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3 years ago

Milly wrote the quadratic equation 0 = –x2 + 4x – 7 in standard form. What is the value of c in her equation?

Mathematics

1 answer:

zysi [14]3 years ago

6 0

Answer:

c = - 7

Step-by-step explanation:

the standard form of a quadratic equation is

ax² + bx + c = 0 : a ≠ 0

x² + 4x - 7 = 0 is in standard form

By comparison of the coefficients of the terms, c = - 7

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The number of wins for a high school football team is measured for the season. When the team plays at home, it is generally beli

arlik [135]

Answer:

Step-by-step explanation:

Given a correlation coefficient of -.11 the correlation would be extremely weak therefore it would have almost no correlation or causation

Why? Well when the value of the correlation is between -.1 and .1 then the relationship is said to have no correlation

-.11 is very close to -.1 thus meaning it would have pretty much no correlation

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3 years ago

Read 2 more answers

Please help this is my last question

Ira Lisetskai [31]

It appears that there are 30 students total (14 Male students and 16 Female Students)

We are interested in selecting a male student, and the probability of that happening is 14/30 which simplifies to 7/15

7/15 becomes 0.4667

Convert 0.4667 to a percentage and you are left with 46.67%

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3 years ago

Convert the polar coordinates (-3, -60°) to Cartesian coordinates.

notsponge [240]

Answer:

(1.5,-2.6)

Step-by-step explanation:

Given the polar coordinates (-3,60°).

Let our Cartesian coordinates be (x,y)

#We know that when converting the rectangular coordinates (x,y) to polar (r,θ), then:

$r=\sqrt{x^2+y^2}\\\\\therefore r^2=x^2+y^2\\\\\theta=tan^{-1}(y/x)\\\therefore tan \theta=y/x$

#Using the illustration above, we can express our polar coordinates as:

$-3=\sqrt{x^2+y^2}\\\\-60\textdegree=tan^{-1}(y/x}$

#Solve simultaneously to solve for x and y:

$(-3)^2=x^2+y^2\ \ \ \ \ \ \ \ \ \ i\\\\tan(-0\texdegree)=y/x\ \ \ \ \ \ \ \ ...ii\\\\y=x\ tan(-60\textdegree)\ \ \ \ \ \ \ ...iii\\\\\#substitute\ y \ in\ i\\\\(-3)^2=x^2+(x \ tan (-60\textdegree))^2\\\\9=x^2+3x^2\\\\x=\sqrt{9/4}=1.5\\\\y=1.5\ tan(-60\textdegree)=-2.5981\approx-2.6$

Hence, the Cartesian coordinates are (1.5,-2.6)

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3 years ago

What is the product when 20 3 is multiplied with 9 25 ?

Novay_Z [31]

Answer:

187.775

Step-by-step explanation:

20.3×9.25=

187.775

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3 years ago

Martin deposited $9,318 in a savings account earning 2% interest, compounded annually.

Lisa [10]

Answer:

$10,249.80

Step-by-step explanation:

I'm really tired but if you want an explanation, please say so

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3 years ago