by-step explanation:

Quadratic Formula!  \frac{{-b (+/-)\sqrt{(b^{2}-4ac }}}{2a}

Polynomial Form: ax^{2} +bx+c

So in this example a: 1  b: -5  c: -14

You get:\frac{{-(-5) (+/-)\sqrt{((-5)^{2}-4(1)(-14) }}}{2(1)}

m = 7 or -2

Check by plugging a value back in for m

(7)^{2} -5(7)-14=0?\\(-2)^{2} -5(-2)-14=0?\\

True for both.

3 0
3 years ago
If three times a number plus four is no more than four times the number minus one, which of the
pychu [463]
The number is at least 5
6 0
3 years ago
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