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nevsk [136]
3 years ago
13

Marisol buys 3 notebooks that each cost the same amount and 1 calculator that costs $9. The total cost is $21. How much does eac

h notebook cost?
Mathematics
2 answers:
adoni [48]3 years ago
4 0

Answer: 4 dollars for each notebook

Step-by-step explanation:

21-9= 12

12/3=4

each notebooks costs 4 dollars

kondaur [170]3 years ago
4 0

Answer:

$4

Step-by-step explanation:

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Find the value of x in the triangle shown below.
DIA [1.3K]

Answer:

x=8

Step-by-step explanation:

We can use the Pythagorean theorem to solve

a^2+b^2 = c^2  where a and b are the legs and c is the hypotenuse

6^2 + x^2 = 10^2

36 + x^2 = 100

Subtract 36 from each side

36-36 +x^2 = 100-36

x^2 = 64

Take the square root of each side

sqrt(x^2) = sqrt(64)

x = 8

7 0
3 years ago
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Write a division that represents the question: how many 3/8s are in 5/4?
Goryan [66]

Answer:

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8 0
3 years ago
Find the equation of the line through point (3,2) and perpendicular to 3x + 5y = 15
Vesnalui [34]

Answer:

y=5/3x-3

Step-by-step explanation:

first, let's put 3x+5y=15 into y=mx+b form

move 3x to the other side

5y=-3x+15

divide by 5

y=-3/5x+3

now, perendicular lines have slopes that are negative and reciprocal.

With our new equation we can automatically find the slope, which would be 5/3.

now, we need to find b

plug the points (3,2) into y=5/3x+b

2=5/3(3)+b

2=5+b

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so that means that our equation will now be

y=5/3x-3.

Hope this helps!

6 0
3 years ago
Amy, Dan and mike are competing in a cooking contest they all used different amounts of milk from a container holding 6 gallons
natka813 [3]

Answer: 0.14

Step-by-step explanation:

You had to convert the decimals into percentages move the decimal point two places to the left which makes 14% the answer

4 0
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Find the difference. 4ab2 − 3ab2
snow_lady [41]
<span>4ab^2 − 3ab^2 = ab^2
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3 years ago
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