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3 years ago

I lowkey need help on this whos got the answer

Mathematics

2 answers:

Mariana [72]3 years ago

7 0

find the area A=b*h/2

bases=11

height=23

A=11*23/2

A=126.5 square unit

SpyIntel [72]3 years ago

4 0

Answer:

11, square with side length of 11 units

Step-by-step explanation:

We know that to find the area of a triangle you follow this formula :

$1/2bh$

The area of this triangle is 121 ( 22 * 11 * .5)

And we know that the formula for the area of a square is

$length * width$

We also know that all sides of a square are the same length, so we can use the equation of

$Length^2 =area$

We can now substitute the area of the triangle in for the area of the square.

$Length^2 =121$

Find the square root of both sides

$\sqrt{length^2} = \sqrt{121}$

Simplify

$length=11$

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For the function F defined by F(x) = x2 – 2x + 4, find F(b+3).

Ivanshal [37]

Answer:

$\displaystyle F(b + 3) = b^2 + 4b + 7$

Step-by-step explanation:

We are given the function:

$\displaystlye F(x) = x^2 - 2x + 4$

And we want to find F(b + 3).

We can substitute:

$\displaystyle F(b + 3) = (b + 3)^2 - 2(b+3) + 4$

Expand:

$\displaystyle = (b^2 + 6b + 9) + (-2b -6) + 4$

Rearrange:

$\displaystyle = (b^2) + (6b-2b) + (9 - 6 + 4)$

Combine like terms. Hence:

$\displaystyle = b^2 +4b + 7$

In conclusion:

$\displaystyle F(b + 3) = b^2 + 4b + 7$

6 0

3 years ago

712 ÷ 74 is equal to _____. 3 7 3 1 3 7 8

Korolek [52]

Answer:

9.62162162162

Step-by-step explanation:

Use a calculator dude

7 0

3 years ago

Read 2 more answers

Joe borrowed $900 from Sam for six months. How much will Sam earn if he charges Joe a simple interest rate of 4 percent?

AleksAgata [21]

Simple interest
you can charge it monthly or yearly

find 4% and multiply by how many months or years
4% of 900=
0.04 times 900=36
that is each time the interst is added

if it is monthly, (6months so ) 6 times 36=216
if it is yearly (6months=1/2year so )6 times 1/2=3

if it is taken monthly, then Sam earns $216
if it is taken yearly, then Sam earns $3

7 0

3 years ago

Read 2 more answers

A thermometer is taken from a room where the temperature is 20°C to the outdoors, where the temperature is 3°C. After one minute

IrinaVladis [17]

Answer:

A. T=7.12°C; B. t=3.32min

Step-by-step explanation:

In order to find the answer we can use the Newton's law of cooling:

$y(t)=y0e^{kt}$ where:

y0=initial temperature - room temperature

k=coefficients

t=time

Because the outdoors temperature is 3°C, the initial temperature is 20°C, and because the thermometer reads 11°C after 1min we have:

$11=(20-3)e^{k*1}$

$ln(11/17)=k$

$-0.4353=k$

A. Temperature after an extra minute.

$y(2)=17e^{-0.4353*2}$

$y(2)=7.12$ so the answer is 7.12°C

B. Time in order to read 4°C

$4=17e^{-0.4353*t}$

$ln(4/17)/(-0.4353)=t}$

$3.32min=t$

6 0

3 years ago

I am very confused, I need help, please!!!!

seropon [69]

Answer: B

Step-by-step explanation:

A is incorrect because going from -10 to 10 is not 0, it is 20.

C is incorrect because 21 km from sea level is adding 21.

D is incorrect because the total distance biking to school and back is actually 6.2.

B is correct because buying an item for the same price then selling it for the same price results in no increase in profit but consistency therefore being 0.

7 0

3 years ago