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Zinaida [17]
2 years ago
15

Anwer pls pls pls the correct​

Mathematics
2 answers:
navik [9.2K]2 years ago
7 0

Answer:

2.5, - 1200

Step-by-step explanation:

(a)

Substitute the given values into the expression

\frac{2a}{c} = \frac{2(-5)}{-4} = \frac{-10}{-4} = \frac{10}{4} = \frac{5}{2} = 2.5

(b)

2a × b × 5c

= 10abc

= 10 × - 5 × - 6 × - 4

= - 50 × 24

= - 1200

fomenos2 years ago
5 0

Answer:

a)2.5 b)-1200

Step-by-step explanation:

a)2(-5)/4=-10/-4=5/2=2.5

b)2(-5)×(-6)×5(-4)=-10×-6×-20=-1200

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Joan went to the bookstore. At
kiruha [24]

Answer:

\frac{1}{4} of the books in the book store are mystery fiction books.

Step-by-step explanation:

Let x represent all the books in the books store.

Then, the fraction of books that are fiction books is \frac{3}{4}x

We have that; \frac{1}{3} of the fiction books are mystery books.

The fraction of the books at the  bookstore that are mystery fiction  books is \frac{1}{3}\times \frac{3}{4}x=\frac{1}{4}x.

Therefore \frac{1}{4} of the books in the bookstore are mystery fiction books.

8 0
3 years ago
You flip 3 coins. Is the probability of obtaining 2 heads and 1 tail in any order the same as the probability of obtaining a hea
konstantin123 [22]

Answer:

the probability of obtaining 2 heads and 1 tail in any order is higher than the probability of obtaining a head, than a head then a tail

Step-by-step explanation:

since the probability (p) of obtaining 2 head and 1 tail in any order is

P1 = p of obtaining ( H , H ,T) + p of obtaining ( H , T ,H ) + p of obtaining ( T , H ,H ) = 3*p of obtaining ( H , T ,H)

assuming a fair coin then p heads = p tails = 0.5

thus since each flip is independent from the others

p( H , H ,T)=p( H , T ,H )= p( T , H ,H )= P=0.5*0.5*0.5= 1/8

thus P1 =3*1/8=3/8

while the probability of obtaining a head, than a head then a tail is

P2= p of obtaining ( H , T ,H)= 1/8

then P1=3/8 >P2=1(8

therefore the probability of obtaining 2 heads and 1 tail in any order is higher than the probability of obtaining a head, than a head then a tail

6 0
3 years ago
Khloe has 28 coins in her collection. That is five more than kourntey has. How many does kourtney have?
AnnyKZ [126]

28 is five more than 23

7 0
2 years ago
Read 2 more answers
Please only give me the check from numbers 1 to 5
Marizza181 [45]

Answer:

1) f=30

2) w=21

3) x=72

4) t=12

5) y=6

4 0
2 years ago
10 3/9- 10 2/5 Im to lazy to do it please help me out.
coldgirl [10]

Answer:

\boxed{ \ -  \frac{3}{45} }

Step-by-step explanation:

10 3/9 - 10 2/5

we need to convert mixed fractions to improper fractions

10 \frac{3}{9}  =  \frac{10 \times 9 + 3}{9}  =  \frac{93}{9}

10 \frac{2}{5}  =  \frac{10 \times 5 + 2}{5}  =  \frac{52}{5}

Now, we have 93/9 - 52/5

We need to equate the denominators, before subtracting them.

\frac{93}{9}  -  \frac{52}{5}  =  \frac{93 \times 5}{45}  -  \frac{52 \times 9}{45}

\frac{465}{45}  -  \frac{468}{45}

\frac{ - 3}{45}

\boxed{ -  \frac{3}{45} }

The result of 10 3/9- 10 2/5 is - 3/45

8 0
2 years ago
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