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galben [10]
3 years ago
9

Diego scored nine points less than Andre in the basketball team Noah scored twice as many points as Diego if Noah scored 10 poin

ts how many ponts did Andre score​
Mathematics
2 answers:
mash [69]3 years ago
7 0

Answer:

1..........................

MrMuchimi3 years ago
5 0

Answer:

Andre scored 14 points.

Step-by-step explanation:

set up expressions with the info given:

Diego's points: a –9

Andre's points: 2d. and

n = 2d

Noah's points = 10

Use the expressions to set up equations to solve.

To find a, Andre's points, we can work backwards.

Substitute the 10 from the last expression for n in the equation n=2d, and solve for d:

10 = 2d. Divide both sides by 2

5 = d

Substitute the value of d, Diego's points, to make an equation using the first expression:

5 = a –9 Add 9 to both sides.

5 + 9 = a a = 14

Andre scored 14 points

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In 2009, the American Time Use Survey found that the average American spends 2.8 hours a day watching TV. Suppose the standard d
Anit [1.1K]

Answer:

4.72 hours/day

Step-by-step explanation:

Mean time spent watching TV (μ) = 2.8 hours a day  

Standard deviation (σ) = 1.5 hours a day

The 90th percentile (upper 10%) of a normal distribution has an equivalent z-score of roughly z = 1.282. The minimum time spent watching TV, X, at the 90th percentile is:

z=\frac{X-\mu}{\sigma} \\1.282=\frac{X-2.8}{1.5}\\ X=4.72\ hours/day  

On a typical day, you must watch at least 4.72 hours of TV to be in the upper 10%.

8 0
3 years ago
What is the length of the hypotenuse, c? Round your answer to the nearest hundredth.
Afina-wow [57]

Answer:

Step-by-step explanation:

By using the Pythagorean theorem:

b^2+3^2=5^2
b^2+9=25

b=sqrt (25-9)

b=sqrt(16)

b=4

=> 4^2+7^2=c^2
16+49=c^2
65=c^2
=>c=sqrt(65)

c = (approximately) 8

5 0
2 years ago
one number is three more than four time another if the sum of the two number is 23 then find both numbers
zloy xaker [14]
<h3><u>The value of x is 19.</u></h3><h3><u>The value of y is 4.</u></h3>

x = 3 + 4y

x + y = 23

Because we have a value for x we can plug it directly into the second equation.

3 + 4y + y = 23

Subtract 3 from both sides.

4y + y = 20

Combine like terms.

5y = 20

Divide both sides by 5.

y = 4

Plug this value for x back into the original equation.

x = 3 + 4(4)

x = 3 + 16

x = 19


8 0
3 years ago
The elves and reindeer are getting ready for a meeting with Santa.
Feliz [49]

Let e and r be the number of elves and reindeers, respectively.

We know that:

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4r+2e = 38(each reindeer has 4 legs and each elf has two)

If we multiply the first equation by 2 we have 2r+2e=28, and if we subtract this equation from the second we have 2r=10 which implies r=5.

So, there are 5 reindeers and 9 elves (remember that they have to sum up to 14).

3 0
3 years ago
Simplify −4(−y v)-4(5v−y)
Semmy [17]
Expand the brackets. two negatives multiplied together make a positive and a positive and a negative multiplies together make a negative. so you would times everything in the first bracket by -4 and everything in the second bracket by -4 also because it also has a -4 outside the bracket:
 4y-4v-20v+4y
5 0
3 years ago
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