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3 years ago

PLEASE HELP ME ON THIS QUESTION FAST

Mathematics

2 answers:

IrinaVladis [17]3 years ago

8 0

The answer is y = 8x + 9

Dominik [7]3 years ago

6 0

Y=8x+9

The slope intercept form is y=Mx+b
B is the y intercept so when moving up 9units, you are adding 9 to the y. Therefore y=8x+0 turns into y=8x+9

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What is the ratio of 40cm and 18mm

snow_tiger [21]

40 cm = 400 mm, so 400 mm / 18 mm = 200:9, or 22.22:1.

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2 years ago

Which are the roots of the quadratic function f(b) = 62 – 75? Select two options.

elena55 [62]

Answer:

$b = 5 \sqrt{3} \ or\ b = -5 \sqrt{3}$

Step-by-step explanation:

Given

$f(b) = b^2 - 75$

Required

Determine the roots

To get the root of the function, then f(b) must be 0;

i.e. f(b) = 0

So, the expression becomes

$0 = b^2 - 75$

Add 75 to both sides

$75 + 0 = b^2 - 75 + 75$

$75 = b^2$

Take square roots of both sides

$\sqrt{75} = \sqrt{b^2}$

$\sqrt{75} = b$

Reorder

$b = \sqrt{75}$

Expand 75 as a product of 25 and 3

$b = \sqrt{25*3}$

Split the expression

$b = \sqrt{25} *\sqrt{3}$

$b = \±5 *\sqrt{3}$

$b = \±5 \sqrt{3}$

$b = 5 \sqrt{3} \ or\ b = -5 \sqrt{3}$

The options are not clear enough; however the roots of the equation are $b = 5 \sqrt{3} \ or\ b = -5 \sqrt{3}$

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3 years ago

Phoebe compared the cost of books in 9 different stores.

krek1111 [17]

You have to put the numbers in order and find the middle value so in this case it's-

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The answer is $6

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3 years ago

A dime is 1/2 inch wide if you put 5 dimes end to end, how long will they be begginning to end

Contact [7]

If you put 5 which means its 2 1/2 ( I think) Because two 1/2 makes one.

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3 years ago

Read 2 more answers

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nataly862011 [7]

Answer:

The estimate is greater then.

Step-by-step explanation:

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286*2=572 not 6,517

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2 years ago