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valina [46]
3 years ago
9

Cameron used 1 3|4 ounces of hydrochloric acid in one experiment. She used 2 3|8 ounces of the acid in a second experiment. How

much more acid did Cameron use in the second experiment?
Mathematics
1 answer:
kvv77 [185]3 years ago
3 0
The  easiest way to find answers for questions like these is to convert them to improper fractions, solve, and then convert them back to mixed numbers (if the question required it). When we convert these to improper fractions, we have 7/4 and 19/8. We can then find the least common denominator of the 2 so that we can solve. The least common denominator is 8, and since we are multiplying the 4 by 2 to get it there, we must also multiply the 7 by 2. Now we have 19/8-14/8. At this point, we can use simple subtraction to subtract the numerators and get 5/8.
To summarize, Cameron used 5/8 more acid in the second experiment.
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Please answer -24x + 16y
Alex787 [66]

Answer:

-8(3x-2y)

Step-by-step explanation:

Factor out each number because 8 times 3 equals 24

And -2 times -8 is 16

3 0
3 years ago
Two straight edges of a pizza slice meet at an angle of 30°. If the pizza has a radius of 12
melisa1 [442]

Answer:

<h3>area of the slice:      A = 12π in² ≈ 37.7 in² </h3><h3>lenght of its crust:  L = 24π in ≈ 6.28 in</h3>

Step-by-step explanation:

R = 12 in

360°:30° = 12

so the area of the slice is ¹/₁₂ of whole pizza

A = ¹/₁₂•πR² = ¹/₁₂•π•12•12 = 12π in² ≈ 37.7 in²

Crust is the perimeter of pizza so crust of the slice is ¹/₁₂ of the perimeter:

L = ¹/₁₂•2πR = ¹/₁₂•2π•12 = 2π in ≈ 6.28 in

8 0
3 years ago
SA scuba diver reached a depth of -14 feet (below
shtirl [24]

Answer:

+2 ft

Step-by-step explanation:

He descends -12 feet (negative descend is an ascend) so he ascends 12 feet

-14 + 12 = -2 so he needs to travel 2ft

3 0
3 years ago
Read 2 more answers
Which is the right answer?????
trapecia [35]

Answer:

Angle ABC = 58

_________________

These two angles are opposite but meet at the same vertex. This means that they are equal to each other. To solve the equation below, isolate the variable and you have your answer!

3x - 14 = 2x + 10

-2x          -2x

x - 14 = 10

  +14   +14

x = 24

Angle ABC

3(24) - 14 = ?

72 - 14 = 58

5 0
3 years ago
B=?<br> Angle A=?<br> Angle B=?
babunello [35]

1.) Solve for length b.

The simpler method is to use the Pythagorean theorem. If a^2 - b^2 = c^2, then this means that c^2 - a^2 = b^2.

Plug in the values:

11^2 - 7^2 = b^2

--> 121 - 49 = 72

So this means that b is the square root of 72, which is 8.49

2.) Solve for ∠A.

Let's refer to the law of sines. If \frac{a}{sin(A)} = \frac{c}{sin(C)}, then this means we can cross multiply. Since A is the value we are solving for, the equation should be written out like this:

A = sin^-1(\frac{sin(C) * a}{c})

--> A = sin^-1(\frac{sin(90) * 7}{11})

A is 39.52°

3.) Solve for ∠B.

This is the easiest one. The sum of all three angle measures in a triangle add up to 180°. We already know that one of the angles is a right angle and the other 39.52°.

39.52 + 90 = 129.52

180 - 129.52 = 50.48

∠B is 50.48°.

6 0
3 years ago
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