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3 years ago

Evaluate the expression: [(7 x 6) + 15]2 + 8

Mathematics

2 answers:

Fiesta28 [93]3 years ago

7 0

[(7 x 6) + 15]2 + 8
(42+15)2+8

57*2+8
114+8
122

HOPE THIS HELPS!!

SashulF [63]3 years ago

7 0

Well, the total of everything once added and multiplied would be 67. Hope this helps you! :)

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A bulletin board measuring 28 dm long was divided among three subject areas in the ratio 2:2:3. How much space was alothed for e

Sphinxa [80]

Answer: Space was alloted for each subject is 8 dm, 8 dm, 12 dm.

Explanation:

Since we have given the length of bulletin board =28 dm

Let the share of three subject areas be 2x,2x,3x

According to question,

$2x+2x+3x=28\\7x=28\\x=\frac{28}{7}\\x=4dm$

so x=4 dm

Now,

Space was alloted for each subject is given as below:

First subject = $2x=2\times 4=8 dm$

Second subject = $2x=2\times 4=8 dm$

Third subject = $3x=3\times 4=12 dm$

4 0

3 years ago

Plz Help! Need to get through assignment and move on to other lessons.

emmasim [6.3K]

Where is the question

5 0

3 years ago

Write a linear function ff with f(4)=−3f(4)=−3 and f(0)=−2f(0)=−2

Nonamiya [84]

The line goes through the points (4,-3) and (0,-2), so its gradient is (-2-(-3))/(0-4) = -1/4. The y-intercept is -2 because f(0)=-2. So the equation of the line is y = -1/4 x - 2.This can be represented by the linear function f(x) = (-1/4)x - 2. The composite function ff is given by ff(x) = f(-1/4 x - 2) = (-1/4)((-1/4)x - 2) - 2 = x/16 - 3/2.

7 0

3 years ago

Solve plss -8r + 12 = 36

liubo4ka [24]

-8r + 12 = 36

- 8 r = 36 - 12

- 8r = 24

8r = - 24

r = - 24 / 8

r = - 3

4 0

2 years ago

Read 2 more answers

6. Michael Johnson holds the Olympic record for the men's 400m race at 43 seconds. His

vlada-n [284]

The difference between both unit rates rounded off to the nearest tenth is: 0.4 meters per second

Step-by-step explanation:

We have to calculate his unit rate for both type of races

So,

Unit rate for 400m race:

Distance = 400m

Time = 43 sec

$Unit\ rate = U_1= \frac{Distance}{Time}\\=\frac{400}{43}\\=9.30\ meters\ per\ second$

Unit rate for 300m Race:

Distance = 300m

Time = 31 sec

$Unit\ Rate= U_2=\frac{300}{31}\\=9.68\ meters\ per\ second$

The difference between both unit rates is:

$U_2-U_1 = 9.68-9.30\\=0.38 => 0.4\ meters\ per\ sec$

Hence,

The difference between both unit rates rounded off to the nearest tenth is: 0.4 meters per second

Keywords: Unit rate, Speed

Learn more about unit rate at:

#LearnwithBrainly

7 0

3 years ago