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kenny6666 [7]
2 years ago
13

45 is 90% of what number?

Mathematics
2 answers:
HACTEHA [7]2 years ago
7 0
<span>X*90/100 =45
X =45*100/90
X =50
Number =50 </span>
kolezko [41]2 years ago
5 0
45 is 90% of 50. 45=.9x
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Sudha earns ` 189 in a day and Radha earns ` 112 in a day. About how much will each of them earn in 30 days
Mariulka [41]

Answer:

the sudha and radha earns 5,670 and 3,360 respectively

Step-by-step explanation:

Since in the question it is mentioned that

Sudha earns 189 in a day

And, radha earns 112 in a day

so in 30 days, sudha earns

= 189 × 30 days

= 5,670

And, radha earns

= 112 × 30 days

= 3,360

Therefore the sudha and radha earns 5,670 and 3,360 respectively

8 0
3 years ago
Can any kind soul help me ASAP!​
CaHeK987 [17]

Answer:

Hope it helps u

Step-by-step explanation:

As we know that ,

Mean = sum of the terms/ numbers of terms

But here grouped data is given so , we use the formula

Mean=∑[f. m]/ ∑f

where f is frequency and m is mid point of each height ,

Now first we have to find the mid point of each interval, where

midpoint of each interval = (lower boundary + upper boundary)/2

m1=(150+154)/2 = 152

m2=(155+159)/2= 157,now found other by same formula, for each interval

m3= 162

m4= 167

m5=172    Now we find the midpoint of each interval ,so now

∑[f. m]=f1*m1+f2*m2+f3*m3+f4*m4+f5*m5

now putting the values of each frequency for given interval and midpoint of each interval we will get,

∑[f. m]=456+942+1296+167*x+344 = 167*x+3038

Now find,

∑f=f1+f2+f3+f4+f5

∑f=19+x

Now we have,

∑[f. m]=167*x+3038

∑f=19+x

also given mean height=161.6 cm

putt these values in above equation we get,

161.6=\frac{167*x+3038}{19+x}

now solve this ,

161.6(19+x)=167*x+3038

3070.4+161.6*x=167*x+3038

3070.4-3038=167*x-161.6*x

32.4=5.4*x

x=32.4/5.4

<h2>x=6   Ans........</h2>

3 0
3 years ago
How many DVDs. A small independent movie company determines the profit P for producing n DVD copies of a recent release is P = −
Softa [21]

The company should produce "85" DVD's to maximize the profit.

According to the question,

The profit P for producing n DVD copies are

  • P=-0.02n^2+3.4n -16

Let,

  • The number of units be "n".

Now,

To find the minimize profit,

→ P'(n) = 0

→ -0.04n+3.4=0

By substracting "3.4" from both the sides, we get

→ -0.04n+3.4-3.4=-3.4

→                   -0.04n = -3.4

→                            n = \frac{-3.4}{-0.04}

→                            n = 85

Thus the answer above is right.

Learn more:

brainly.com/question/20862980

7 0
2 years ago
Four sisters buy a total of 3 1/2 feet of ribbon. The sisters want to share the ribbon equally.
vovangra [49]
3.5 divided by 4.
Each sister will receive 0.875 feet of ribbon.
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3 years ago
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Inessa [10]

Answer:

The kite is 47 inches long

4 0
3 years ago
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