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Svetach [21]
3 years ago
15

What does x equal if 8x - 4 equals 4x plus 1

Mathematics
2 answers:
postnew [5]3 years ago
8 0

4x=5 Answer: so 5/4

Step-by-step explanation: 8x-4 = 4x + 1

add like terms so 4x=5 then divide

Sergio039 [100]3 years ago
5 0

Answer:

x=\frac{5}{4}

Step-by-step explanation:

8x-4=4x+1

Add 4 to both sides

8x=4x+5

Subtract 4x from both sides

4x=5

Divide both sides by 4

x=\frac{5}{4}

Hope this helps!

(Please mark brainliest)

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The square of a number is 15 more than 2 times the number
UkoKoshka [18]

x^2 = 2x + 15

x^2 -2x - 15 = 0

Factor:

(x-5)(x+3) = 0

x = 5 or x = -3

3 0
3 years ago
What’s the correct answer for this?
slava [35]

Answer:

1/4

Step-by-step explanation:

Let's denote the probabilities as following:

Probability that a teenager has a sister:

P(A) = 12/28

Probability that a teenager has a brother:

P(B) = 7/28

Probability that a teenager has both a sister and a brother:

P(A⋂B) = 3/28

Probability that a selected teenager has a sister also has a brother, or in other words, he/she has a brother, given he/she had a sister:

P(B|A)

Let's apply the formula of conditional probability to work out P(B|A)

P(B|A) = P(A⋂B)/P(A) = (3/28)/(12/28) = (3*28)/(12*28) = 3/12 = 1/4

=> Option C is correct

Hope this helps!

7 0
3 years ago
Write the logarithmic equation in exponential form. log2 16 = 4
olganol [36]

A logarithm is an exponent. The base of the logarithm is what it is an exponent of. The argument of the logarithm function is the value that you get when you raise the base to the power indicated by the exponent.

Here, the logarithm is 4, so that is the exponent of the base, which is 2. The argument of the log function is 16, so that is the result of raising 2 to the power of 4.

In exponential form, the given expression is equivalent to

 2⁴ = 16

8 0
3 years ago
C = 172.7 cm
Anika [276]
I am hoping that the a in c = ad is supposed to be x.

The formula for circumference is c = pi * diameter with 3.14 substituting for pi.

Let’s plug in some values

172.7 = 3.14d

Divide

55 = d

The diameter should be 55 cm.
4 0
2 years ago
Read 2 more answers
Michael loves to run. It takes him 25.3 minutes to complete a 10 mile run. At this rate, how long would it take him to run 16 mi
m_a_m_a [10]

Answer:

0.632

Step-by-step explanation:

divide 16 ÷ 25.3 rurhrhr rhrhrhdh dhejejej ejehejeje behe

6 0
2 years ago
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