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sp2606 [1]
2 years ago
9

To predict volcanic eruptions scientists may use a seismograph to detect small earthquakes out of the 169 active volcanoes in th

e U.S. about 130 are in Alaska. About how many active U.S. volcanoes are not is Alaska?
Mathematics
2 answers:
UNO [17]2 years ago
8 0

Answer:

39 active volcanoes.

Step-by-step explanation:

Subtract 169 (whole) from 130 (part). 9 - 0 = 9, 6 - 3 = 3, and 1 - 1 = 0. Therefore, 169 - 130 = 39

slava [35]2 years ago
6 0
39 (169-130) - a simple subtraction
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Sven got money for his birthday. He spent $12 of the money and now has $28 left. Write and solve an equation to find out how muc
Dennis_Churaev [7]

Answer:

Equation

28  =  X - 12

Solve for X

Isolate the X

28+12 = X

40 = X

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
3 2/4 pieces f cake after party eats 1 /2/3 next night how much does she have left
xz_007 [3.2K]
The person has 1 5/6 cake left because 3 2/4 - 1 2/3 = 1 5/6! Hope this helps ^0^

Explanation 
Rewriting Expression in different parts.
= 3 + 2/4 + 1 + 2/3.

Solving The Whole Number Parts.
3 + 1 = 4

Solving The Fraction Parts.
2/4 + 2/3 = ?

Find the LCD of 2/3 and 2/4 and Rewrite to solve with equivalent Fractions.
LCD = 12

6/12 + 8/12 = 14/12

Simplify the Fraction Part.
14/12 = 7/6

Simplify The Fraction Part Again.
7/6 = 1 1/6

Combining The Whole Numbers With The Fractions.
4 + 1 + 1/6 = 5 1/6 

Hope this helps ^0^! ;D
8 0
4 years ago
Find the value of x in the equation x⁄ 4 + x⁄14 + x⁄17 = 71
Eva8 [605]

Answer:

x = 186  130/181

Step-by-step explanation:

x⁄ 4 + x⁄14 + x⁄17 = 71

119x/476 + 34x/476 + 34x/476 = 71

181x/476 = 71

x = 186 130/181

7 0
4 years ago
Read 2 more answers
The Mulder Farm has 600 acres of land allotted for raising corn and wheat. The cost to cultivate corn is $40 per acre. The cost
FrozenT [24]

Answer: Corn = 200 acres

Wheat= 400 acres

Step-by-step explanation:

Let the number of acres of corn = c

Let the number of acres of wheat = w

The Mulder Farm has 600 acres of land allotted for raising corn and wheat. This will be:

c + w = 600

c = 600 - w

Cultivation cost equals:

= 40c + 25w = 18000

Since c = 600 - w, we slot it into the equation

40c + 25w = 18000

40(600 - w) + 25w = 18000

24000 - 40w + 25w = 18000

Collect like terms

24000 - 18000 = 40w - 25w

6000 = 15w

w = 6000/15

w= 400

400 acres of wheat will be planted

Since c + w = 600

c = 600 - 400

c = 200

200 acres of corn should be planted

4 0
3 years ago
I really need a math tutor can anyone help?
valentina_108 [34]

Answer:

Sure... I can help with some questions!

Step-by-step explanation:

3 0
3 years ago
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