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Oksanka [162]
3 years ago
13

5x + 3y, when x = 4, and y=-3​

Mathematics
2 answers:
Pepsi [2]3 years ago
6 0

Answer:

5x+3y, when x=4 and y= -3

5(4)+3(-3)=

20+ (-9)=

11

Step-by-step explanation:

Hope this helps. :)

Montano1993 [528]3 years ago
3 0

Answer:

5x + 3y = 11

Step-by-step explanation:

x = 4 y = -3

=5x + 3y

=5(4) +3(-3)

=20 + (-9)

=11

When a number and variable are right beside each other it means that the number and the variable are being multiplied together, for example 5x. If x = 4 then it means that 5 and 4 are being multiplied.

(it might be wrong because I haven't done algebra in a long time)

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Which of the following is a polynomial? I NEED HELP ASAP*******
nadezda [96]

Answer:

7x⁷+2x⁻⁴+3 is a Polynomial

Step-by-step explanation:

I'm sorry I can't explain how I got the answer by hand. I graphed the Equation.

5 0
3 years ago
The size of the tank a fish collector needs depends on how many fish he has. Which in the independent variable
Semenov [28]

Answer:

Step-by-step explanation:

"<u><em>The size of the tank</em></u> a fish collector needs <u><em>depends</em></u> on <em>how many fish he has</em>."

Dependent variable is the size of the tank.

<em>Independent variable</em> is how many fish a fish collector has.

3 0
3 years ago
In a random sample of 8 ​people, the mean commute time to work was 33.5 minutes and the standard deviation was 7.2 minutes. A 95
Elina [12.6K]

Answer: Margin of error = 6.58

Confidence interval =  (26.91, 40.08)

Step-by-step explanation:

Since we have given that

Sample size n = 8

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At 95% confidence interval,

α = 0.05

t = 1.96

So, Margin of error is given by

t\times \dfrac{\sigma}{\sqrt{n}}\\\\=1.96\times \dfrac{9.5}{\sqrt{8}}\\\\=6.58

Confidence interval would be

Lower limit:

\bar{x}-6.58\\\\=33.5-6.58\\\\=26.91

Upper limit:

\bar{x}+6.58\\\\=33.5+6.58\\\\=40.08

Hence, the interval would be (26.91, 40.08)

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Confidence interval using the standard normal distribution is wider than the confidence interval using t distribution.

3 0
3 years ago
How would I translate this algebraic expression?
FromTheMoon [43]

Answer: \frac{5}{7} (2+\frac{6}{r} )

Step-by-step explanation:

Since, the quotient of 6 and r = \frac{6}{r}

The sum of two and the quotient of 6 and r

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And,  Five-sevenths of the sum of two and the quotient of 6 and r

= \frac{5}{7} (2+\frac{6}{r} )

Thus, the required expression is, \frac{5}{7} (2+\frac{6}{r} )


3 0
3 years ago
If Mary divides one third of a pound of coconut equally between 8 desserts, how much goes into each dessert?
GarryVolchara [31]

Answer:

2/3 ounces

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one pound is 16 ounces

1/3 of 16 ounces is 16/3

(16/3) ÷ 8 = (16/3) * (1/8) = 2/3

8 0
2 years ago
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