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krek1111 [17]
2 years ago
6

Solve: 9x+y=2 -4x-y=-17

Mathematics
1 answer:
beks73 [17]2 years ago
6 0

Answer:

2

−

9

x

Step-by-step explanation:

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A local little league has a total of 75 ​players, of whom 20​% are right​-handed. How many
solmaris [256]

Answer:

15

Step-by-step explanation:

6 0
3 years ago
Trophies for Gunther's soccer team will cost $6.25 each, plus 15 cents for every word on the engraving. Which equation could be
Lynna [10]

Answer:

Step-by-step explanation:

c = $6.25 + 0.15w

$6.25 represents the fixed cost. it is the cost that does not vary with the number of words

15 cents is the variable cost. it is the cost that varies with the number of words.

to write the equation convert 15 cents to dollars by dividing by 100.

6 0
2 years ago
Psychologists in Montreal and Toronto conducted a study to determine if babies show any preference for speech over general noise
Lostsunrise [7]

Answer:

H0 : μ1 - μ2 = 0

H1: : μ1 - μ2 ≠ 0

we reject the Null and we conclude that babies prefer actual speaking to humming.

Step-by-step explanation:

H0 : μ1 - μ2 = 0

H1: : μ1 - μ2 ≠ 0

Mean difference, d = 27.79

Standard deviation of difference, Sd = 63.18

Sample size, n = 50

The test statistic :

d / (Sd / √n)

Test statistic :

27.79 / (63.18 / √50)

27.79 / 8.9350012

= 3.11

Using the Test statistic score, we can obtain the Pvalue

Using the standard normal table ;

Pvalue = P(x<-Z or x>Z) = 0.0018709

Pvalue is very low

Pvalue < α ; Hence, we reject the Null and we conclude that babies prefer actual speaking to humming.

8 0
3 years ago
Can someone please help me
lesantik [10]
The third option
Because when you’re finding the slope of a line you rise/run. Defined the B of a slope intercept equation you find where the line is intersecting the Y axis
6 0
3 years ago
Read 2 more answers
1.06(x-3x) solve it.
SashulF [63]
1.06(x-3x)
1.06x-3.18x
-2.12x
Hope this helps!
5 0
3 years ago
Read 2 more answers
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