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xxTIMURxx [149]
3 years ago
12

Can anyone help me with this

Mathematics
1 answer:
elena-s [515]3 years ago
4 0
6x3 +2x2-3x-7 these are supposed to go in the boxes
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Hellpp please 20 points for that​
Sergio [31]

Answer:

a) 12cm

b) 360cm²

c) 2160cm cubed

Step-by-step explanation:

a)

you would use Pythagoras theorem  for A

so half of 18 is 9

15² - 9² = 144

the square root of 144 is 12

the height is 12cm

b)

18 x 20 = 360cm²

c)

csa x L

csa = b x h divide by 2

18 x 12 = 216cm²/2 = 108cm²

108xm² x 20cm = 2160cm cubed

8 0
2 years ago
Parallelogram PQRS has diagonals that are perpendicular. Based on that, which statement is most correct?
viva [34]

Answer:

B- Parallelogram PQRS is also a rhombus.

Step-by-step explanation:

Given

Parallelogram PQRS with perpendicular diagonals

Required

Which of the option is true

(a) PQRS can be a rectangle

A rectangle do not have perpendicular diagonals.

Hence, (a) is false

<em>If (a) is false, then (d) is also false</em>

(b) PQRS can a rhombus

The diagonals of a rhombus are not perpendicular.

So (b) <em>is true</em>

<em>No need to check for (c), since only option is true</em>

4 0
3 years ago
Read 2 more answers
Write down the next term in each of the following sequences
Archy [21]
Answer is:
a) 32
b) 59
Both are arithmetic sequences
4 0
3 years ago
Read 2 more answers
Pls help with these math problems
katrin2010 [14]

Answer:

Step-by-step explanation:

1)

First we add what we know for y into the second equation.

5x - 4(x +2)= -3

From there, we simplify it

5x-4x-8= -3

x-8=-3

Now we get the x on its own

x=5

and now we add x=5 into the first equation that we had and simplify to find y

y=5+2

y=7

So the answer is x=5, y=7 or (5,7)

2)

For this one we do the same thing as with 1.

Add what we know for y (bottom equation) to the top equation

3x-8(x-8)=24

Now we simplify

3x-8x+64=24

-5x+64=24

And now solve for X

-5x=-40

x=8

And then substitute x=8 to find y

y=8=8

y=0

So the answer is x=8, y=0 or (8,0)

5 0
3 years ago
Help I'm still confused no need to explain.
guajiro [1.7K]
3.5 grams = 3,500 milligrams

4,500 pounds = 1.25 tons

3 pounds = 48 ounces
5 0
3 years ago
Read 2 more answers
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