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
Sladkaya [172]
3 years ago
5

Evaluate the following if a = 3,b= -2 and c = 1 a3 - 2bc +5ac

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

Answer:

28

Step-by-step explanation:

(3)×3 - 2×(-2)×(1) + 5×(3)×(1)

9 - -4 + 15 = 28

valentinak56 [21]3 years ago
4 0

Answer:

46

Step-by-step explanation:

Given

a³ - 2bc + 5ac ← substitute values for a, b, c into the expression

= 3³ - (2 × - 2 × 1) + (5 × 3 × 1)

= 27 - (- 4) + 15

= 27 + 4 + 15

= 46

You might be interested in
6. Write and solve a system of THREE Inequalities that models the situation below.
yuradex [85]

Answer: uh.. 3?

Step-by-step explanation:

lol

7 0
2 years ago
Which of the following statements are not true?
lubasha [3.4K]
That one correct so yes um cause the app said answer must be above 20 characters

6 0
3 years ago
If necessary, combine like terms. (x-10)(x-10)
NeTakaya

Answer:

x^2 − 20x + 100

Step-by-step explanation:

7 0
3 years ago
What is the surface area of the rectangular pyramid
posledela

Answer:

<h2>41.74 m²</h2>

Step-by-step explanation:

We have:

rectangle 4.8 m × 3.8 m

two triangles with base b = 4.8 m and height h = 2.6 m

two triangle with base b = 3.8 m and height h = 2.9 m.

The formula of an area of a rectangle l × w:

A = lw

Substitute:

A_1 = (4.8)(3.8) = 18.24\ m^2

The formula of an area of a triangle:

A=\dfrac{bh}{2}

Substitute:

A_2=\dfrac{(4.8)(2.6)}{2}=6.24\ m^2\\\\A_3=\dfrac{(3.8)(2.9)}{2}=5.51\ m^2

The Surface Area:

S.A.=A_1+2A_2+2A_3\\\\S.A.=18.24+2(6.24)+2(5.51)=41.74\ m^2

3 0
4 years ago
Solve for the value of a. .<br> (9a+6°<br> 750
Lilit [14]
As you can see those two angles are supplementary which the sum of two angles = 180°

So,

(9a + 6) + 75 = 180

Subtract 75 on both sides:

9a + 6 = 105

Subtract 6 on those sides:

9a = 99

Divide 9 on both sides:

a = 11


-
8 0
3 years ago
Other questions:
  • Victoria spins the spinner 18 times, and it stops at the letter 'B' 10 times. If she spins the spinner a 20th time, what is the
    5·1 answer
  • An electronics store makes a profit of $69 for every standard DVD player sold and $85 for every portable DVD player sold. The ma
    6·1 answer
  • Two sides of a triangle have lengths 9 and 14 which inequalities describe the value that possible lengths for the third dide
    8·1 answer
  • Which is the same as 0.08?<br><br> A) 80%<br> B) 80/100<br> C) 8%<br> D) 0.8
    5·2 answers
  • I need help I will give you 15 points
    10·2 answers
  • There are 9 flash cards with numbers from 20 to 28 written on them. Laura drew the card with 22 on it. She is about to draw anot
    8·1 answer
  • 850<br> 1 2 3<br> 842 834 829<br> Q Zoom<br> 4 5<br> 820 817<br> y<br> A population of 850 birds decreases by roughly the same p
    11·1 answer
  • Given that
    12·2 answers
  • But all this-the mysterious, far-reaching hair-line trail, the absence of sun from the sky, the tremendous cold, and the strange
    13·2 answers
  • An active boy between the ages of 9 and 13 should eat about
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!