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sveta [45]
3 years ago
12

What is the solution to 4(2x - 1) = 20? Enter your answer in the box. X=

Mathematics
2 answers:
Rina8888 [55]3 years ago
3 0

Answer:

x=3

Step-by-step explanation:

4(2x - 1) = 20

Divide each side by 4

4/4(2x - 1) = 20/4

2x-1 = 5

Add 1 to each side

2x-1 +1 = 5+1

2x= 6

Divide by 2

2x/2 = 6/2

x = 3

amm18123 years ago
3 0

Answer:

x=3

Step-by-step explanation:

Use the distributive property to expand the left side:

a(b-c)\\\\ab-ac

Simplify:

4(2x-1)=20\\\\4(2x)-4(1)=20\\\\8x-4=20

Isolate the variable, x. Add 4 to both sides of the equation:

8x-4+4=20+4\\\\8x=24

Now divide both sides by 8:

\frac{8x}{8} =\frac{24}{8}\\\\ x=3

The value of x is 3.

:Done

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A physician's order states that 10 grains of medication are to be given; the tablets contain 2.5 grains each. How many tablets s
Akimi4 [234]
4 because 2.5+2.5=5 and another 2.5+2.5=5 
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3 years ago
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To play a game, you spin a spinner like the one shown. You win if the arrow lands in one of the areas marked "WIN". Lee played t
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The data collected from the actual game experiment is:

Win: 8 times
Lose: 40 times
Total trials: 48 times

Therefore, the probability that you will win when you play this game is:

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Can someone please help me with one or both of these problems, I'm so confused but the assignment is due soon!!
Firlakuza [10]

Answer:

First question: 1270

Second question: 4080

Step-by-step explanation:

Here is the Sum formula:

S_{n}=\frac{n}{2}(a_{1}+a_{n})

where n represents the number of terms, and

a_{1} is the first term, and a_{n} is the last term.

Let's look at the first question:

k is the first number of the sequence, 5, and 20 is the last number of the sequence.

You can find the first term (a_{1}) by substituting k in the formula for 5.

3(5)+26=15+26=41

You can find the last term (a_{n}) by substituting k for 20 into the formula.

3(20)+26=60+26=86

now, knowing there are 20 terms in total, a_{1} =41, and a_{n} =86, we can put it into the Sum formula.

S_{20}= \frac{20}{2} (41+86)

S_{20}= \frac{20}{2} (127)

S_{20}= 10 (127)

S_{20}= 1270

Answer to the first question: 1270

Next question:

Even though the given formula uses n as the variable, this problem works the same way as the previous one.

Substitute n in the formula for k, which is 5 to find the first term: 14(5)+29=99

Substitute 20 for n to find the second term: 14(20)+29=309

Now assemble the Sum formula:

S_{20}= \frac{20}{2} (99+309)

S_{20}= \frac{20}{2} (408)

S_{20}= 10(408)

S_{20}=4080

Answer to the second question: 4080

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3 years ago
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Answer:

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Step-by-step explanation:

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