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3 years ago

F(x) = 3(x - 5)(x + 2), then f(5) = and f(-2) =

Mathematics

1 answer:

Nutka1998 [239]3 years ago

5 0

Answer:

Step-by-step explanation:

Put x as 5 and solve.

3(5 - 5)(5 + 2)

3(0)(5 + 2)

3(0)(7)

= 0

Put x as -2 and solve.

3(-2 - 5)(-2 + 2)

3(-7)(0)

= 0

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Answer:

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A rectangle and a square have equal areas. The rectangle has length of 9 cm and width 4 cm. What is the perimeter of the square

pshichka [43]

Answer:

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Step-by-step explanation:

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3 years ago

-15 = x/-0.5<br> I really am just bad at math TOT

solniwko [45]

Answer:

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Step-by-step explanation:

Given

- 15 = $\frac{x}{-0.5}$ ( multiply both sides by - 0.5 to clear the fraction )

- 15 × - 0.5 = x

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3 years ago

2. Calculate the equation of the following line.

Verizon [17]

Answer:

1/y=7
2/x+3/y=17(x

=0 and y

=0)
Medium
Solution
verified
Verified by Toppr
Simplify given equations:
Let 1/x=u and 1/y=v
1/x+1/y=7 implies
u+v=7
2/x+3/y=17 implies
2u+3v=17
New set of equation is:
u+v=7...(1)
2u+3v=17...(2)
From equation (1):a
1
=1,b
1
=1 and c
1
=−7
From equation (2):a
2
=2,b
2
=3 and c
2
=−17
Using cross multiplication method:
−17+21
u
=
−14+17
v
=
3−2
1
4
u
=1 and
3
v
=1
u=4 and q=3
x=1/4 nad y=1/3 [Since we consider p=1/x and q=1/y]
Answer x=1/4,y=1/3
2/x+3/y=17(x

=0 and y

=0)
Medium
Solution
verified
Verified by Toppr
Simplify given equations:
Let 1/x=u and 1/y=v
1/x+1/y=7 implies
u+v=7
2/x+3/y=17 implies
2u+3v=17
New set of equation is:
u+v=7...(1)
2u+3v=17...(2)
From equation (1):a
1
=1,b
1
=1 and c
1
=−7
From equation (2):a
2
=2,b
2
=3 and c
2
=−17
Using cross multiplication method:
−17+21
u
=
−14+17
v
=
3−2
1
4
u
=1 and
3
v
=1
u=4 and q=3
x=1/4 nad y=1/3 [Since we consider p=1/x and q=1/y]
Answer x=1/4,y=1/3
(i) 2(3−2x)=13
⇒ 6−4x=13 ⇒ 4x=6−13=−7
⇒
x=
4
−7
(ii)
2
x
=5+
3
x
⇒
2
x
−
3
x
=5 ⇒
6
3x−2x
=5
⇒
6
x
=5 ⇒
x=30
(iii) 7(x−2)=2(2x−4)
⇒ 7x−14=4x−8 ⇒ 3x=6
⇒
x=2
(iv) 3x−
3
1
=2(x−
2
1
)+5
⇒ 3x=2x−1+5+1/3
⇒ x=4+
3
1
⇒
x=
3
13
I don't know 4th questions answer sorry

Step-by-step explanation:

here is your answer Hope you will enjoy and mark me as brainlist

thank you

8 0

3 years ago