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Gnesinka [82]
3 years ago
15

How do I do this? It's about systems of equations.

Mathematics
1 answer:
earnstyle [38]3 years ago
5 0

Answer:

D.

Step-by-step explanation:

The last one has the correct variables and amounts in the right order.

12x + 9y = 120

6x + 14y = 136

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a pay for service internet company charges 5 per hour for the first 3 hours of Service Plus a $10 connection fee
Marysya12 [62]

If you are charging 5 per hour  use h to determine how many hours and add 10 for the connection fee

5h+10

3 0
4 years ago
Find the simple interest on $2,219 principal, deposited for 6 years at a rate of 1.91%
Aleks04 [339]

Answer:

$13,568.30

Step-by-step explanation:

I = Prt

I = 2,219(1.0191)(6) = 13,568.30

6 0
3 years ago
​claim: the mean pulse rate​ (in beats per​ minute) of adult males is equal to 6969 bpm. for a random sample of 125125 adult​ ma
RoseWind [281]

Answer:

t=0.21

Step-by-step explanation:

Given  \bar x=69.2, s=10.9, n=125and a population mean \mu=69.

#We state our hypothesis as:

H_o:\mu=69\\\\H_a:\mu\neq 69

The evidence available should validate either the null or alternative hypothesis.

#We calculate the test statistic as:

t=\frac{\bar x-\mu_}{s/\sqrt{n}}\\\\\\=\frac{69.2-69}{10.9/\sqrt{125}}\\\\\\=0.2051

\approx0.21

Hence, the test statistic is t=0.21

4 0
3 years ago
Rewrite the following quadratic functions in intercept or factored form. Show your work.
Vlad [161]

Answer:

y = (2x + 3)(2x + 3) = (2x + 3)²

Step-by-step explanation:

We are given a quadratic function and we have to write it in factored form.

y = 9 + 12x + 4x²

y = 4x² + 12x + 9

We can break the mid-term in such a way that when they are multiplied, the factors give a product of 36x² and when added, they give a result of 12x, as show below:

y = 4x² + 6x + 6x + 9

Taking 2x common from the first two variables and 3 from the second two

y = 2x(2x + 3) + 3(2x + 3)

Taking 2x+3 common

y = (2x + 3)(2x + 3) = (2x + 3)²

3 0
3 years ago
Read 2 more answers
Help pls me on the math question
bija089 [108]

Answer:

COULD YOU PLZ GIVE ME THE QUESTION. SO I CAN HELP YOU .

3 0
4 years ago
Read 2 more answers
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