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7nadin3 [17]
3 years ago
7

Someone please help :)

Mathematics
1 answer:
larisa86 [58]3 years ago
8 0
The answer is 6m djsjdjjsskskksksksksksksmsmsm
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Evaluate 42 – a² + ab for a = 6 and b = 5.
rodikova [14]
42-(6x6)+(6x5)
42-36+30
6+30
Answer: 36
3 0
2 years ago
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Which of the following situations can be described by the equation 2x – 4 = 10?
chubhunter [2.5K]

Step-by-step explanation:

Add 44 to both sides.

2x=10+4

2x=10+4

2 Simplify 10+410+4 to 1414.

2x=14

2x=14

3 Divide both sides by 22.

x=\frac{14}{2}

x=

2

14

4 Simplify \frac{14}{2}

2

14

to 77.

x=7

x=7

Done

8 0
3 years ago
Write the linear equation that gives the rule for this table.
Zinaida [17]

Answer:

f(x) = -7x + 1

Step-by-step explanation:

Slope intercept form is

y = mx + b

m is slope

b is y-intercept

--------------------------

y decreases by 7 for each increase of 1 in x

slope = -7

to find "b" plug in one of the points and m = -7

using point (3, -20)

y = mx + b

-20 = -7(3) + b

-20 = -21 + b

b = 1

The equation is

f(x) = -7x + 1

3 0
3 years ago
What is 20/25 as a percentage
timurjin [86]
Hey there! 
Let solve this problem step by step :)

1. Convert 20/25 into a decimal. In order to do this, you will need to divide the numerator (the top part of the fraction) with the denominator (the bottom part of the fraction). 

So, \frac{20}{25} as a decimal would be 0.8. (We divide 20 by 25)

2. Now, we take the decimal and multiply it by 100. To make it even simpler, just move the decimal, two places to the right. This makes it the percent. So,

0.8 ----> 80%

The final answer is 80%

Thank you! 
4 0
2 years ago
Read 2 more answers
The perimeter of a rectangular field that measures 2 feet by 18 inches is _________ ft. A. 40 B. 7 C. 84 D. 6
In-s [12.5K]

Answer:

It is the letter A

Step-by-step explanation:

To find the perimeter you need to add all the sides. Since the width of the rectangle is 2 feet, you need to add it to another 2 since they have two equal sides. DO the same with 18 inches which is the length.

4 0
3 years ago
Read 2 more answers
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