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3 years ago

9

A: b = 7:4

1 answer:

Murljashka [212]3 years ago

3 0

A:b=7:4
b:c=2:5=4:10
a:c=7:10

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I REALLY NEED HELP

garri49 [273]

Look at the picture.

1.
$y=mx+b\\\\m=\dfrac{9}{3}=3\\\\b=4\\\\\boxed{f(x)=3x+4}$

2.
$f(x)=-2x+3\\\\for\ x=-2\to f(-2)=-2\cdot(-2)+3=4+3=7\to(-2;\ 7)\\for\ x=-1\to f(-1)=-2\cdot(-1)+3=2+3=5\to(-1;\ 5)\\for\ x=0\to f(0)=-2\cdot0+3=3\to(0;\ 3)\\for\ x=1\to f(1)=-2\cdot1+3=-2+3=1\to(1;\ 1)$

3.
$y=mx+b\\\\m=\dfrac{3}{6}=\dfrac{1}{2}=0.5\\\\b=-3\\\\\boxed{f(x)=0.5x-3}$
$for\ x=-6\to f(-6)=-6\\for\ x=-2\to f(-2)=-4\\for\ x=0\to f(0)=-3\\for\ x=6\to f(6)=0$

4 0

3 years ago

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Grace [21]

4.26666667. (Round it)

6 0

3 years ago

Read 2 more answers

The area of a triangle is found using the following formula:

Serjik [45]

Answer:

12

Step-by-step explanation:

a=bh x 1/2

If you plug in 3=b and 8=h it is now

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Hope this helps :)

5 0

3 years ago

Subtract:<br> (-9z-7) – 11z

umka2103 [35]

Answer: -20z-7

Step-by-step explanation:

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(-9z-11z)-7

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Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY! As well as a great Valentines Day! :-)

- Cutiepatutie ☺❀❤

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3 years ago

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Ksenya-84 [330]

The answer is B) 2 and 3

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3 years ago