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Gnesinka [82]
3 years ago
15

Rate change word problems. Question attached

Mathematics
1 answer:
babymother [125]3 years ago
7 0
The Answer is 11.5 min it takes 6 people to paint 4 walls
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5(x+y) use the distributive property
tester [92]

Answer: ⇒ =5x+5y

Step-by-step explanation:

First you had to used distributive property.

Distributive property: ⇒ a(b+c)=ab+ac

Then apply distributive law.

a=5, b=x, c=y

Final answer: \boxed{=5x+5y}

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

-Charlie

4 0
3 years ago
Read 2 more answers
Pls help me nobody ever wants to 6th grade math
weqwewe [10]

Answer:

The average number of students in kindergarten classes is 21.

Step-by-step explanation:

To do this, just add them up and divide by the total number (which is 10).

6 0
3 years ago
Solve the simultaneous equations:<br> 3x + 2y = 35 <br> 2x + 3y = 30
lesya [120]

Answer:

nuber 1

Simplifying

3x + 2y = 35

Solving

3x + 2y = 35

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-2y' to each side of the equation.

3x + 2y + -2y = 35 + -2y

Combine like terms: 2y + -2y = 0

3x + 0 = 35 + -2y

3x = 35 + -2y

Divide each side by '3'.

x = 11.66666667 + -0.6666666667y

Simplifying

x = 11.66666667 + -0.6666666667y

5 0
3 years ago
From the set {7, 21, 63}, use substitution to determine which value of x makes the inequality true.
valina [46]

Answer:

63

Step-by-step explanation:

Assume, instead of > there was a =

In that case, x ÷ 7 = 3, then x would be 21. But we want a value that will be exceed this 21. So the only option you have is 63.

4 0
3 years ago
Coach Shaw is buying baseball equipment for his team. He gets a reduced rate if he buys 8 baseballs for every 3 batting helmets.
Natalija [7]

Answer:

Helmets-12

Baseballs-32

Step-by-step explanation:

Given the tax rate as 6% and the reduced prices as $2.25/baseball and $22.50/helmet and that the budget is $400:

The new prices are reduced price plus tax:

Baseball \ Price =2.25\times (1.06\%)=2.39\\\\Helmet \ Price= 22.50\times (1.06\%)=23.85

Let x be the number of groups of 8 baseballs as well as the number of groups of 3 helmets,therefore:

8x(2.39)+3x(23.85)=400\\\\19.12x+71.55x=400\\\\x=4.4116\\\\x\approx 4

Substitute for x=4 to find the highest number of baseballs and helmets:

Helmets=4x3=12

Baseball=4x8=32

#Price cost will be 12x23.85+32x2.39=362.68 (balance=37.32)

Hence, Shaw can buy 12 helmets and 32 baseballs and still remain with $37.32

3 0
3 years ago
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