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3 years ago

Please answer this correctly

Mathematics

1 answer:

Wewaii [24]3 years ago

5 0

Answer:

Question 1

Step-by-step explanation:

1) Let the outside temperature = x ° F

Now, the inside temperature = (x + 3)° F

Outside temperature has increased by 3,

So, outside temperature at lunch time = (x + 3)°F

So, at lunch time the outside & inside temperature are same.

So, the difference in temperature at lunch time is 0

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Write the expression as a product:<br><br> 1–(2x–1)^2

postnew [5]

Answer:

$1- ( { 2 x - 1)}^{2} = 4x (1 - x )$

Step-by-step explanation:

We want to to rewrite

$1 - ( { 2 x - 1)}^{2}$

Use difference of two squares to get:

${a}^{2} - {b}^{2} = (a + b)(a - b)$

This implies that:

${1}^{2} - ( { 2 x - 1)}^{2} = (1 +( 2x - 1))(1 - (2x - 1))$

${1}^{2} - ( { 2 x - 1)}^{2} = (1 + 2x - 1)(1 - 2x + 1)$

This finally simplifies to:

${1}^{2} - ( { 2 x - 1)}^{2} = 2x (2 - 2x )$

Therefore the required product is

$2x (2 - 2x ) = 4x(1 - x)$

3 0

3 years ago

Which of the following expressions represents “5% of a number”?

Svet_ta [14]

Answer:

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

If y = 124 and x = 12, find y when x = -24.

tatyana61 [14]

Answer:

y = -248

Step-by-step explanation:

Hi there!

Set up a proportion:

$\displaystyle\frac{124}{12} =\frac{y}{-24}$

Cross-multiply:

$12y=(-24)(124)\\12y=-2976\\y=-248$

I hope this helps!

7 0

2 years ago

How do I solve this

Montano1993 [528]

Use arccos...cos^-1 so

cos^-1 (0.8195)

it equals 34.96522689°

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3 years ago

Of the 168 hours in a week, as a full time student, you should spend how many hours per week on school work?

bonufazy [111]

I like to use 8 hours of school a day so thats 21 a week but all people are different so at most 36 hours a week

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3 years ago