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3 years ago

8

PLEASE PLEASE HELP what is f(1)

2 answers:

GREYUIT [131]3 years ago

5 0

Answer:

f(1)=5

Step-by-step explanation: If you plug in 1 for x on the graph, then y is equal to 5.

Dafna1 [17]3 years ago

4 0

Answer:

5

Step-by-step explanation:

f(1) means what is the value when x=1. y is at 5.

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zepelin [54]

Answer:

<em>Answer</em><em> </em><em>is option</em><em> </em><em>c</em>

Step-by-step explanation:

$given \: equations \: are \\ x - 2y = 15 \: \: and \: 2x + 4y = - 18 \\ divide \: by \: 2 \: in \: second \: equation \\ x + 2y = - 9 \: \: (equation \: 3) \\ adding \: 1and \: 3 \: we \: get \\ 2x = 6 \\ x = 3 \\ substitute \: x = 3 \: in \: equation \: 3 \\ 3 + 2y = - 9 \\ 2y = - 9 - 3 \\ 2y = - 12 \\ y = - 6$

x=3 and y=-6

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<em>THANKS FOR GIVING ME THE OPPORTUNITY</em><em> </em><em>TO ANSWER YOUR QUESTION</em><em>. </em>

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3 years ago

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There are 61 centimetres of liquorice to be shared equally among 7 people. What length of liquorice will each person get?

Simora [160]

Answer:

8.71428571

do 61 divided by 7. Simple math.

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3 years ago

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Help!!! Please!!! I’ll mark you brainliest first person to answer!!! :)

katovenus [111]

I think it would be 9, but the graph seems a bit unclear so I’m really sorry if that doesn’t help..

7 0

3 years ago

There are 6 roses in a vase of 11 flowers. The rest are daisies. What is the ratio of all flowers in the vase to daisies (PICTUR

lara [203]

Answer:

a) 6:5

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3 years ago

Length of a rectangle is 5 cm longer than the width. Four squares are constructed outside the rectangle such that each of the sq

TiliK225 [7]

Answer:

The perimeter of rectangle is $18\ cm$

Step-by-step explanation:

Let

x-----> the length of the rectangle

y----> the width of the rectangle

we know that

$x=y+5$ ----> equation A

$120=xy+2x^{2}+2y^{2}$ ---> equation B (area of the constructed figure)

substitute the equation A in equation B

$120=(y+5)y+2(y+5)^{2}+2y^{2}$

$120=(y+5)y+2(y+5)^{2}+2y^{2}\\ 120=y^{2}+5y+2(y^{2}+10y+25)+2y^{2}\\ 120=y^{2}+5y+2y^{2}+20y+50+2y^{2}\\120=5y^{2}+25y+50\\5y^{2}+25y-70=0$

using a graphing calculator -----> solve the quadratic equation

The solution is

$y=2\ cm$

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Find the perimeter of rectangle

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4 years ago

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