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Tanzania [10]
3 years ago
8

A teacher is assessing the correlation between the number of hours spent studying and the average score on a science test.

Mathematics
2 answers:
tankabanditka [31]3 years ago
4 0
Yes there is a correlation
Colt1911 [192]3 years ago
3 0

yes there is a a correlation

f(x) = 4x + 60

slope = 4

y-intercept = 60

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pablo will rent a car for the weekend. he can choose one of two plans. the first plan has an initial fee of $55.96 with addition
kow [346]

Answer:

200 miles

Step-by-step explanation:

First, set up the equations.

plan 1: initial fee of $55.96, $0.12 per mile

  • y = 0.12x + 55.96

plan 2: initial fee of $63.96, $0.08 per mile

  • y = 0.08x + 63.96

We want to know at what distance will the cost be the same. So, set the equations equal to each other.

0.12x + 55.96 = 0.08x + 63.96

Combine the variables.

0.04x + 55.96 = 63.96

Combine the constants.

0.04x = 8

Divide by 0.04 to isolate x.

x = 200 miles

Check by plugging x back into each equation.

y = 0.12(200) + 55.96

y = 24 + 55.96

y = $79.96

y = 0.08(200) + 63.96

y = 16 + 63.96

y = $79.96

You are correct!

8 0
3 years ago
Which expression is equivalent to 4÷147
mote1985 [20]

Answer:

what are the choices???

Step-by-step explanation:

7 0
3 years ago
Combine these radicals.A rectangle has an area of (x2 − 17x + 72) square units. Since the area of a rectangle is determined usin
Ilya [14]
X2 - 17x + 72

=(x - 9)(x - 8)

if x = 20  the length of the rectangle is 12 units and width 11 units.
6 0
3 years ago
Read 2 more answers
Arrange the expressions below in order from least to greatest. Place the least at the top and greatest at the bottom. ( 72 ÷ 8 )
geniusboy [140]

Answer:

Step-by-step explanation:

2 × 3 + 1 72 ÷ ( 8 − 2 ) × 3 + 1 72 ÷ ( 8 − 2 ) × ( 3 + 1 ) 72 ÷ 8 − 2 × ( 3 + 1 )

8 0
3 years ago
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Saul is choosing a frame for his artwork. There are 5 wooden frames, 3 metal frames, and 8 plastic frames available.
Leni [432]
Hello!
.
The answer to your question is 16 ways.
.
n = 5 + 3 + 8 = 16
r = 1
.
nPr = n! / (n-r)!
16P1 = 16! / (16-1)!
16P1 = 16x15! / 15!
16P1 = 16
:)
6 0
3 years ago
Read 2 more answers
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