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jenyasd209 [6]
3 years ago
11

This school is making this sidewalk six times longer​

Mathematics
1 answer:
vovangra [49]3 years ago
4 0
The new length is 180 feet because 30x6 is 180 and the new area is 900 cubic feet
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Let a= x^2 +4. Rewrite the following equation in terms of a and set it equal to zero.
swat32

Answer:

C and G

Step-by-step explanation:

(x^2+4)^2+32=12x^2+48 is written as (x^2+4)^2+32=12x^2+48.

We can simplify the expression using the term a by replacing x^2 + 4 with a.

(x^2+4)^2+32=12x^2+48\\(x^2+4)^2+32=12(x^2+4)\\a^2 + 32 = 12a\\a^2 - 12a + 32 = 0

This factors into (a-4)(a-8). Solve by setting each factor equal to 0 and solve for a.

a-4 = 0                 a=4

a-8=0                   a=8

4 0
3 years ago
A project to build a new bridge seems to be going very well since the project is well ahead of schedule and costs seem to be run
Alecsey [184]

Answer:

Scheduled Variance = $850,000.00

Schedule Performance Index = 1.05

Cost Performance Index = 1.11

Step-by-step explanation:

Note: See the attached excel file for the calculations of Total Actual Cost to Date, Budgeted Cost of Work Scheduled (BCWS), and Budgeted Cost of Work Performed (BCWP).

From the attached excel file, we have:

Total Actual Cost to Date = $15,300,000

Total BCWS = $16,170,000

Total BCWP = $17,020,000

Therefore, we have:

Scheduled Variance = Total BCWP - Total BCWS = $17,020,000 - $16,170,000 = $850,000.00

Schedule Performance Index = Total BCWP / Total BCWS = $17,020,000 / $16,170,000 = 1.05

Cost Variance = Total BCWP - Total actual cost to date = $17,020,000 - $15,300,000 = $1,720,000

Cost Performance Index = Total BCWP / Total actual cost to date = $17,020,000 / $15,300,000 = 1.11

Download xlsx
7 0
3 years ago
I'VE BEEN WAITING FOR 3 HRS+ PLEASE HELP ME PLEASE!!!
goldfiish [28.3K]
Using Communative Property, We can switch the equation around to make it look the same.
6 0
3 years ago
Determine area under the standard normal curve given the z score, z less than 1.25
FromTheMoon [43]

Answer:

0.8944

Step-by-step explanation:

Use a calculator or table.

Using a z-score table:

P(z < 1.25) = 0.8944

7 0
3 years ago
Mrs. Grady surveyed 30 students, 11 of which said they liked basketball, 14 of which said they liked hockey, and 2 of which said
Fiesta28 [93]
A) 3
b) 25

Look at the picture that I attached for the steps.

6 0
3 years ago
Read 2 more answers
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