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ExtremeBDS [4]
3 years ago
5

A boy has 10 cookies his sister has 2.5 times as many how many does his sister have

Mathematics
1 answer:
umka2103 [35]3 years ago
8 0

His sister has 10*2,5=25 cookies

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Determine the value of the variable that makes the equation true. 12-b=12.5
dusya [7]

Answer:

B = -.5

Step-by-step explanation:

If B is negative is cancels out the prexisting negative making it positive.

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2 years ago
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Answer:

y=2x+4

Step-by-step explanation:

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7 0
2 years ago
Can someone please explain
ankoles [38]
Start by defining variables (things you don't know). Let's make:
t = number of true/false questions
m = number of multiple choice questions

Equation #1
total questions on the test (given to be 20) is then:
t + m = 20

Equation #2
Multiply the number of questions by the points it's worth to get the total points
3t + 11m = 100

Now, you can use substitution to combine the two equations.

t + m = 20
by subtracting m from both sides, equation 1# becomes..
t = 20 - m

substitute t for 20 - m in the second equation.
3(20 - m) + 11m = 100

Solve for m.
3(20 - m) + 11m = 100
60 - 3m + 11m = 100
8m = 100 - 60
8m = 40
m = 5

There are 5 multiple choice questions on the test.
Now use this to find t.
t + m = 20 
t + 5 = 20
t = 20 - 5
t = 15

there are 15 true/false questions on the test.
7 0
2 years ago
240 people are going to a charity event. 3/5 of the guests have ordered chicken for their meals. Of the remaining guests, 12.5%
fiasKO [112]

Answer:

84

Step-by-step explanation:

5 0
2 years ago
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