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Bingel [31]
3 years ago
10

What’s the answer to this question please answer ASAP.

Mathematics
2 answers:
timurjin [86]3 years ago
7 0

Answer:

8 because

Step-by-step explanation:


MrMuchimi3 years ago
3 0

Hello from MrBillDoesMath!

Answer:

-3


Discussion:

First observe that 4 is a common denominator of each fraction:


-5 1/2  +  6 3/4   - 4 1/4 =          (convert 1/2 = 2/4)

-5 2/4 + 6 3/4 - 4 1/4   =

(-5 + 6 - 4 ) + ( -2/4 + 3/4 - 1/4) =

(1 - 4 )        + (-3/4 + 3/4) =

-3 + (0) =

-3


Thank you,

MrB

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Two bags of cement and three bags of sand weigh 68 lbs. Three bags of sand weigh 60 lbs. All bags of cement weigh the same and a
madam [21]

Answer: 4:20

Step-by-step explanation:

60 lbs can be divided into three groups, in this case the bags of sand, so 60 divided by 3 is 20.

Now you have the 8 lbs left. It gets divided into two groups/bags so you would do 8 divided by 2 is 4.

Then for your ratio it is cement to sand which is 4:20. You can write the ratio however way you want or what is required by the question.(fraction bar, ‘to’, or colon ‘:’ )

Hope this helps!

6 0
3 years ago
3 1/5 ÷(z− 1/2 )=2 2/3 ÷(z+ 1/3 )
love history [14]

Answer:

10

Step-by-step explanation:

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5 0
3 years ago
Read 2 more answers
Solve the equation 4/8y=8/3 for y
Solnce55 [7]

Answer:

y = \frac{16}{3}

Step-by-step explanation:

In order to solve for y, you need to isolate the y in the equation. Thus, to get rid of the \frac{4}{8} multiplied by the y, multiply both sides by the reciprocal, \frac{8}{4}. Then, reduce the fraction.

\frac{4}{8} y = \frac{8}{3} \\(\frac{8}{4} )\frac{4}{8} y = \frac{8}{3} (\frac{8}{4})\\y = \frac{64}{12} \\y = \frac{16}{3}

Thus, y = \frac{16}{3}.

6 0
3 years ago
You're supposed to simplify these, but for the last one, isn't it simplified enough?
dusya [7]
It can be simplified more: ab^11
3 0
3 years ago
Suppose a simple random sample of size nequals49 is obtained from a population with mu equals 78 and sigma equals 28.
VLD [36.1K]

Answer:

0.0735,0.0179,0.7026

Step-by-step explanation:

Given that a simple random sample of size nequals 49 is obtained from a population with mu equals 78 and sigma equals 28.

Sample size = 49

Population mean = 78

Population std deviation = 28

Std error of sample mean = \frac{\sigma}{\sqrt{n} } \\=4

a) \bar x: N(78, 4)

b) P(\bar x >83.8)\\=0.0735

(by converting to Z and finding value from Z table)

c) P (x overbar less than or equals 69.6 )​

=P(\bar x \leq 69.6)\\=0.0179

d) P (75.8 less than x overbar less than 88 )

=P(75.8

4 0
4 years ago
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