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Svetradugi [14.3K]
3 years ago
14

Which expression can be used to solve the problem below? On a recent math test,

Mathematics
2 answers:
lora16 [44]3 years ago
3 0

Answer:

4

Step-by-step explanation:

Because she gets 3 per multiple choice question, so 3 times 18

she gets 5 per response question, so 5 times 6

lys-0071 [83]3 years ago
3 0
The expression you would use would be 4.
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What is the volume of the rectangular prism? 4 cm 4 cm 4 cm​
Stels [109]

Answer:

64cm^3

Step-by-step explanation:

4*4*4=64

7 0
3 years ago
John gave away 20% of his savings to Charlie he gave away $80 how much did John have in his savings. PLSSSS HEELPP​
ICE Princess25 [194]

Answer:

$400

Step-by-step explanation:

20% = 1/5

$80 x 5 = $400

7 0
2 years ago
Write The Number 12.1 As A Fraction Is simplest Form
musickatia [10]
12.1=12+0.1=12+\dfrac{1}{10}=\boxed{12\frac{1}{10}}
8 0
3 years ago
Two leprechauns are arguing over a pot of gold. The first leprechaun says to the other, ‘Give me seven of your gold pieces and I
Anvisha [2.4K]
Gold pieces the first leprechaun has: x
Gold pieces the second leprechaun has: y
<span>
The first leprechaun says to the other, ‘Give me seven of your gold pieces and I will have twice as many as you!’:
The first leprechaun would have x+7
The second leprechaun would have y-7
</span>I will have twice as many as you:
(1) x+7=2(y-7)
<span>(1) x+7=2y-14
(1) x+7-7-2y=2y-14-7-2y
(1) x-2y=-21

</span>The other one replies, ‘No way! Give me seven of yours and we’ll have the same number’
The first leprechaun would have x-7
The second leprechaun would have y+7
We’ll have the same number:
(2) x-7=y+7
(2) x-7+7-y=y+7+7-y
(2) x-y=14

<span>How many gold pieces does the first leprechaun have?
x=?
We have a system with 2 equations and two unknows (x and y). We need to solve for x:
(1) x-2y=-21
(2) x-y=14

Using the method of substitution, we can isolating y in the second equation:
(2) x-y=14
(2) x-y+y-14=14+y-14
(2) x-14=y
(2) y=x-14  

And we can replace y in the first equation by x-14, and solve for x: 
(1) x-2y=-21
(1) x-2(x-14)=-21
(1) x-2x+28=-21
(1) -x+28=-21
(1) -x+28-28=-21-28
(1) -x=-49
(1) (-1)*(-x=-49)
(1) x=49

Answer: T</span>he first leprechaun has 49 gold pieces

5 0
3 years ago
I was in the hospital and missed a whole lesson in math HELP ME PLZZZ
lukranit [14]

Answer:

1.5 inches

Step-by-step explanation:

Area of a square:

A = a²

Given:

A = 2.25

Find a:

A = a²

2.25 = a²

\sqrt{a^2} =\sqrt{2.25}

a = 1.5

4 0
3 years ago
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