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3 years ago

I need help answering this equation (4+5)÷3×4=

Mathematics

2 answers:

masya89 [10]3 years ago

7 0

4+5=9 divided by 3 is 3 times 4 is 12. so it's 12

hope this helps;)

hjlf3 years ago

7 0

You do the numbers I'm '( )' first so 4+5=9 so then you do 3×4=12 so then you put 9 and 12 with your subject

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Solve 2x2 + 20x = −38.

Makovka662 [10]

Answer:

Correct Answer is C(−5 ±square root 6)

Step-by-step explanation:

2x^2+20x+38=0

2(x^2+10x+19)=0

x^2+10x+19=0

This is a quadratic equation here we have used following formula to find the roots of this equation

x=-b−±square root (b^2-4*a*c))/2*a......(1)

Here,

a=1

b=10

c=19

put values of a, b and c in equation (1)

x=(-10 ±square root(10^2-4*1*19))/2*1

x=(-10 ±square root(100-76))/2

x=(-10 ±square root(24))/2

x=(-10 ±square root(2*2*6))/2

x=(-10 ±2square root(6))/2

x=2(-5 ±square root(6))/2

x=-5 ±square root(6)

Hope this answer will help you

6 0

3 years ago

What is the solution to this system of equations?

labwork [276]

Answer:

Step-by-step explanation:

C. x=7, y=5

4 0

2 years ago

Han, his sister, his dad, and his grandmother step onto a crowded bus with only 3 open seats for a 42-minute ride. They decide H

aivan3 [116]

Answer:

Han= 24 minutes

His sister= 24 minutes

His Dad= 36 minutes

Grandmother= 42 minutes

Step-by-step explanation:

Please see attached picture for full solution.

Where the working split, see the right hand side.

The question states that Han's Dad sits 1.5 times as long as both Han and his sister. There could be 2 interpretations for this:

- Dad sits for 1.5 times of (Han and his sister)

- Dad sits for 1.5 times of Han and 1.5 times of Han's sister

I've done the working for both scenarios and found out that the 1st case cannot be true since Dad would've sat for 50.4 minutes when the bus ride is only 42 minutes! Moreover, there wouldn't be enough information to know how long Han and his sister sat for.

The second case is possible and it's working is on the right.

Feel free to ask if you have any enquiries :)

3 0

3 years ago

Deon buys candy that cost $6 per pound. he will buy at most 7 pounds.

marta [7]

Answer:

He will spend 42 dollars

Step-by-step explanation:

7 times $6

= $42

(If that's what you're asking)

8 0

3 years ago

Read 2 more answers

A restaurant purchased 18 cases of hamburgers with 26 hamburgers in each case. Since that time they sold 73 hamburgers. How many

Lady bird [3.3K]

Answer:

395 Burgers.

Step-by-step explanation:

each crate has 26 burgers, if there are 18 crates its 18x26 which gives you 468 burgers. If they sold 73 after that, you subtract. 468-73= 395. They will have 395 burgers.

7 0

3 years ago