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2 years ago

How do you know when to use a trig function when solving an equation?

1 answer:

4 0

Answer: Bow Bang Hit his brain catch me a opp Ima treat him and beat him and show me lane I lost my brother so it won't be the same.

Step-by-step explanation:

lol this is where we talk now

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What is a universal set

IrinaK [193]

Answer:a universal set is the set containing all objects or elements and of which all other sets are subsets.

Step-by-step explanation:

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3 years ago

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A triangle has sides 12, 14, and 25. Is it a right traingle?

pickupchik [31]

No because the sides are different if they were the same they would be a right triangle

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3 years ago

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Kyle drove his car 250 miles on 20 gallons of gas. How many miles per gallon did Kyle average?

weqwewe [10]

Answer:

Step-by-step explanation:

250 divided by 20= 12.5

So 12.5 miles per gallon.

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3 years ago

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Write a polynomial f(x) that meets the given conditions. Answers may very

AnnZ [28]

The polynomial is: $f(x)=x^3-2x^2-23x+60$

Step-by-step explanation:

We need to write a polynomial f(x) that meets the given conditions: Degree 3 polynomial with zeros 3,-5,4

Since zeros are at 3,-5 and 4

So, x=3, x=-5 and x=4

or:

x-3=0, x+5=0 and x-4=0

Multiplying all factors to find the polynomial:

$(x-3)(x+5)(x-4)=0\\(x(x+5)-3(x+5))(x-4)=0\\(x^2+5x-3x-15)(x-4)=0\\(x^2+2x-15)(x-4)=0\\x(x^2+2x-15)-4(x^2+2x-15)=0\\x^3+2x^2-15x-4x^2-8x+60=0\\x^3+2x^2-4x^2-15x-8x+60=0\\x^3-2x^2-23x+60=0$

So, the polynomial is: $f(x)=x^3-2x^2-23x+60$

keywords: Factors and zeros of polynomial

Learn more about Factors and zeros of polynomial at:

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4 0

3 years ago

A gift basket that contains jars of jam and packages of bread mix costs $45. there are 8 items in the basket. jars of jam cost $

poizon [28]

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Define jam and bread mix
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Let the number of jar of jam be x
Let the number of packages of bread mix be y

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Form equations and solve
------------------------------------------------------
x + y = 8 --------------------- (1)
6x + 5y = 45 ---------------- (2)

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Rewrite equation to make x the subject
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x+ y = 8
x = 8 - y ----------------------------(1a)

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Substitute (1a) into (2)
------------------------------------------------------
6(8 - y) + 5y = 45
48 - 6y + 5y = 45
y = 48 - 45
y = 3

------------------------------------------------------
Substitute y = 3 into (1) to find x
------------------------------------------------------
x + 3 = 8
x = 8 - 3
x = 5

------------------------------------------------------
Find jam and bread mix
------------------------------------------------------
Jars of Jam = x = 5
Packages of bread mix = y = 3

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Answer: Jam = 5 ; bread mix = 3
------------------------------------------------------

7 0

3 years ago