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3 years ago

Write an expression showing the sum of a number h and a number w minus 11.

Mathematics

1 answer:

uysha [10]3 years ago

4 0

Answer: The required expression would be

h + w - 11

Step-by-step explanation:

Here the given phrase,

The sum of a number h and a number w minus 11.

Since, Sum of h and w = h plus w = h + w

Also, the sign of minus is '-'

Therefore,

The sum of h and w minus 11 = h + w - 11

Which would be the required expression.

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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

Jackie drinks a bottle of water and a bottle of orange juice every morning.

melisa1 [442]

Answer:

15.30

Step-by-step explanation:

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3 years ago

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The temperature in the desert can

Tanya [424]

Answer:

There is an 144 degree difference.

Step-by-step explanation:

112=(-32)+x

solve like a regular equation which will give you 144

(add 32 to 112)

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2 years ago

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The area of the red part is greater than the area of the blue part.

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What is the domain of f(x) = (x + 2)2 – 1?

larisa [96]

Simplify

$\\ \tt\Rrightarrow f(x)=(x+2)^2-1$

$\\ \tt\Rrightarrow f(x)=x^2+4x+2-1$

$\\ \tt\Rrightarrow f(x)=x^2+4x+1$

The Domain is set of all real numbers

$\\ \tt\Rrightarrow Domain\in R$

4 0

2 years ago