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STALIN [3.7K]
3 years ago
15

Help quickkkkkk- I’m terrible at dis stuff

Mathematics
1 answer:
solong [7]3 years ago
3 0

Answer:

Step-by-step explanation:

(x-3)² - 7 = (5-3)²-7

         = 2²-7

          = 4 - 7

          =  -3

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Two friends are playing with water balloons. They each start at the bucket of balloons and walk in opposite directions before to
oksian1 [2.3K]

Answer:

B

Step-by-step explanation:

because is joy walked 14 steps and her friend walks 5 steps the answer is 19 steps 14+5=19

6 0
10 months ago
Figure out the answer to each riddle below:
Ahat [919]
1. 79
2. 330
3. 452
4. 1212
5. 351
6. 202
7. 238
5 0
2 years ago
The following information is obtained from two independent samples selected from two normally distributed populations.
AysviL [449]

A. The point estimate of μ1 − μ2 is calculated using the value of x1 - x2, therefore:

μ1 − μ2 = x1 – x2 = 7.82 – 5.99

μ1 − μ2 = 1.83

 

B. The formula for confidence interval is given as:

Confidence interval = (x1 –x2) ± z σ

where z is a value taken from the standard distribution tables at 99% confidence interval, z = 2.58

and σ is calculated using the formula:

σ = sqrt [(σ1^2 / n1) + (σ2^2 / n2)]

σ = sqrt [(2.35^2 / 18) + (3.17^2 / 15)]

σ = 0.988297

 

Going back to the confidence interval:

Confidence interval = 1.83 ± (2.58) (0.988297)

Confidence interval = 1.83 ± 2.55

Confidence interval = -0.72, 4.38

3 0
3 years ago
for a recipe Peter uses 2 cups of sugar for every 3 cups of flour which table shows equivalent ratios for this table
Novosadov [1.4K]

Answer:  

4 to 6  


Step-by-step explanation:

if you do 2 times 2 which is 4 then you do 3 times which is 6 then you get your answer

4 0
3 years ago
Someone help me with these questions pls-
Andrews [41]

When finding the reciprocal, it is basicaly flipping the numerator and denominator of the number. For instance, the reciporcal of 2 is 1/2, because the denominator of 2 would be 1. For an example more straight forward, the reciporacle of 3/5 is 5/3. This applied to the question goes as followed.

1. 3/5 is 5/3

2. 1/4 is 4

3. 1 is 1

Similarly when dividing fractions or an integer to a fraction, the fraction that is dividing the number turns into the reciprocal then you would multiply.

4.   3/(3/4) is 3*4/3= 4

5.   5/(3/4) is 5*(4/3)= 20/3

6.   8/(4/7) is 8*(7/3)= 56/3

7. 6/(3/5) is 6*(5/3)= 10

8. 2/(5/8) is 2*(8/5)= 16/5

9. 4/(8/9) is 4*(9/8)= 9/2

8 0
2 years ago
Read 2 more answers
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