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3 years ago

I need help understanding this and help with the problems...

Mathematics

2 answers:

Pavel [41]3 years ago

7 0

1. 15+37=?

15=10+5 (given on the diagram)
37=30+7 (given on the diagram)
add digits to digits 5+7=12=10+2
add tens to tens 10+30+10=50
add tens and digits 50+2=52.

2. 22+49=?

22=20+2 (given on the diagram)
49=40+9 (given on the diagram)
add digits to digits 2+9=11=10+1
add tens to tens 20+40+10=70
add tens and digits 70+1=71.

3. 38+26=?

38=30+8 (given on the diagram)
26=20+6 (given on the diagram)
add digits to digits 8+6=14=10+4
add tens to tens 30+20+10=60
add tens and digits 60+4=64.

Answer: 1) 52; 2) 71; 3) 64.

Phoenix [80]3 years ago

4 0

Number 1 is 52 number 2 is 71 and number 3 is 64

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4 years ago

Richie and Phoebe are saving money to buy a new tv. They need at least $510 to purchase the new TV. Phoebe weeds yards and Richi

den301095 [7]

Answer:

12x +9y ≥ 510
y ≤ 2x
y ≥ 25

Step-by-step explanation:

Phoebe earns 12x for her yard weeding, and Richie earns 9y for his dog walking. They want the sum of these earnings to be at least 510, so the first constraint inequality is ...

12x +9y ≥ 510

Richie plans to walk no more than 2x dogs, since y is the number of dogs he walks, the second constraint is ...

y ≤ 2x

Richie will walk at least 25 dogs, so ...

y ≥ 25

6 0

3 years ago

Read 2 more answers

What was the purpose of the Pendleton Act?

Amiraneli [1.4K]

The act was signed into law by President Chester A. Arthur.

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3 years ago

I need help with this .

vaieri [72.5K]

I would be glad to help you! I will solve through 3 to get you started.

This is a very important concept, so it would be helpful if you learn it on your own.

C= 2* pi* r

1. The radius is 5 cm. 5 cm represents r in the equation.
C= 2* 3.14 (or pi)* 5
Multiply it by using a calculator.
My answer was 31.4.

Let's try the second one.
2. The diameter is 9. Have of the diameter is the radius.
9/2= 4.5
Plug it into the equation.
C= 2*3.14*4.5
I got 28.26

One more.
Plug it into the equation.
C= 2*3.14*5.6
35.17 was my answer.

Make sure to add the end signs to you answer, ft, cm, meter, etc.

Let me know if you need more help.

Brainliest answer is always appreciated.

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3 years ago