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frez [133]
2 years ago
7

simplify: 7r + 10 - 2(2r + 3s - 5t) + 2(4s - t) + 5?

Mathematics
2 answers:
Rudik [331]2 years ago
8 0

Answer:

3+2+8+15

Step-by-step explanation:

it's right, trust me

tatuchka [14]2 years ago
5 0

Answer:

3r + 2s + 8t + 15

Step-by-step explanation:

7r + 10 - 2(2r + 3s - 5t) + 2(4s - t) + 5

=  > 7r + 10 - 4r - 6s + 10t + 8s   -  2t + 5

=  > 7r - 4r + 8s - 6s + 10t - 2t + 10 + 5

=  > 3r + 2s + 8t + 15

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Solve for b2 in A = 1/2 h ( b1 + b2 ), if A = 16, h = 4, and b1 = 3.
Katarina [22]

Hello from MrBillDoesMath!

Answer:

b2 = 5  


Discussion:

A = 1/2 h (b1 + b2) .

Substituting A = 16, h = 4, and b1=3 in the above formula gives:

16 = (1/2) (4)( 3 + b2)    =>         (as (1/2)4 = 2) )

16 = 2 ( 3 + b2)             =>         (divide both sides by 2)

8 = (3 + b2)                   =>         (subtract 3 from both sides)

8-3  = b2                       =>

5     =  b2


Check Area formula:

Does A = 16 = (1/2)(4)(3+5)   ?

Does 16 = (1/2) (4)(8)             ?

Does 16 = (1/2)(32)                ?  Yes it does so our calculation for b2 is correct




Thank you,

MrB

7 0
2 years ago
What is the greatest common factor of 64 and 72
erastova [34]
8 is the gcf of 64 and 72

3 0
2 years ago
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A factory packed 9600kg of flour in to small bags and large bags. Each small bag contained 3kg of flour and each large bag conta
yawa3891 [41]

Answer:

696 large bags of flour were packed.

Step-by-step explanation:

Let large bags of flour be 'y'

Let small bags of flour be 'x'. That is x=2040 (according to the question)

(3 \times x) + (5 \times y) = 9600

(3 \times 2040) + ( 5 \times y) = 9600

(6120) + (5 \times x) = 9600

(5 \times x) = 9600 - 6120

(5 \times x) = 3480

x = 3480  \div 5

x = 696

HOPE IT HELPS

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A 100 ft. building casts a 300 ft. Shadow from the sun. What is the angle of depression?
Usimov [2.4K]

It is 838

Step-by-step explanation:

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3 years ago
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Lina20 [59]

Answer : B x 1 2 3 4 y 3.2 6.4 9.6 12.8

WE analyze the first option A

x -- y -- Difference

8 -- 20

9 -- 22.5 -- 2.5

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11 -- 27.5 -- 2.5

From the first function we can see there is a constant difference of 2.5.

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x -- y -- Difference

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3.2 is the greatest

So second function B has the greatest constant of variation.

4 0
2 years ago
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