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irakobra [83]
3 years ago
6

How to do you solve c/3=30/5

Mathematics
1 answer:
Viktor [21]3 years ago
3 0

Answer:

c=18

Step-by-step explanation:

<em>To solve for c you need to do cross product property</em>

You have to multiply diagonally

So 3*30= 90

5*c= 5c

90= 5c

Now its a one step equation

Divide 90 by 5 =18

c= 18

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5(x+2)=20 explain step by step
garri49 [273]
Divide by 5 each side
X+2=4
Subtract 2 from each side
X=2

5(2+2)=20
Does work


In algebra when isolating (leaving alone on one side) x, you do the opposite operation, thus multiplying when you are trying to get rid of a division and vice versa
6 0
2 years ago
Eva and Ola have some amount of money,
hram777 [196]

Answer:

<em>£</em><em>1</em><em>9</em>

Step-by-step explanation:

Cheryl = 7 + 5 = £12

this means ova and eva also have £12 at the end

EVA'S ORIGINAL AMOUNT : X -7 =12

X = £19

6 0
3 years ago
Please answer and simplify -5/8 + (-8/5)
alexandr402 [8]

Answer:

-89/40 or simplified it is -2 9/40

6 0
3 years ago
Read 2 more answers
Verify that -5, 1/2, and 3/4 are the zeroes of the cubic polynomial 4x^3+20x^2+2x-3. Also verify the relationship between the ze
Finger [1]

Solution:

we have been asked to verify that -5, 1/2, and 3/4 are the zeroes of the cubic polynomial 4x^3+20x^2+2x-3

To verify that whether the given values are zeros or not we will substitute the values in the given Polynomial, if it will returns zero, it mean that value is Zero of the polynomial. But if it return any thing other than zeros it mean that value is not the zero of the polynomial.

Let f(x)=4x^3+20x^2+2x-3\\\\\text{when x=-5}\\\\f(-5)=4(-5)^3+20(-5)^2+2(-5)-3=-13\\\\\text{when x=}\frac{1}{2}\\

f( \frac{1}{2} ) = 4 ( \frac{1}{2} )^3+20(\frac{1}{2})^2+2(\frac{1}{2})-3=\frac{7}{2}\\\\

\text{when x=}\frac{3}{4}\\\\

f( \frac{3}{4} ) = 4 ( \frac{3}{4} )^3+20(\frac{3}{4})^2+2(\frac{3}{4})-3=\frac{183}{16}\\

Hence -5, 1/2, and 3/4 are not the zeroes of the given Polynomial.

Since sum of roots=\frac{-b}{a}= \frac{-20}{4}=-5\\

But -5+\frac{1}{2}+\frac{3}{4}=  \frac{-15}{4}\neq-5

Hence we do not find any relation between the coefficients and zeros.

Anyway if the given values doesn't represents the zeros then those given values will not have any relation with the coefficients of the p[polynomial.

6 0
2 years ago
Please solve in the picture!
iris [78.8K]

Answer:

Step-by-step explanation:

As we know that from a theorem,

A greater angle of a triangle is opposite a greater side. Let ABC be a triangle in which angle ABC is greater than angle BCA; then side AC is also greater than side AB. For if it is not greater, then AC is either equal to AB or less.

As we have  angle A =120 so it means the other 2 angles will be less than angle A , hence the opposite side to angle A is BC ,

Hence BC line is the longest line in triangle ABC

6 0
2 years ago
Read 2 more answers
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