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KATRIN_1 [288]
3 years ago
7

Solving multi-step equations 2(x + 7) – 34 = 4x – 11x + 4(x - 1)

Mathematics
2 answers:
exis [7]3 years ago
7 0

Answer:

x=16/5 or 3.2 or 3 1/5

Step-by-step explanation:

2(x + 7) – 34 = 4x – 11x + 4(x - 1)

2x+14-34=4x-11x+4x-4

2x-20=-3x-4

+3x     +3x

5x-20=-4

  +20  +20

5x=16

/5   /5

x=16/5 or 3.2 or 3 1/5

Zarrin [17]3 years ago
6 0

Answer:

x = 16/5

Step-by-step explanation:

2x + 14 -34 = 4x - 11x + 4x - 4

2x - 20 = -3x - 4

5x = 16

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Juan wrapped 2 presents every 16 hours. At that rate, how long, in
maks197457 [2]

Answer:

Since it took Juan 16 hours to wrap 2 presents, it will take Juan 32 hours.

1 present- 8 hours

2 present- 16 hours

3 present- 24 hours

4 present- 32 hours

5 0
1 year ago
Read 2 more answers
Listed below are the summary statistics from samples of strontium-90 in baby teeth obtained from twelve Pennsylvania residents a
qaws [65]

Answer:

9.72

Step-by-step explanation:

s1 = 10.6383 ; s2 = 5.21289

x1 = 147.583 ; x2 = 136.417

n1 = 12 ; n2 = 12

df1 = n1 - 1 = 12 - 1 = 11

df2 = n2 - 1 = 12 - 1 = 11

The test statistic :

(x1 - x2) / sqrt[(sp²/n1 + sp²/n2)]

Pooled variance = Sp² = (df1*s1² + df2*s2²) ÷ (n1 + n2 - 2)

Sp² = ((11*10.6383) + (11*5.21289)) / 22 = 7.926

Test statistic, T* :

(147.583 - 136.417) / √(7.926 * (1/12 + 1/12))

11.166 / √(7.926 * (1/6)

11.166 / √1.321

11.166 / 1.1493476

T* = 9.7150766

Test statistic = 9.72

5 0
3 years ago
What value, written as a decimal, should Lena use as the common ratio?
inn [45]

Answer:

an=1*2.5^(n-1)

=2.5^(n-1)

Step-by-step explanation:

Complete question below:

What value, written as a decimal, should Lena use as the common ratio? Lena is asked to write an explicit formula for the graphed geometric sequence. On a coordinate plane, 3 points are plotted. The points are (1, 1), (2, 2.5), (3, 6.25).

Solution

Point (1, 1), (2, 2.5), (3, 6.25).

a=1

ar=2.5

ar^2=6.25

From ar and ar^2

r=6.25/2.5

=2.5

r=2.5

an=ar^(n-1)

Therefore, the explicit formula is

an=1*2.5^(n-1)

=2.5^(n-1)

7 0
3 years ago
V is themidpoint of UW. If UV = x + 8 and VW = 9x, what is VW?
user100 [1]

Answer:

x=1

Step-by-step explanation:

If V is the midpoint of the line UW, that would mean that there's an equal distance between UV and 9x. So, the value of UV and VW would eed to be the same.

x+8=9x

8=8x

x=1

8 0
2 years ago
How to solve the equation for y
Andreyy89

Answer:

What equation? Please include the equation

4 0
3 years ago
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