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Leni [432]
2 years ago
10

3 + 2 x 7 - 30(^2) help me

Mathematics
1 answer:
shepuryov [24]2 years ago
3 0
There is no solution to this problem. Why? Well, see below for an explanation!

We can initially solve this problem using PEMDAS. Where we go wrong will be identified later. The P stands for Parenthesis, but there are none in this equation so we can skip that step. Next is E, which stands for Exponents. We do have an exponent, but it is separate from the problem. That would deem the problem invalid to solve because there is no base number for the exponent to be solved. Disregarding the exponent, we can solve by using M, which means Multiplication.

2 x 7 = 14

Next step, we can simplify to make the equation a tad bit neater.

3 + 14 - 30

Next up is D, meaning we need to divide. There are no numbers to divide though, so this step can be skipped.

Next step would be A, meaning we need to add.
3 + 14 = 17

Next step, we can simplify to make the equation neater as stated above.

17 - 30

17 - 30 = -13.

Disregarding the exponent, your answer would be -13. Including the exponent, however, would make the equation irrelevant. If you need extra help understanding this, let me know and I will gladly assist you.
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A+B = ?<br>A.257<br>B.267<br>C.524<br>D.526​
SVEN [57.7K]

Answer:

C. 524.

Step-by-step explanation:

a=0.5(251+263)=257;

b=0.5*(263+271)=267;

a+b=257+267=524.

8 0
3 years ago
Veronica has received a $3,000 gift and is looking for a bank to start a savings account. Which option would be the best for her
Anarel [89]

Answer:

B Is your answer

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3 years ago
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A printer needs to make a poster that will have a total of 500 cm2 that will have 3 cm margins on the sides and 2 cm margins on
goblinko [34]

Answer:

The largest printed area is 381.43 cm^2 .

Step-by-step explanation:

The width of the full poster = 500/x

Length of the printed area = l =x - 4

Width of the printed area = w = (500/x) - 2

Area of the printed space = (x - 4) × ((500/x) - 2)

Now, take derivative of the area

A' = (x - 4)×(-500/x^2) + ((500/x) - 2)

A' = (2000/x^2) - 2

A' = (2000-2x^2) / x^2

put derivative equal to zero like A' = 0

(2000-2x^2) / x^2 = 0

2000 = 2x^2

x^2 = 1000

x = 31.62

So, the length of the original poster is = x = 31.62 cm

The width of the full poster = 500/x = 15.81 cm

l = x - 4 = 27.62

w = 500/x - 2 = 13.81

Therefore, The area of space available for printing is = l × w

= 27.62 × 13.81 = 381.43 cm^2 .

5 0
3 years ago
Help me plss plss I really need help I have a f
Colt1911 [192]

Answer:

A. 5 1/2 and D. 11/2

Step-by-step explanation:

Make improper fraction

8*1+3=11/8

Solve by multiplying:

4*11/8

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Simplified is 11/2

We can turn it back into a mixed number

2*5+1=11 so 5 1/2

6 0
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Perform the indicated operations:
Damm [24]

Answer:

A= -40

B= 16

C= 40

D= 50

Step-by-step explanation:

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