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lions [1.4K]
3 years ago
8

Evaluate. Use Order of Operations. 2^3 + 4 x 2 - 7 A. 1 B. 9 C. 13 D. 36

Mathematics
1 answer:
horsena [70]3 years ago
8 0

Answer:

B.9

Step-by-step explanation:

Order of Operations:

Exponent, Parenthesis, Multiply/Divide, Add/Subtract

Thus, we do 2^3 first, then 4x2, and finally -7

(8)+(8)-(7)

=9

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The inequality 9/5C + 32 <-40 can be used to find Celsius temperatures that are less than -40 Fahrenheit. What is the solutio
Blababa [14]

The solution of inequality is C < -40

<em><u>Solution:</u></em>

Given that the inequality that is used to find the celsius temperature that are less than -40 fahrenheit

To find: solution of inequality

<em><u>Given inequality is:</u></em>

\frac{9}{5}C + 32 < -40

So we have to solve the above inequality for C

\rightarrow \frac{9}{5}C + 32 < -40

Add -32 on both sides

\rightarrow \frac{9}{5}C + 32 -32 < -40 - 32\\\\\rightarrow \frac{9}{5}C < -72

Multiply both the sides by \frac{5}{9}

\rightarrow\frac{9}{5}C \times \frac{5}{9} < -72 \times \frac{5}{9}\\\\\rightarrow C < -8 \times 5\\\\\rightarrow C < -40

Thus the solution of inequality is C < -40

3 0
4 years ago
In a bag, there are 10 blue, 8 yellow
____ [38]

Answer:

10/25

18/25

Step-by-step explanation:

10+8+7 = 25

10/25 for BLUE

18/25 for no RED

7 0
4 years ago
The pressure, P (in lbs/ft2 ), in a pipe varies over time. Five times an hour, the pressure oscillates from a low of 90 to a hig
Lunna [17]

P=160-70*cos(2π*(1/12)*t)

• Pressure in mathematics or physics is defined as force per unit area. The pressure exerted by a solid object which is resting on top of a solid surface is the weight divided by the area of the object . SI unit of force is Newton (N).

First, we find the amplitude by taking the difference between the peak values and dividing by two:

Amplitude=(230+90)/2=70

We can find the center value by either adding 70 to the minimum or subtracting 70 from the maximum:

90+70=160

230-70=160

This tells us that the Center Value=160

The frequency that we are operating at is given as:

f = 5/hour

so in minutes

f=5*(1/60)/minute=5/60=1/12 per minute

So, combining everything we get

P=160-70*cos(2π*(1/12)*t)

Learn more about Pressure here

brainly.com/question/26040104

#SPJ9

7 0
2 years ago
What is true about two hypotenuses
jeyben [28]
A triangle can only have one hypotenuse. The other sides are called legs.
The hypotenuse is the longest side of a triangle.
3 0
3 years ago
One less than a positive number times three more than that number is 32. find the number.
Elenna [48]
n=5

Proof: 

(n-1)(n+3)=32       Now, substitute n with 5
(5-1)(5+3)
(4)(8)
=32

8 0
3 years ago
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