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3 years ago

Maria has a monthly cell phone plan that has a fixed

Mathematics

1 answer:

olasank [31]3 years ago

4 0

Answer:

Step-by-step explanation:

We can subtract the fixed 12 of 40 to see how much she can spend on messages alone. So we are left with $28.

At 10 cents apiece for every dollar she can send 10. So we would get 280 messages.

I dont understand the options given, I think there are equation signs missing

So it would be B I assume since x=280

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Find BC if segment AD is an altitude of triangle ABC PLEASE HELP

Vedmedyk [2.9K]

Answer:

BC = 96

Step-by-step explanation:

Since AD is an altitude, then ∠ ADC = 90° , thus

4x + 10 = 90 ( subtract 10 from both sides )

4x = 80 ( divide both sides by 4 )

x = 20

Thus

BC = BD + DC

= 2x + 3x - 4

= 5x - 4

= 5(20) - 4 = 100 - 4 = 96

3 0

3 years ago

Solve. 3/4 + ( 1/3 ÷ 1/6 ) - ( -1/2 ) = A. 3/4 B. 2 1/4 C. 1 3/4 D. 3 1/4

Mandarinka [93]

Answer:

3.25

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

.Part D. Analyze the residuals.

pentagon [3]

Answer:

5 is the answer for your question

7 0

3 years ago

Which expression is equivalent to (4+3i)^2+(6-I)^2

zhenek [66]

Answer:

$\large\boxed{(4+3i)^2+(6-i)^2=42+12i}$

Step-by-step explanation:

$(4+3i)^2+(6-i)^2\qquad\text{use}\ (a\pm b)^2=a^2\pm2ab+b^2\\\\=4^2+2(4)(3i)+(3i)^2+6^2-2(6)(i)+i^2\\\\=16+24i+9i^2+36-12i+i^2\qquad i=\sqrt{-1}\to i^2=-1\\\\=16+24i+9(-1)+36-12i+(-1)\\\\=16+24i-9+36-12i-1\qquad\text{combine like terms}\\\\=(16-9+36-1)+(24i-12i)\\\\=42+12i$

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4 years ago

Steven has $25 dollars to spend. He spent $10.81, including tax, to buy a new DVD. He needs to save $10.00 but he wants to buy a

Yuliya22 [10]

(25 - 10.81) - 1.38p = 10

p = package of peanuts

25 - 10.81 = 14.19

14.19 - 1.38p = 10

Subtract 14.19 from each side

10 - 14.19 = -4.19

-1.38p = -4.19

Divide both sides by -1.38

p = 3 (roughly, but because you can only buy the whole package, this is the amount you can buy)

He can buy a maximum of 3 packages of peanuts.

6 0

3 years ago