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irga5000 [103]
3 years ago
10

Which method can't you use to solve x²+7x=0.

Mathematics
1 answer:
scoray [572]3 years ago
6 0

Answer:

Factoring

Step-by-step explanation:

x^2 + 7x = x(x + 7) = 0

So

x = 0 or x = -7

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Need help with 4, thanks!
Veseljchak [2.6K]

Answer:

x=2

Step-by-step explanation:

In order to solve this problem, you need to find the scale factor. This is done through cross multiplying proportions. In this instance, you have to cross multiply x/4 by 3.5/7. When you multiply x and 7, you get 7x. When you multiply 3.5 and 4, you get 14. Simplify by isolating the variable, and you get 2.

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What is the solution set for the inequality?
Sliva [168]

Answer:

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Which of these is an example of typing at a rate of 42 words per minute?
algol [13]
C. Typing 210 words in 5 minutes.

Explanation:
42 words per minute is equivalent to 210 words in minutes:

Write the 42 wpm and 210 words in 5 mins as a ratio:
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Multiply both sides in the ratio 42 : 1 by 5:
42 x 5 = 210
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Therefore 210 words in 5 mins is an example of the unit rate 42 wom because it is equivalent.

Hope this helps!
-SpaceMarsh
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3 years ago
A researcher records the hospital admission rates for coronary heart disease at 10 local hospitals. She finds that 2 different h
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The central tendency researcher use to describe these data is "mode".

<h3>What is mode?</h3>

The value that appears most frequently in a data set is called the mode. One mode, several modes, or none at all may be present in a set of data. The mean, or average of a set, and the median, or middle value in a set, are two more common measurements of central tendency.

Calculation of mode is done by-

  • The number that appears the most frequently in a piece of data is its mode.
  • Put the numbers in ascending order by least to greatest, then count the occurrences of each number to quickly determine the mode.
  • The most frequent number is the mode.
  • Simply counting how many times each number appears in the data set can help you identify the mode, which is the number that appears the most frequently in the data set.
  • The figure with the largest total is the mode.
  • Example: Since it happens most frequently, the mode for the data set [5, 7, 8, 2, 1, 5, 6, 7, 5] is 5.

To know more about the mode of the data, here

brainly.com/question/27951780

#SPJ4

6 0
1 year ago
If x = y and y=z which statement is true?
dybincka [34]
The x=y
Is this the the test of the question?
3 0
3 years ago
Read 2 more answers
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