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Fittoniya [83]
3 years ago
7

Evaluate each expression below.1. 7-2(x-4) when x=5​

Mathematics
2 answers:
Llana [10]3 years ago
8 0

Answer:

<h2>5</h2>

Step-by-step explanation:

7-2(x-4)\qquad\text{put}\ x=5\ \text{to the given expression}\\\\7-2(5-4)\qquad\text{use PEMDAS - Parentheses first}\\\\=7-2(1)\qquad\text{Next Multiplication}\\\\=7-2\qquad\text{Next Subtraction}\\\\=5

solniwko [45]3 years ago
5 0

Answer:

5

Step-by-step explanation:

7−2×(5−4)

7−2×1

7−2

5

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Find the first, fourth, and eighth terms of the sequence. a(n)=-2 x 2^n-1
leonid [27]

Answer:

2, 16 and 256.

Step-by-step explanation:

Just substitute  for n:-

first term ( when n = 1) =  2 * 2^(1-1)

= 2 * 1 =  2

4th term =  2 * 2^(4-1) =  16

8th term = 2* 2^(8-1) = 256

8 0
3 years ago
Find the<br>simple interest:<br>Princpd $6000<br>Interest Rate 5%<br>Time: 6 months<br>Start​
sattari [20]

Answer: The interest is: $150.00

The formula we'll use for this is the simple interest formula, or:

Where:

   P is the principal amount, $6000.00.

   r is the interest rate, 5% per year, or in decimal form, 5/100=0.05.

   t is the time involved, 6....month(s) time periods.

   Since your interest rate is "per year" and you gave your time interval in "month(s)" we need to convert your time interval into "year" as well.

       Do this by dividing your time, 6- month(s), by 12, since there's 12 months in 1 year.

   So, t is 0.5....year time periods.

To find the simple interest, we multiply 6000 × 0.05 × 0.5 to get that:

The interest is: $150.00

8 0
3 years ago
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WARRIOR [948]

Answer:

If is positive, then the parabola opens upward, so the function decreases on and increases on . But if is negative, then just the reverse

7 0
2 years ago
Round 3:38 to the nearest ten
aev [14]

Answer:3

Step-by-step explanation:

Round 3.38 to the nearest ten

Rounding up to the nearest 10, we look at the digits on the left hand side of the decimal point. If the number on the right of the decimal point is less than 5, we ignore it.if it is greater than 5, we add one to the last digit on the right hand side.

In this case, the first digit on the left hand side is less than 5, so we ignore it. Rounding up to the nearest ten,the 0.38 is ignored.

Therefore, it becomes 3.0 = 3

To the nearest ten

7 0
3 years ago
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Maurinko [17]
1. 9 is the mode
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4. mean > median
5. 28 is the range
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3 years ago
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