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lord [1]
3 years ago
10

X(2) - 8x - 9 /5x(2) - 45x simplfy

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
7 0
X*2-8x-9/5*2-45x

2x-8x-18/5-45x

-51x-18/5

y=x*2-8x-9/5*2-45x
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Solve b to the second power=77​
zubka84 [21]

Answer:

\large\boxed{b=\pm\sqrt{77}}

Step-by-step explanation:

b^2=77\iff b=\pm\sqrt{77}\\\\\text{because}\\\\(-\sqrt{77})^2=77\ \text{and} \ (\sqrt{77})^2=77

3 0
3 years ago
This graph shows a proportional relationship.<br> What is the constant of proportionality?
Vlad1618 [11]

Answer:

3/4

Step-by-step explanation:

there is no y intercept but it is 3/4 when you simplify

4 0
2 years ago
Labor economists have extensively researched the determinants of earnings. Invest-ment in human capital, measured in years of ed
never [62]

Answer:

Kindly check explanation for other solutions

Years, Inning and saves are statistically significant ; ERA is not.

Step-by-step explanation:

Earning for staying one additional year :

Multiply slope value of years * 1 = 0.052 * 1 * 100 % = 5.2% (earning increases by 5.2%)

Relives with 10 more saves :

10 * 0.0032 * 100% = 3.2% (earning increases by 3.2%)

Having 100 more innings :

100 * 0.00089 * 100% = 8.9%

If ERA is reduced by 1.5 ; earning will increase by (0.0085*100)% * 1.5 = 1.275%

B.) At 5% level of confidence :

α = 1.64

Years = 0.052/0.026=2

Inning = 0.00089/0.00020 = 4.45

Saves = 0.0032/0.0018 = 1.78

ERA = 0.0085/0.0168 = 0.51

Years, Inning and saves are statistically significant as they are greater than α ; As for ERA, it is not statistically significant (0.51 < 1.64)

8 0
3 years ago
In the past month Melissa went to buy video games and 7 DVD the rental price for each video game was $3.10 the rental price for
hammer [34]
Hi! I’m here to help you with your math.

You didn’t specify how much games so let’s go with one, if it’s not 1 I can always change it later!

1 * 3.10 is 3.10 (duh)

7 * 3.70 is 25.90

7
3 7 0
0 0 0 0
— — — — — —
4 9
2 1
— — — — — —
2 5 9 0

Add the decimals in the correct places and you’ll get 25.90.

Now add 25.90 + 3.10 and you shall get your answer, 29!

Melissa spent 29$ for the rentals in the past month.

Thank you and I hope this helped.
4 0
2 years ago
Enter a formula in cell d5 to calculate b5/b4 rounded to 4 decimal places.
KIM [24]
Click in cell D5.
Then use this formula:
=round(B5/B4, 4)

Example:
b4 = 3.2165
b5 = 21.43
In cell d5, type =round(b5/b4) and press Enter.
cell d5 contains 6.6625.


Answer:
=round(b5/b4, 4)

4 0
3 years ago
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