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3 years ago

Yoshi reported the total area of the five great lakes on the chart above.

Mathematics

1 answer:

Katarina [22]3 years ago

8 0

Answer:

60000 square miles

Step-by-step explanation:

Step 1: Great lakes beginning with consonant: Huron, Michigan, Superior

Great lakes beginning with vowel: Ontario, Erie

Step 2: Estimate the areas to nearest thousand.

Estimation of area of Huron = 23000 square miles

Estimation of area of Michigan = 22000 square miles

Estimation of area of Superior = 32000 square miles

Total area of Great lakes beginning with a consonant = 23000 + 22000 + 32000 = 77000 square miles

Estimation of area of Ontario = 7000 square miles

Estimation of area of Erie = 10000 square miles

Total area of Great lakes beginning with a vowel = 7000 + 10000 = 17000 square miles

Step 3: Difference between the total area of Great lakes beginning with a consonant and the vowel

77000 – 17000 = 60000 square miles

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maria [59]

Answer:

He needs 16 ounces of raisins and 8 ounces of nuts

Step-by-step explanation:

Let

x -----> the number of ounces of raisins

y -----> the number of ounces of nuts

we know that

x+y=24 -----> equation A

x=2y -----> equation B

Solve the system by substitution

Substitute equation B in equation A and solve for y

(2y)+y=24

3y=24

y=8 ounces of nuts

Find the value of x

x=2(8)=16 ounces of raisins

therefore

He needs 16 ounces of raisins and 8 ounces of nuts

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2 years ago

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I need this problem solved real quick

PIT_PIT [208]

Let's take this problem step-by-step:

The ;unlabeled angle' adjacent to the 'outside angle of measure 78°'

⇒ is on a straight line

⇒ sum of angle measure = 180 degrees

$unlabeled_.angle+78 = 180\\unlabeled_.angle = 102$

Now we know:

⇒ sum of all angles in a triangle ⇒ 180°

Let's put that in equation form and solve:

$x + 102 + 57=180\\x + 159=180\\x = 21$

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Hope that helps!

#LearnwithBrainly

8 0

2 years ago

PLEASE HELP!

Mariana [72]

-----------------------------------------------
Information Given:
-----------------------------------------------
ON = 7x - 9
LM = 6x + 4
MN = x - 7
OL = 2y - 7

-----------------------------------------------
Since it is a parallelogram:
-----------------------------------------------
ON = LM and
MN = OL

-----------------------------------------------
ON = LM:
-----------------------------------------------
7x - 9 = 6x + 4

-----------------------------------------------
Subtract 6x from both sides:
-----------------------------------------------
x - 9 = 4

-----------------------------------------------
Add 9 to both sides:
-----------------------------------------------
x = 13

-----------------------------------------------
MN = OL:
-----------------------------------------------
x - 7 = 2y - 7

-----------------------------------------------
Sub x = 13:
-----------------------------------------------
13 - 7 = 2y - 7

-----------------------------------------------
Simplify:
-----------------------------------------------
6 = 2y - 7

-----------------------------------------------
Add 7 on both sides:
-----------------------------------------------
13 = 2y

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Divide by 2:
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y = 13/2

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Answer: x = 13, y = 13/2 (Answer D)
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3 years ago

How much money is needed to buy 1/4 pound of butter at $.92 a pound, 4 pounds of sugar at $.24 a pound, and 6 eggs at $.72 a doz

gayaneshka [121]

Answer:

E. None of these

Step-by-step explanation:

1/4 of a pound of butter costs $0.23

4 pound of sugar costs $0.96

6 eggs costs $0.36

Add those together, and you get $1.55

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Petrol and oil are mixed in the ratio 10/1 . How many litres of oil needed to mix with 5 litres of petrol?

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since 10petrols=1 oil

therefore 5petrols=1/2

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2 years ago

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