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3 years ago

How would you work this out ?

Mathematics

1 answer:

UkoKoshka [18]3 years ago

5 0

Answer:

Jake 2 1/2 Aflfie 1

2 \frac{1}{2} : 1

Step-by-step explanation:

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One of the roots of the equation 5x2−36x+t=0 is five times as big as the other root. Find the value of t.

Bas_tet [7]

Answer:

t = 36

Step-by-step explanation:

If one of the roots is "a", the equation can be factored as ...

(5x -a)(x -a) = 0

5x^2 -6ax +a^2 = 0

Comparing terms to the given equation, we see that ...

-6ax = -36x

a = 6 . . . . . . . . divide by -6

Then ...

a^2 = t

36 = t . . . . . . . substitute 6 for a

_____

The roots are 6 and 6/5.

4 0

3 years ago

3y+4=11y PLEASE STEP BY STEP: SHOW WORK PLEASE AND THANK YOU !!

bija089 [108]

3y + 4 = 11y
(take away 3y from both sides)
4 = 8y
(divide by 8 on both sides)
0.5 = y

y = 0.5

4 0

3 years ago

Read 2 more answers

(07.03)

fredd [130]

Answer:

\[(3x^2)3x^2\]

7 0

2 years ago

The length (L) of a rectangle of fixed area varies inversely as the width (W).

Andreyy89

Answer:

6.25

Step-by-step explanation:

If 10ft=8ft

=5ft

cross multiply

5 0

2 years ago

If m = 5 and n = -2, evaluate 3m - 4n and n2 - m and find the product of the two expressions.

ddd [48]

Hence the correct answer is C) -23

Further explanation:

We have to put the values of m and n into both expression first separately and then multiply the answers.

Given expressions are:

$Exp\ 1:3m-4n\\Exp\ 2: n^2-m$

The values are:

$m=5\\n=-2$

Putting the values in expression 1:

$3m-4n\\=3(5)-4(-2)\\=15+8\\=23$

Putting the values of m and n in second expression

$n^2-m\\=(-2)^2-5\\=4-5\\=-1$

Multiplying both expressions:

$(3m-4n)(n^2-m)=23* (-1)=-23$

Hence the correct answer is C) -23

Keywords: Polynomials, Putting values in expressions

Learn more about polynomials at:

#LearnwithBrainly

8 0

3 years ago