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Nesterboy [21]
3 years ago
11

Answer all questions and show your work:

Mathematics
1 answer:
zhannawk [14.2K]3 years ago
7 0
 what grade are
 you in
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Multiply: (3x)(x4 + 5)
Lelu [443]

Answer:

12x² + 15x

Step-by-step explanation:

(3x × 4x) + ( 3x × 15)

3 0
3 years ago
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Susan needs to buy apples and oranges to make fruit salad. She needs 15 fruits in all. Apples cost $3 per piece, and oranges cos
rusak2 [61]

Answer:

Step-by-step explanation:

$3x6=18 the six represents the apples and the 3 is the cost of each apple, 18 is the cost.

$2x9=$18 the nine is the oranges and the two is the money spent on each one. The total would be $36 in total for all the fruit.

So (9x2)+(3x6)=$36

4 0
3 years ago
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PLEASE HELP ME NOW!!!!!!!!!!
creativ13 [48]
First blank: Rational
Second blank: 2/9
Third blank: 22/100 = 11/50
Fourth blank: irrantional
Fifth blank: no fraction equivalent
Sixth blank: perfect square
Seventh blank: non-perfect square
4 0
2 years ago
The distribution of the number of hours people spend at work per day is unimodal and symmetric with a mean of 8 hours and a stan
Wewaii [24]

Answer: 95% of all people work between 7 hours and 9 hours per day and It is true.

Step-by-step explanation:

Since we have given that

Mean = 8 hours

Standard deviation = 0.5 hours

According to Empirical Rule,

at 95% confidence, it lies within 2 standard deviations  from the mean

so, lower value is given by

mean-2\times sd\\\\=8-2\times 0.5\\\\\=8-1\\\\=7\ hours

upper value is given by

mean+2\times s.d\\\\=8+2\times 0.5\\\\=8+1\\\\=9\ hours

Hence, 95% of all people work between 7 hours and 9 hours per day.

Therefore , it is true.

4 0
3 years ago
Solve the system of linear equations by graphing.
Katyanochek1 [597]
The answer is a) x=-4.5, y=-4.25
6 0
3 years ago
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