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Anton [14]
2 years ago
5

Estimate the sum of 8.43 + 8.12 + 7.98

Mathematics
2 answers:
JulsSmile [24]2 years ago
8 0
You will do 8.43+8.12+7.98 which will equal to 24.53 and u can do that using a calculator
Zinaida [17]2 years ago
8 0

Answer:

24.53 is your answer!

Step-by-step explanation:

add all of the numbers from the correct place values.

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Andrew is riding his bike. He biked a distance of 14 miles at a rate of 7 miles per hour. Using the distance formula, d = it, so
Assoli18 [71]

Answer:

120 minutes

Step-by-step explanation:

D=it 14/7 is 2, multiply 2 by 60 you get 120

5 0
2 years ago
Tickets to a play cost $11 for each adult and $4 for each child. If 360 tickets were sold for a total of 2826, how many tickets
Vesna [10]
Well take 11 decided by 4 then take tat decided by 360
7 0
3 years ago
Select the correct answer.
jarptica [38.1K]
A is the correct answer
7 0
3 years ago
Hello I don’t understand question 9 a and b. Please show working out.<br> Thanks
brilliants [131]
A) I would make the positive integer x and then form an equation.

x + 30 = x^2 - 12
x + 42 = x^2
0 = x^2 - x - 42 this can be factorised
(x - 7) ( x + 6) Therefore x = 7 or x = -6

Since the question asks for a positive integer the answer is 7.

B) two positive numbers x and y.

X - y = 3
x^2 + y^2 = 117

Use these simultaneous equations to figure out each number.

Rearrange the first equation

x = y + 3

Then substitute it into the second equation.

(y+3)^2 + y^2 = 117
y^2 + 6y + 9 + y^2 = 117
2y^2 + 6y - 108 = 0
then factorise this.
(2y - 12) (y + 9)

This means that y = 6 or y = -9 but it’s 6 because that’s the only positive number.

Use y to find x

x = y + 3
x = 6 + 3
x = 9

So the answers are x = 9 and y = 6.
3 0
3 years ago
I don't understand this, please help ​
dimulka [17.4K]

Answer:

∠2 = 150°, it is a supplementary angle to 30°

∠3 = 30°, it is an alternate angle to 30°

∠4 = 150°, it is a supplementary angle to 30°

∠5 = 30°, it is an alternate angle to 30°

∠6 = 150°, it is a supplementary angle to 30°

∠7 = 30°, it is an alternate angle to 30°

∠8 = 150°, it is a supplementary angle to 30°

6 0
3 years ago
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