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fredd [130]
3 years ago
13

It is -9° now. The temperature will drop 5° in two hours. What will the

Mathematics
2 answers:
77julia77 [94]3 years ago
4 0

Hey!

----------------------------------------------

Solution:

If the temperature is -9 degrees now and it drops 5 degrees in two hours you just want to subtract.

-9 - 5 = -14 degrees

----------------------------------------------

Answer:

-14 degrees

----------------------------------------------

Hope This Helped! Good Luck!

liberstina [14]3 years ago
3 0

Answer:

-14°

Step-by-step explanation:

-9 - 5

-9 + (-5)

-14

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Could you help me to solve the problem below the cost for producing x items is 50x+300 and the revenue for selling x items is 90
s344n2d4d5 [400]

Answer:

Profit function: P(x) = -0.5x^2 + 40x - 300

profit of $50: x = 10 and x = 70

NOT possible to make a profit of $2,500, because maximum profit is $500

Step-by-step explanation:

(Assuming the correct revenue function is 90x−0.5x^2)

The cost function is given by:

C(x) = 50x + 300

And the revenue function is given by:

R(x) = 90x - 0.5x^2

The profit function is given by the revenue minus the cost, so we have:

P(x) = R(x) - C(x)

P(x) = 90x - 0.5x^2 - 50x - 300

P(x) = -0.5x^2 + 40x - 300

To find the points where the profit is $50, we use P(x) = 50 and then find the values of x:

50 = -0.5x^2 + 40x - 300

-0.5x^2 + 40x - 350 = 0

x^2 - 80x + 700 = 0

Using Bhaskara's formula, we have:

\Delta = b^2 - 4ac = (-80)^2 - 4*700 = 3600

x_1 = (-b + \sqrt{\Delta})/2a = (80 + 60)/2 = 70

x_2 = (-b - \sqrt{\Delta})/2a = (80 - 60)/2 = 10

So the values of x that give a profit of $50 are x = 10 and x = 70

To find if it's possible to make a profit of $2,500, we need to find the maximum profit, that is, the maximum of the function P(x).

The maximum value of P(x) is in the vertex. The x-coordinate of the vertex is given by:

x_v = -b/2a = 80/2 = 40

Using this value of x, we can find the maximum profit:

P(40) = -0.5(40)^2 + 40*40 - 300 = $500

The maximum profit is $500, so it is NOT possible to make a profit of $2,500.

3 0
3 years ago
Please I need actual help with these!!!! I will mark brainliest if right! Please don't answer if you don't know it!!(I will repo
MrMuchimi

Answer:

Step-by-step explanation:

first pic

Statement.                     Reasons

1. AC is congruent to     1.Given

  HF

2.BC is congruent to.     2. Given

FE

3. Measure angle ACB.   3. Right angles are congruent

is congruent to Measure

angle HFE

4. Triangle ABC is

congruent to Triangle HEF 4. SAS, side angle side

second pic

statement.                          reason

1.Angle K is congruent       1. Given

to angle M

2.KL equals ML.                  2. Given

3.Measure angle KLJ.         3.Vertical angles are congruent

is congruent to Measure

angle MLP

4Triangle JKL is congruent.  4. ASA, angle side angle

to triangle PML

third pic

statement.                    reason

1. Already stated.          1. Already stated

2 PT congruent to RS.   2. Given

3. Angle PQT congruent 3. Verticle angles are congruent

to Angle RQS

4. trianlge PQT is congruent to Triangle RQS.  4. ASA, angle side angle

( hope this helps! )

3 0
3 years ago
Read 2 more answers
I need the answer please
photoshop1234 [79]
It would first be 0.7 and then 1.1
4 0
3 years ago
Read 2 more answers
4 + x = 12 solve equation ///ASAP /// WILL MARK BRAINLIEST
Bess [88]

Answer:

Answer is 8.

Step-by-step explanation: 12-4=8 so 4+8=12

hoped this helped you

4 0
3 years ago
PLEASE HELPPPPP!!!! (answer in decimal)
kakasveta [241]

Answer:

\approx 0.482659

Step-by-step explanation:

The experimental probability is the chance of an event happening based on data, or rather the experiment results, and not on a theoretical calculation. In essence, a theoretical calculation can be described by the following formula:

\frac{desired}{total}

However, the experimental probability can be described with the following formula:

\frac{number\ of\ desired\ outcomes}{number\ of \ trials}

The number of trials is the sum of the number of outcomes. In this case, the desired outcome is tails. Therefore, the experimental probability can be described using the following formula:

\frac{tails}{total}

One can also rewrite the formula as the following. This is because the total is the sum of the number of the two outcomes:

\frac{tails}{heads+tails}

Substitute,

\frac{167}{167+179}

Simplify,

\frac{167}{346}

Rewrite as a decimal:

\approx 0.482659

4 0
3 years ago
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