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
postnew [5]
3 years ago
15

If s(x)=2-x^2 and t(x)=3x, which value is equivalent to (s*t)(-7)?

Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
5 0

Answer:

(s*t)(-7) = 987

Step-by-step explanation:

s(x) = 2 - x²

t(x) = 3x

To find (s*t)(x), multiply s(x) and t(x).

(s*t)(x) = (2 - x²)(3x)

(s*t)(x) = 6x - 3x³

Now that you have (s*t)(x), plug -7 in.

(s*t)(-7) = 6(-7) - 3(-7)³

(s*t)(-7) = 6(-7) - 3(-343)

(s*t)(-7) = -42 + 1029

(s*t)(-7) = 987

You might be interested in
Eric has 3 cakes. He has to divide the cakes equally among his friends so that each one gets 13 of a cake. How many total pieces
lara [203]
Eric has 4 of the total pieces of cake
8 0
2 years ago
Estimate $0.89 ×14 find each product
viva [34]
The product of $0.89 x 14 equals 12.46
5 0
2 years ago
What is the solution of this system of linear equations?<br><br> 3y = x + 6<br><br> y – x = 3
Naya [18.7K]
<span>3y = x + 6
y – x = 3 ----------->  x=y - 3 (substitute in 1st equation)

3y = y - 3 +6
3y - y = 3
2y = 3
y = 2/3

x= y - 3 = 2/3 -3 = 2/3 - 9/3 =  - 7/3

</span>x= - 7/3, y = 2/3<span>


</span>
4 0
3 years ago
Read 2 more answers
The diagram shows a 5 cm x 5 cm x 5 cm cube.
Nitella [24]

Answer:

8.7 cm

Step-by-step explanation:

The question is a 2-two-step Pythagoras theorem. (c^2 = a^2 + b^2)

Consider as such, If I were to draw a diagonal line along the base of the cube what is the length of the diagonal line. To find out that we use the theorem. We can substitute a for 5 and b for 5 as well. So

a^2 +b^2 = c^2

5^2 + 5^2 = c^2

25 + 25 = c^2

√50 = c

Then since the line side of the cube is on a 3d angle we need to do the same process again but now using the imaginary diagonal line that we just calculated and the height (5).

a^2 +b^2 = c^2

√50^2 + 5^2 = c^2

50 + 25 = c^2

√75 = c

c = 8.6602...

<em>when rounded to 1 d.p.</em>

c = 8.7

Line AB is 8.7 cm long.

7 0
3 years ago
What is the answer to this question
vlada-n [284]

Answer:

B

Step-by-step explanation:

If you calculate the side of a square using pythagorean theorem, you would get a side length of sqrt37. Simple multiply this by 4

8 0
3 years ago
Read 2 more answers
Other questions:
  • Grammy's Apple Orchard is selling apple cider in 34.7-ounce bottles for $2.09. Grammy's competitor is selling 24.6-ounce bottles
    11·1 answer
  • A right rectangular prism has a length of 5 in., a width of 3 in., and a height of 2 in. The dimensions of the prism are tripled
    10·2 answers
  • In a group of 20 pupils, 2 play the flute only.
    6·2 answers
  • What is the ratio of students who dance to the total number of students?<br>​
    12·1 answer
  • What is the shape of the base of a pentagonal right prism?
    15·1 answer
  • Use root test to determine the series is convergent/divergent or inconclusive
    7·1 answer
  • there are 96 boys and 120 girls in grade 9. write down the ratio of the number of boys to the number of girls in the class.​
    13·1 answer
  • Annalise withdraws $20.50 each day from her account for a week. how can you represent the change in the account for the week
    14·1 answer
  • 2. 20% of what number is 15​
    14·1 answer
  • 4) In the accompanying diagram, WX || YN . If m
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!