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Marrrta [24]
3 years ago
10

Evaluate - 2c + d for c = -9 and d = 4. Please help.​

Mathematics
2 answers:
blondinia [14]3 years ago
7 0

Answer:

-14

Step-by-step explanation:

2c+d

2* -9+4=18+4

-14

Svet_ta [14]3 years ago
3 0

Answer:

-14

Step-by-step explanation:

2c + d

We are given the values of c and d:

c = -9

d = 4

We substitute in these values

2(-9) + 4 = ?

2 times -9 is -18

-18 + 4 = -14

2c + d = -14

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Factories <br>(a+b)^3+8c^3​
Rom4ik [11]

Answer:

(a + b + 2c)(a² + 2ab + b² - 2ac - 2bc + 4c²)

Step-by-step explanation:

Given

(a + b)³ + 8c³ ← this is a sum of cubes and factors in general as

a³ + b³ = (a + b)(a² - ab + b²)

Thus

(a + b)³ + 8c³

= (a + b)³ + (2c)³

= (a + b + 2c)( (a + b)² - 2c(a + b) + (2c)² )

= (a + b + 2c)(a² + 2ab + b² - 2ac - 2bc + 4c²)

8 0
3 years ago
What does AD equal? PICTURE INCLUDED* Triangle congruence and similarity.
mafiozo [28]

Answer:

AD = 7

Step-by-step explanation:

Given that the two triangles are similar by the SSS (side side side) postulate, the triangles share the same ratios when it comes to their sides.

We know the values for lines DB, EB and CB, therefore we can solve for AB, and subtract DB to find AD

We can solve the problem by solving for x:

\frac{x}{32} =\frac{21}{24}

Cross multiply.

24x = 672

Simplify.

x=28

Subtract the value of DB to find AD.

28-21=7

AD=7

8 0
3 years ago
A pizza parlor offers 10 toppings. How many 3-topping pizzas could they put on their menu? Assume double toppings are not allowe
andreev551 [17]

Using combination and permutation we found out that there are 30240 ways to make varieties of pizza with 3 toppings.

Given 10 toppings

10C3 =10!/3! 7! =120

10P5 =10!/5! =30240 ways

A permutation is a process of placing objects or numbers in order. Combining is the ability to select an object or number from a group of objects or collections such that the order of the objects does not matter.

In mathematics, a combination is the selection of elements from a set with different members, so the order of selection does not matter.

The process or state of binding. Some combination: A combination of ideas. Combined: A chord is a combination of notes. Alliance of Individuals or Parties: Combinations to restrict transactions.

Learn more about combination here: brainly.com/question/11732255

#SPJ4

8 0
2 years ago
NEED HELP, DUE SOON! Find the area of the composite figure below and then chose the correct answer.
klemol [59]

Answer:

A) 288.62

Step-by-step explanation:

10.4×15.3= 159.12

10.4²+15.3²= X²

342.25= X²

18.5= X

7×18.5= 129.5

129.5+159.12= 288.62

4 0
2 years ago
In ΔABC shown below, ∠BAC is congruent to ∠BCA: Triangle ABC, where angles A and C are congruent Given: Base ∠BAC and ∠ACB are c
Morgarella [4.7K]
1. Definition of bisector
2. ASA congruence theorem or ASA Postulate
6 0
3 years ago
Read 2 more answers
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