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asambeis [7]
3 years ago
13

Please help me :) i would appreciate it a lot

Mathematics
1 answer:
Kobotan [32]3 years ago
3 0

Answer:

4

Step-by-step explanation:

1.5 -(-2.5)

Change -(- into addition

1.5 + 2.5 = 4

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A test that is valid must have scores that fit a normal curve A be reliable B be normed on a random sample C predict future beha
sasho [114]

Answer:

A: be reliable

Step-by-step explanation:

4 0
3 years ago
What is the fully factored form of the expression 16x^2 - 49y^2
podryga [215]

Answer:

(4x + 7y)(4x - 7y)

Step-by-step explanation:

Rewrite 16 as 4^2

= 4^2x^2 - 49y^2

Rewrite 49 as 7^2

= 4^2x^2 - 7^2y^2

Apply the Exponent Rule Pt 1  ((a^m*b^m =(ab)^m))

= (4x)^2 - 7^2y^2

Apply the Exponent Rule Pt 2

= (4x)^2 - (7y)^2

Apply Difference of Squares Formula (( x^2-y^2 = (x + y)(x - y)

= (4x + 7y) (4x - 7y)

6 0
3 years ago
What is the answer for -2(x-7) + 10x=34
Lelu [443]

Answer:

Step-by-step explanation:

-2x-14+10x=34

8x-14=34

8x=48

x=6

6 0
3 years ago
A gym owner has some yellow weights and some red weights. The yellow weights are 6 kilograms each, and the red weights are 8 kil
gogolik [260]

Answer:

The store owner has two of each color weights

Step-by-step explanation:

6 0
2 years ago
Mrs. Myles gave the same test to both her first and third period class. In first period, the median was 75 and the range was 30.
Diano4ka-milaya [45]
The range is the difference between the biggest and smaller values of a set. The median is the middle value of a set. So we cannot say were the lowest score was found, comparing the median and ranges, because it could be that some repeated value very low or high is biasing the median, we could do it with the mean perhaps. So the proposal is false.

3 0
3 years ago
Read 2 more answers
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