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Ahat [919]
3 years ago
13

Help plsssssssssssssssssssssssss

Mathematics
2 answers:
jekas [21]3 years ago
5 0

Answer:

5. either a or b

6. 0

7. 82

8. 514

9. b:2

Dmitriy789 [7]3 years ago
3 0

Answer:

in 9th question the answer is (b) 2

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Need help plzz I am struggling
otez555 [7]

The equation you need to find x is,

12x^{\circ}+30^{\circ}=90.

Then solving for x gives you x=5.

Hope this helps.

7 0
3 years ago
I WILL MARK BRAINIEST
serg [7]

Answer:

h = 40.5 m

A) 1 : 9

B) 1 : 3

C) 40.5 m

Step-by-step explanation:

Let the height of the larger triangle be h

Therefore,

\frac{10}{90}= \frac{4.5}{h}\\\\\frac{1}{9}= \frac{4.5}{h}\\\\h = 9\times 4.5\\\\h = 40.5\:m\\

A)

The ratio of the area of small triangle to the large triangle

=\frac{10}{90}=\frac{1}{9}=1 : 9

B)

The ratio of the side length of small triangle to the side length of large triangle

=\sqrt{\frac{10}{90}} =\sqrt {\frac{1}{9}} =1 : 3

C) The height of the larger triangle is <u>40.5 m</u>

5 0
3 years ago
A rectangular plot of farmland will be bounded on one side by a river and on the other three sides by a​ single-strand electric
wlad13 [49]

Answer:

x = 600 m

y = 1200 m

Amax = 720000  m²

Step-by-step explanation:

Let call x the smaller side of the rectangular plot and y the largest ( we assume we have one y side bounded by a river: Then

A(p)  Area of the plot x*y

A(p) = x*y

And perimeter of the plot ( to be fenced ) is:

P(p)  = 2*x + y = 2400     ⇒  y  = 2400 - 2*x

Area of rectangular plot as function of x:

A(x) = x * ( 2400 - 2x )

Taking derivatives on both sides of the equation

A´(x) = ( 2400 - 2x ) + (-2) *x    ⇒  A´(x) = ( 2400 - 2x ) - 2x

A´(x) = 0      ⇒   2400 - 4x = 0    ⇒  4x  = 2400  

x = 600 m

And y =  2400 - 2*x

y = 2400 - 1200

y = 1200 m

And the largest enclosed area is  Amax = 1200*600

Amax = 720000 m²

4 0
4 years ago
Write the canonical equation of the straight line 2x+3y-2z+6=0, x-3y+z+3=0
Romashka-Z-Leto [24]

i hope this helps  

let me know if im wrong

6 0
4 years ago
Each week, Kelly works 2 days for 4 hours each day and earns $5 an hour. Len works 5 days for 2hours each day and earns $4 an ho
Leokris [45]
They both earn $40 i believe im right
4 0
4 years ago
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