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
pantera1 [17]
2 years ago
7

If a = 5 and b = 6, evaluate the following expression: a 3a + b​

Mathematics
2 answers:
babymother [125]2 years ago
7 0

Answer:

3ab

Step-by-step explanation:

tekilochka [14]2 years ago
4 0

Step-by-step explanation:

that would be

3 (5)+6

3 multiplied by 5 is 15

15+6=21

You might be interested in
Sam wants to write an equation to represent a proportional relationship with a constant of proportionality of 6 he write y = 6 +
Olin [163]

Answer:

y = 6x

Step-by-step explanation:

The equation representing a proportional relationship is

y = kx ← k is the constant pf proportionality

Here k = 6 , then

y = 6x ← equation of proportion

7 0
3 years ago
If the squared difference of the zeroes of the quadratic polynomial x2+kx+30 is equal to 169 find the value of k and the zeroes
anyanavicka [17]

ANSWER

x  =  2 \: \: or \:  \:  x  =  15

Or

x  =   - 2 \: \: or \:  \:  x  =   -  15

EXPLANATION

The given polynomial is

f(x) = {x}^{2}  + kx + 30

where a=1,b=k, c=30

Let the zeroes of this polynomial be m and n.

Then the sum of roots is

m + n =  -  \frac{b}{a}  =  -k

and the product of roots is

mn =  \frac{c}{a}  = 30

The square difference of the zeroes is given by the expression.

( {m - n})^{2} =  {(m + n)}^{2} - 4mn

From the question, this difference is 169.

This implies that:

( { - k)}^{2}  - 4(30) = 169

{  k}^{2}  -120= 169

k^{2} = 289

k=  \pm \sqrt{289}

k=  \pm17

We substitute the values of k into the equation and solve for x.

f(x) = {x}^{2}   \pm17x + 30

f(x) = (x  \pm2)(x  \pm 15)

The zeroes are given by;

(x  \pm2)(x  \pm 15) = 0

x  =  \pm2 \: \: or \:  \:  x  =  \pm 15

5 0
3 years ago
I need help pls can someone help pls
Julli [10]

= 23.5

hope it helps

8 0
3 years ago
Read 2 more answers
Which equation has a constant of proportionality equal to 10? Choose 1 answer: Choose 1 answer:
Genrish500 [490]

Answer:

B

Step-by-step explanation:

30/3=10

Have a great day!

3 0
3 years ago
Read 2 more answers
lester jogs 5 3/4 miles each day that he jogs. last month, he jogged a total of 115 miles. how many days did he jog last month?
EastWind [94]
115 divided 23/4 is equivalent to 115 x 4/23= 20
5 0
3 years ago
Other questions:
  • A total of 516 tickets were sold for the school day. There were either adult tickets or student tickets. The number of student t
    6·2 answers
  • Eighty-five percent of Americans favor spending government money to develop alternative sources of fuel for automobiles. For a r
    14·1 answer
  • 6 7 8 9 10 TIME REMAINING 59:50 Two positive integers are 3 units apart on a number line. Their product is 108. Which equation c
    12·2 answers
  • Gabriela drew a net of a rectangular prism on
    8·1 answer
  • A sphere has a radius of 6. Using 3.14 for pi, what is the volume?
    5·2 answers
  • Do you want to buy a pair of skates that originally cost $135. The sales tax is 5.5% and it will be applied to the sale price. W
    14·1 answer
  • the class had a pizza party 3/8 of a pizza was left over and 4/8 of a pizza with other pizza was left over you put them both int
    5·2 answers
  • Given the function below, find f(7) f(x)=-x^2+9x
    5·1 answer
  • Solve each compound inequality. Graph your solutions.<br> 5 + m &gt; 4 or 7m&lt; -35
    11·1 answer
  • Which statement explains how you could use coordinate geometry to prove that quadrilateral ABCD is a square
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!