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Alika [10]
3 years ago
9

I need help with 10,11,12

Mathematics
2 answers:
Alika [10]3 years ago
8 0
There is a formula u can use to solve all of these problems.
percent formula : is/of = %/100

50 is x% of 300
is = 50
of = 300
% = x
now sub

50/300 = x/100
cross multiply
(300)(x) = (50)(100)
300x = 5000
x = 5000/300
x = 16.67%

use the same formula for the other questions.
35% of 150 is x

is = x
of = 150
% = 35

x/150 = 35/100
cross multiply
(100)(x) = (35)(150)
100x = 5250
x = 5250/100
x = 52.5 <==

x is 200% of 40
is = x
of = 40
% = 200

x/40 = 200/100
cross multiply
(100)(x) = (40)(200)
100x = 8000
x = 8000/100
x = 80



pshichka [43]3 years ago
3 0
10. 50 is roughly around ~16% of 300. (16% is 50.1)

11. 35% of 150 would be 52.5

12. 80 is 200% of 40

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Distance between (-6, -2) and (0,-1)
s344n2d4d5 [400]

Hey there! I'm happy to help!

To find the distance between two points, you square the difference of the x-values and square the difference of the y-values, add them, and then you square root it!

First, we'll add our two x-values.

-6-0= -6

We square it, which means to multiply it by itself.

-6(-6)=36        (If you multiply an even number of negative numbers, your answer is positive. Since we have two negative numbers, we get positive 36)

Now, we do the same with the y-values.

-2-(-1)=-1           (two negatives make it a plus, as in minus minus 1 is plus one.)

We square it.

-1(-1)=1              

Now, we add these x and y value differences.

36+1=37

Now, we find the square root using a calculator.

√37≈6.08

Have a wonderful day!

5 0
2 years ago
Pwease help me anyone. thanks :-) :-) :-) :-) :-) :-) :-) :-)!!!!
adell [148]
A)
x+3

b)
x(x+3)=340\\&#10;x^2+3x-340=0

c)
x(x+3)=340\\ x^2+3x-340=0\\&#10;\Delta=3^2-4\cdot1\cdot(-340)=9+1360=1369\\\sqrt{\Delta}=37\\&#10;x_1=\dfrac{-3-37}{2}=-20\\&#10;x_2=\dfrac{-3+37}{2}=17

It's 17.
3 0
3 years ago
A set of data items is normally distributed with a mean of 400 and a standard deviation of 60. Find the data item in this distri
Softa [21]

Answer:

The data item is X = 580

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 400 and a standard deviation of 60.

This means that \mu = 400, \sigma = 60

z=3

We have to find X when Z = 3. So

Z = \frac{X - \mu}{\sigma}

3 = \frac{X - 400}{60}

X - 400 = 3*60

X = 580

The data item is X = 580

6 0
3 years ago
INSTRUCTIONS<br> Solve the division problems<br> Name
skad [1K]

Answer:

13

Step-by-step explanation:

Do the divison! :D It's hard to write out on here, but you can find a lot of other online resources on how to do it, I reccomend Khan Academy.

5 0
2 years ago
Please help me correct answer if you said it correct I will give you brainlist please!​
oee [108]
The answer would be 5 like they said
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