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Andrei [34K]
3 years ago
11

Sandra tiles 5/4 square yards in 1/3 hour

Mathematics
1 answer:
jolli1 [7]3 years ago
6 0
Sandra lays 3.75 tiles in one hour 
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Antonette gets $70\%$ on a 10-problem test, $80\%$ on a 20-problem test and $90\%$ on a 30-problem test. If the three tests are
notka56 [123]

Answer:

Percentage score will be 83.33 %

Step-by-step explanation:

We have given Antonette gets 70 % on 10 problem test

Let consider here here total problem = total marks

So marks get 10 10 problem test = 10×0.7 = 7

Marks get in 20 problem test = 20×0.8 = 16

And marks get in 30 problem test = 30×0.9 = 27

Now total marks get get by Antonette = 7 +16 + 27 = 50

And total marks = 60

So percentage score of Antonette =\frac{50}{60}\times 100=83.33 %

8 0
3 years ago
The number of bacteria in a colony increases by 10% every 2 hours. What is the overall percent increase after 4 hours?
babymother [125]

The number of bacteria in a culture is increasing according to the law of exponential growth. There are 125 bacteria in the culture after 2 hours and 350 bacteria after 4 hours.

5 0
2 years ago
Given x=-3, y=6, and z=-4 -15+(-x)+y= Thank you for your help!
lesya692 [45]

Solution:

Given, x=-3, y=6, and z=4

Putting these values in the given equation:

-15+(-x)+y

= -15+(-(-3)+6

= -15+3+6

= -15+9

= -6

6 0
3 years ago
What is the value of x in the equation LaTeX: \frac{3}{2}\left(4x-2\right)-3x=5-\left(x+2\right) 3 2 ( 4 x − 2 ) − 3 x = 5 − ( x
Helen [10]

Answer:

3/2

Step-by-step explanation:

Given the equation 3/2(4x-2)-3x = 5-(x+2)

Open the parenthesis

3/2(4x) - 3/2(2) -3x = 5-x-2

6x-3-3x = 3-x

3x-3 = 3-x

Collect like terms

3x+x = 3+3

4x = 6

Divide both sides by

4x/4 = 6/4

x = 3/2

Hence the value of x is 3/2

6 0
3 years ago
Does anyone know this problem!! I need help asap!! #help
slamgirl [31]

Answer:

you times that by 7 I think

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
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