1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
hammer [34]
2 years ago
15

Evaluate d – f if d = 7 and f = –15

Mathematics
2 answers:
KonstantinChe [14]2 years ago
3 0

Answer:

The answer is 22!!!!!!!

Montano1993 [528]2 years ago
3 0

Answer:

22

Step-by-step explanation:

d – f

Let d = 7 and f = -15

7 - -15

7+15

22

You might be interested in
Question 15 of 20
ArbitrLikvidat [17]

72

Very simple Its pretty Blantant Its 72

6 0
2 years ago
The net of a triangular prism is show below.Find the rotal surface area of the triangular prism 4.6,4,5,15
marysya [2.9K]

Answer:

228.4cm²

Step-by-step explanation:

Find the diagram attached

Total surface area of the prism = Ph + 2B

P is the perimeter of the base (triangle)

h is the height of the prism

B is Base area

P = 5cm + 5cm + 4cm

P = 14cm

h = 15cm

B = 1/2 * base * height

B  = 1/2 * 4.6 * 4

B = 4.6 * 2

B = 9.2cm²

Substitute the values into the formula;

Total surface area of the prism = Ph + 2B

Total surface area of the prism = 14(15)+2(9.2)

Total surface area of the prism = 210 + 18.4

Total surface area of the prism = 228.4cm²

Hence the total surface area of the triangular prism is 228.4cm²

7 0
3 years ago
The time t required to drive a certain distance varies inversely with the speed r. If it takes 2 hours to drive the distance at
Ahat [919]
Distance = r x t ===> t=d/r

Distance (after 2 hours driving @30mil/hr) = 2 x 30 = 60 Mil

To drive same distance (60)  with r = 50, the time needed is 60/50 =1.2 hrs
8 0
3 years ago
200 σ j=1 2j( j 3) describe the steps to evaluate the summation. what is the sum?
ziro4ka [17]

The sum of the equation is  = 5494000.

<h3>What does summation mean in math?</h3>

The outcome of adding numbers or quantities mathematically is a summation, often known as a sum. A summation always has an even number of terms in it. There may be just two terms, or there may be 100, 1000, or even a million. Some summations include an infinite number of terms.

<h3>Briefing:</h3>

Distribute 2j to (j+3).

Rewrite the summation as the sum of two individual summations.

Evaluate each summation using properties or formulas from the lesson.

The lower index is 1, so any properties can be used.

The sum is 5,494,000.

<h3>Calculation according to the statement:</h3>

\sum_{j=1}^{200} 2 j(j+3)

simplifying them we get:

\sum_{j=1}^{200} 2 j^{2}+6 j

Split the summation into smaller summations that fit the summation rules.

\sum_{j=1}^{200} 2 j^{2}+6 j=2 \sum_{j=1}^{200} j^{2}+6 \sum_{j=1}^{200} j

\text { Evaluate } 2 \sum_{j=1}^{200} j^{2}

The formula for the summation of a polynomial with degree 2

is:

\sum_{k=1}^{n} k^{2}=\frac{n(n+1)(2 n+1)}{6}

Substitute the values into the formula and make sure to multiply by the front term.

(2)$$\left(\frac{200(200+1)(2 \cdot 200+1)}{6}\right)$$

we get: 5373400

Evaluating same as above : 6 \sum_{j=1}^{200} j

we get: 120600

Add the results of the summations.

5373400 + 120600

= 5494000

The sum of the equation is  = 5494000.

To know more about  summations visit:

brainly.com/question/16679150

#SPJ4

6 0
1 year ago
Which is the graph of y= [X] - 2?
Vera_Pavlovna [14]

Answer:

The third one from left

8 0
3 years ago
Read 2 more answers
Other questions:
  • the formula I=square root w/r gives the electric current I amperes that flows through an appliance, where W is the power in watt
    7·1 answer
  • Somebody please help me!!
    13·1 answer
  • Helppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp
    11·1 answer
  • 4 thousands equal how many hundreds
    15·2 answers
  • What is the value of x? NO LINKS IF YOU DO I AM REPORTING
    8·1 answer
  • INPUT----》Subtract 7 -------》Divide by 3------》OUTPUT<br><br>what is the aut put ​
    11·1 answer
  • Which function is nonlinear?​
    7·1 answer
  • Determine two numbers whose sum is 9 and whose product is 20, by<br> solving a quadratic equation.
    7·2 answers
  • In.
    14·1 answer
  • Why is math important? What does it do for us?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!