MATHEMATICS HIGH SCHOOL

Simpify this expresion 7+5h+2h+7h2–2h2

Answers

Answer 1

Answer:

Answer:

$5h^2 + 7h + 7$

Step-by-step explanation:

We can simplify this expression by combining like terms.

To combine like terms, we are looking for terms that share the same variable and exponent.

First, we can see that the terms $7h^2$ and $-2h^2$ share the same variable (h) and the same exponent (2).

$7 - 2 = 5$

This simplifies to $5h^2$ .

Next, we can see that $5h$ and $2h$ share the same variable (h) and the same exponent (1) so we can add these.

$5+2=7$

This simplifies to $7h$ .

Lastly, we can see that we just have 7, no more terms with the same variable (none). So this is 7.

Adding up all the terms in standard form ( $ax^2 + bx + c$ ), we get $5h^2 + 7h + 7$ .

Hope this helped!

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The temperature in austria one morning was -5 degrees celcias at 08 oclock and increased by 2 degrees celcias every hour until 12 oclock ,what will be the temperature be at half past 11

Answers

the temperature in Austria will be 10 degrees Celsius at half past 11.

We can start by calculating how much the temperature will increase from 8 am to 12 pm:

From 8 am to 9 am: temperature increases by 2 degrees Celsius

From 9 am to 10 am: temperature increases by 2 degrees Celsius

From 10 am to 11 am: temperature increases by 2 degrees Celsius

From 11 am to 12 pm: temperature increases by 2 degrees Celsius

Therefore, the temperature at 12 pm will be:

-5 + 2 + 2 + 2 + 2 = -5 + 8 = 3 degrees Celsius

Now, we need to calculate how much the temperature will increase from 12 pm to 11:30 am:

From 12 pm to 1 pm: temperature increases by 2 degrees Celsius

From 1 pm to 2 pm: temperature increases by 2 degrees Celsius

From 2 pm to 3 pm: temperature increases by 2 degrees Celsius

From 9 pm to 10 pm: temperature increases by 2 degrees Celsius

From 10 pm to 11 pm: temperature increases by 2 degrees Celsius

From 11 pm to 11:30 pm: temperature increases by 1 degree Celsius

Therefore, the temperature at half past 11 will be:

3 + 2 + 2 + 2 + 1 = 10 degrees Celsius

learn more about temperature here:

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What is the factored form of 2x3 + 4x2 – x?a) 2x ( x^2 + 2x + 1)
b) x (2x^2 + 4x + 1)
c) 2x (x^2 + 2x - 1)
d) x (2x^2 + 4x -1)

Answers

To solve this question, we need to write this equation in simplified form.
So, Taking the GCF from 2x³ + 4x² - x,
x is divisible by all of them so our new equation will be,

x ( 2x² + 4x - 1)
Correct option is D.

Hope this helped you.. :)

suppose that you're building a shed and me to pour concrete slab to support it. You know that the slab will be 15 feet wide, 10 feet long, 6 inches deep. concrete is usually sold by the cubic yard. How many cubic yards of concrete will you need for the slab?

Answers

convert all to one unit - I'm choosing feet
15 x 10 x 0.5 = 15 x 5 = 75 feet
1 cubic yard = 1 yard x 1 yard x 1 yard = 3 ft x 3 ft x 3 ft = 27 feet?

75/27 = 2.77777778 cubic yards (I think)

Solve for m: 8(m+5)=16 ?

Answers

8(m+5)=16
8m+40=16
8m=24
m=3

8+5=13 then 16 -13 is 3=m

Can someone PLEASEE help ?!:))

Answers

Answer:

a and d

Step-by-step explanation:

multiple/divide the top and bottom by 2

Answer to 1+4=5 2+5=12 3+6=21 8+11=?

Answers

It appears that each consecutive answer is added to the next operation such that ((1+4)=5)+2+5=12, because 2+5=7, but when added to (1+4), the answer is 12, and so on.

Thus,
(1+4)=5 + (2+5)=12 + (3+6)=21 + (8+11)=40

the answer will be 19

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Write the equation of the line that contains the given point and has the given slope. (–1, 4), slope is –3

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Write the given sentence as an equation.Tim’s age in 7 years will be three times what it was 19 years ago. A.)3(t + 19) = t – 7 B.)3(t + 7) = t – 19 C.)t + 19 = 3(t – 7) D.)t + 7 = 3(t – 19)