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faltersainse [42]
2 years ago
11

At the beginning of the month, Sheryl had a balance of $120 in her checking account. She then made a purchase for $80, using her

checking account. How much money will Sheryl need to deposit if she wants her account balance to be the same as it was at the beginning of the month?
Mathematics
1 answer:
Rama09 [41]2 years ago
3 0
$80

add what you took out
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Please help (Will make brainliest!!) <br> Solve and explain steps
vlada-n [284]
If angle ec is a bisector then angles Bec and ced are the same making them both 4x+1. we know a line segment equals 180°. so if we take the 11x-12 and add it to 2(4x+1) we end up with 19x-10=180. you add 10 to both sides and get 19x=190 then you divide by both sides. you'll end up with x=10. you plug In the 10 with aeb and aec and add them together to get 139°. if you're looking for the equation, it's 15x-11.
4 0
3 years ago
In triangle ABC, the length of side AB is 13 inches and the length of side BC is 19 inches. Which of the following could be the
damaskus [11]

Answer:

19-13=6 there it is

Step-by-step explanation:

4 0
3 years ago
Which equation could have been used to create this function table? A. y = x + 1 B. y = x + 6 C. y = 5x D. y = 3x
solniwko [45]
A. y = x+1
Hope this helps :)
5 0
3 years ago
Read 2 more answers
One factor in rating a National Hockey League team is the mean weight of its players. A random sample of players from the Detroi
lukranit [14]

Answer:

1) Random: A random sample needs to be obtained in order to apply inference for the mean

2) Normality condition: The sampling distribution of \bar X needs to be approximately normal. If we use a random sample size higher than 30 we can use the Central Limit theorem to verify this condition.

3) Independence: All the individual observations need to be independent. And we need to satisfy that our sample would be lower than 10% of the real population size.

Step-by-step explanation:

For this case we need three conditions:

1) Random: A random sample needs to be obtained in order to apply inference for the mean

2) Normality condition: The sampling distribution of \bar X needs to be approximately normal. If we use a random sample size higher than 30 we can use the Central Limit theorem to verify this condition.

3) Independence: All the individual observations need to be independent. And we need to satisfy that our sample would be lower than 10% of the real population size.

Data given and notation  

\bar X=203 represent the sample mean

s=10.9 represent the sample standard deviation  

n=17 sample size  

\mu_o represent the value that we want to test  

\alpha=0.01 represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We can assume the following system of hypothesis.

Null hypothesis:  \mu = \mu_o  

Alternative hypothesis :\mu\neq \mu_o  

The degrees of freedom on this case:

df=n-1=10-1

Compute the test statistic

The statistic for this case is given by:  

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}} (1)  

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

7 0
3 years ago
Solve by completing the square:<br> x2 + 10x = 75
GuDViN [60]

Answer:

x= -15, 5

Step-by-step explanation:

x²+10x-75=0

x²+15x-5x-75=0

(x+15)(x+5)=0

x= -15 and x=5

6 0
3 years ago
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