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notka56 [123]
2 years ago
13

9² • (1+4) + 7 – 3 • 4 =

Mathematics
2 answers:
Marizza181 [45]2 years ago
5 0
The answer is your looking for is 400
ANEK [815]2 years ago
5 0

Answer:

400.

Step-by-step explanation:

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Answer all for points
IceJOKER [234]

Answer:

1. If we drink 8 glasses, we are drinking 2 L of water, so we are exceeding 1 L of water per day.

2. We need 100 sections.

I used metric conversion to convert km to meters.

3. 230 mL  of lemonade per person

I used metric conversion to convert L to ML

Step-by-step explanation:

1.  250 mL  = 1 glass

We are drinking 8 glasses

8 glasses * 250 ml/ 1 glass = 2000 mL

1 L = 1000 mL

2000 mL * 1 L/1000 mL =2 L

If we drink 8 glasses, we are drinking 2 L of water, so we are exceeding 1 L of water per day.

I used metric convertsion to convert mL to liters.

Guardrails sections to be 5m long

Road length that needs a guardrail is .5 km.  We need to convert this to meters  1000 m = 1 km

.5km * 1000m / 1km = 500 meters

We have 500 meters that needs guardrails.

500 meters * 1 section/ 5 meters = 100 sections

We need 100 sections.

I used metric conversion to convert km to meters.


3.  6.9 L of lemonade to serve 30 people.  We want to serve ml

Convert L to mL

1L = 1000 ML

6.9 L * 1000 ml/1L = 6900 mL

We need to divide 6900 Ml by 30 people

6900mL/30 people = 230 mL  of lemonade per person

I used metric conversion to convert L to ML


5 0
3 years ago
What is the unit rate if there are 258 purple polka-dot pencils in 3 purple polka-dot purses?
stiks02 [169]
Unit rate means one. So the best way to solve this is using a proportion over one. If there are 258 pencils in 3 purses 258/3 then how many are in one purses x/1. Cross multiply next. 258/3 * x/1. You get 3x and 258. To get the x alone, divide both sides by three. Your answer is 86 pencils in one purse.
4 0
3 years ago
What is the solution to the equation? <br> x – 19 = 1
Romashka-Z-Leto [24]
+ 19 on both sides, -19 becomes 0, 1 becomes 20 x=20
3 0
3 years ago
What is the answer to this problem
ladessa [460]
3:5 my answer has to be 20 characters so im just typing the rest of this to answer your question.
7 0
3 years ago
Read 2 more answers
How many times greater is 46 than .46
anyanavicka [17]
100 times bigger .46x100=46
3 0
2 years ago
Read 2 more answers
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