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Zanzabum
3 years ago
13

Write a story problem for the addition sentence 7 +__=9.solve the story problem.

Mathematics
2 answers:
leva [86]3 years ago
6 0
Katelan has 9 friends as guests for a costume party. Katelan is elaborating carnival masks for them. So far , she has made 7 masks. How much more masks is Katelan left to do?

Answer: Katelan has 2 masks left to do . Because 7 (plus) 2 is 9.
Lerok [7]3 years ago
4 0
You can do subtraction 9-7=2. Riley made 9 cookies hannah ate some they have 7 left how many more does she need to get back to how many she had before
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On a field trip when their bus breaks down 40 miles from the school. A teacher takes 5 of them back to school in her car, travel
IceJOKER [234]
I think it would be 8 miles: it would have been 2 hours, so 4 * 2 is 8 miles.
:) Hope this helps!
3 0
3 years ago
A random sample has been selected from a population. The point estimate = 78.65 and margin of error E = 8.24 for a 90% confidenc
fiasKO [112]

Answer:

90% confidence interval: (70.41,86.89)

Step-by-step explanation:

We are given the following in the question:

Point estimate = 78.65

Margin of error, E = 8.24

Confidence level = 90%

Significance level = 10%

Formula:

\text{Point estimate} \pm \text{Margin of error}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.10} = \pm 1.64

78.65 \pm 8.24 = (70.41,86.89)

(70.41,86.89) is the required 90% confidence interval.

5 0
3 years ago
WILL GIVE BRAINLIEST!!! IF ANSWRED CORRECTLY!! A computer is used to pick three letters, one after the other, from {A.B}. Each l
Kaylis [27]
The correct answer is 0.125.  Each outcome is out of 8 possible outcomes.   1/8 = 0.125 . Therefore, 0.125 is your answer.
4 0
3 years ago
Read 2 more answers
If the maximum value of y =-x²+ax+b is 8 when x = 3, find the values of a and b​
LuckyWell [14K]
Y' = -2x+a
0 = -2(3)+a
6=a

8=-(3)^2 +(3)(6)+b
b=-1
8 0
3 years ago
Square root of 3 what is it
slavikrds [6]
Square root of 3 is 1.732
6 0
3 years ago
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