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3 years ago

9

Sam buys one bag of flour for $2.50, three packages of shredded cheese for $3.00 each, and two packages of mushrooms for $3.50 e

ach. How much does Sam pay in all

1 answer:

sashaice [31]3 years ago

5 0

Answer:

here

Step-by-step explanation:

3.00 x 3 = 9.00

3.50 x 2 =7.00

9.00+7.00+2.50= 18.50

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Find the value(s) of k such that 4x² + kx + 4 = 0 has 1 rational solution

Blababa [14]

Answer:

If you mean only one rational solution, the answer is

$k_1 = 8, k_2 = -8$

If you mean at least 1 rational solution, the answer is

$k\in (-\infty, -8]\cup[8, \infty)$

Step-by-step explanation:

$4x^2 + kx + 4 = 0$

Let's calculate the discriminant.

$\Delta = b^2 - 4ac$

$\Delta = k^2 -4 \cdot 4 \cdot 4$

$\Delta = k^2 -64$

Now, remember that:

$\text{If } \Delta > 0 : \text{2 Real solutions}$

$\text{If } \Delta = 0 : \text{1 Real solution}$

$\text{If } \Delta < 0 : \text{No Real solution}$

Therefore, I will just consider the first two cases.

$k^2 - 64 > 0$

and

$k^2 -64 = 0$

$\boxed{\text{For } k^2 - 64 > 0}$

$k^2 > 64 \Longleftrightarrow k>\pm\sqrt{64} \Longleftrightarrow k\in (-\infty, -8)\cup(8, \infty)$

$\boxed{\text{For } k^2 - 64 = 0}$

$k^2 = 64 \Longleftrightarrow k=\pm\sqrt{64} \implies k_1 = 8, k_2 = -8$

7 0

3 years ago

Blanca jogged 8 days last month. She jogged 1.25 miles on each of these days and burned 140 calories per mile while jogging.

Marat540 [252]

Answer: 1,400 calories

Bianca jogged 1.25 miles per day for 8 days. so 1.25*8 would equal 10 miles.

Since she jogged 10 miles and burned 140 calories per mile, if we multiply 10*140, we would get 1,400.

So last month, she lost 1,400 calories.

6 0

3 years ago

(2x^5 + 7x^3) - (5x^2 - 4x^3)

jeyben [28]

Answer:

2x^5 + 7x^3 - 5x^2 + 4x^3

Simplify:

2x^5 + 11x^3 - 5x^2

8 0

3 years ago

Read 2 more answers

Can someone please tell me what to do for this?? Thank you :))

bezimeni [28]

take it and leave it somewhere u will forget about it and move on with ur life lol

5 0

3 years ago

Which one is bigger?

Alex777 [14]

Answer:

B

Step-by-step explanation:

$\frac{4}{5} ^{2}$ = 0.64

$\frac{3}{5} / \frac{4}{5}$ = 0.75

Therefore, the answer is B.

Hope this helps!

3 0

2 years ago