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Svetllana [295]
4 years ago
10

I need 1-4 please help me

Mathematics
1 answer:
Neko [114]4 years ago
5 0
1. A = ¹/₂bh
    A = ¹/₂(25)(4)
    A = ¹/₂(100)
    A = 50 yd²

3. A = ¹/₂bh
    A = ¹/₂(3)(1)
    A = ¹/₂(3)
    A = 1¹/₂ cm²
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How do you determine where to place the decimal point in the product?
frez [133]

Let's look at an example:

2.24 x 21.6

2.24\\ 21.6\\ ______

Do normal multiplication and get

48384   This is not correct, until we put the decimals in. To know how to do this, count the number of decimal spaces from the factors. In 2.24, there are 2, because .24. In 21.6 there are 1 because of .6. This mean three places, so 48384 becomes

48.384

~theLocoCoco

7 0
3 years ago
Galen sold tickets for his church’s carnival for a total of $2,820. Children’s tickets cost $3 each and adult tickets cost $5 ea
Veronika [31]

Answer:

a = 195 ; c = 615

Step-by-step explanation:

So, you want to start by forming your equations...

I will use 'c' for children and 'a' for adults for my variables

3a + 30 = c  

(this is because of the info that 30 more tickets than 3 times the amount of children's were sold than adult)

then for equation 2:

3c + 5a = 2820

(this is because of the prices of the tickets and the total money raised)

Then, plug in the equation for c

Your equation should look like:

3(3a + 30) + 5a = 2820

You get:

(9a +90) + 5a = 2820

Then:

14a = 2730

So:

a = 195 adult tickets sold

Plug in a, to find c:

3 (195) + 30 = c

585 + 30 = c

c = 615 children tickets sold

4 0
3 years ago
How to solve this question?
Arisa [49]
F(g(x)) where you see an 'x' in f(x) put a g:

f(g(x)) = 1/(g-7), now step by step: g - 7 = 6/x+7-7=6/x, and 1/(g-7)=1/(6/x)=x/6!

I let the second one for you. Sorry if you disagree!
4 0
3 years ago
The speed of light is 3×10^8 m/so. Jupiter is 778 million km from the sun,calculate the number of minutes it takes for sunlight
Svetlanka [38]
Time taken=distance/speed
778000000000/300000000
=2593.33seconds
=43.22 minutes

6 0
3 years ago
Can you help me out for 10 pt
Aleksandr [31]
B is the right anwser. Hope i helped thanks
3 0
3 years ago
Read 2 more answers
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