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prisoha [69]
3 years ago
6

I’m struggling with problems 4 thru 7 and thought someone could help me

Mathematics
1 answer:
antiseptic1488 [7]3 years ago
6 0

Answer:

42+t

q×10 or Q(10)

x+4

1/2y

Step-by-step explanation:

there are 42 members and their combined total would be the answer

Q is the number of members now, 10 is what you need to times it by in order to get the original number of members

the sister is 4 years younger than her brother, therfor he must be 4+ older than her

half of Y would be 1/2Y

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Step-by-step explanation:

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3 years ago
Complete the square- 6x^2+7x-5
kirill [66]
6x^2+7x-5 = (2x-1)(3x+5)
8 0
3 years ago
In the figure to the right, can you conclude that triangle GHI is congruent to triangle KJI? Justify your reasoning.
inessss [21]

Answer:

No

Step-by-step explanation:

You cannot conclude that ΔGHI is congruent to ΔKJI, because although you can see/interpret that there all the angles are congruent with one another, like with vertical angles (∠GIH and ∠KIJ) and alternate interior angles (∠H and ∠J, ∠G and ∠K), we don't know the side lengths.

All the angles could be congruent, but the sides might be different. For example, ΔGHI might be a bigger triangle than ΔKJI, which could make them similar to one another, but not congruent.

For something to be congruent to another, everything must be exactly the same.

7 0
3 years ago
On a unit test in a statistics class, the teacher determines that the mean test grade was 77.5 with a standard deviation of 5.2.
katovenus [111]

Answer: B. This student's test grade was 2.4 standard deviations above the mean test grade.

====================================================

Explanation:

The z score tells us how far away the raw score is from the mean. This distance is in terms of standard deviations.

  • z = 1 means we're 1 standard deviation above the mean
  • z = 2 means we're 2 standard deviations above the mean

and so on.

Negative z scores indicate the raw score is below the mean.

  • z = -1 means we're 1 standard deviation below the mean
  • z = -2 means we're 2 standard deviations below the mean

and so on. So that's why z = 2.4 indicates the students test grade was 2.4 standard deviations above the mean.

5 0
3 years ago
The sum of two consecutive integers is 125. What is the largest of the two numbers?
ValentinkaMS [17]
Let us assume the small integer to be = x
Then
The second consecutive greater integer = x + 1
The sum of two consecutive integers is already given in the question and it is 125. based on this given information, the answer to the question can be easily reached.
So
x + x+ 1 = 125
2x + 1 = 125
2x = 125 - 1
2x = 124
x = 124/2
   = 62
Then
The largest of the two integers = x + 1
                                                  = 62 + 1
                                                  = 63
So 63 is the largest integer among the two consecutive integers. I hope the procedure is not very tough for you to understand.
5 0
4 years ago
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