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
Scorpion4ik [409]
2 years ago
9

BRAINLIEST ASAP!!!

Mathematics
1 answer:
Anarel [89]2 years ago
5 0
Part A: the radicand is the same as the discriminant, therefore is b2 - 4ac
In 9x^2 - 16x + 60 = 0, a = 9, b = -16, c = 60
so b2 - 4ac =
{b}^{2}  - 4ac =  {( - 16)}^{2}  - 4(9)(60) \\  = 256 - 2160 = 1904 \\  \sqrt{1904}  =  + 43.63 \: and \:  - 43.63

Part B: Solve 4x^2 + 8x - 5 = 0
What would make 8? (5×2)-2 = 8, so:
(2x+5)(2x-1) = 0
2x+5 = 0
2x = -5
x = -5/2
2x-1 = 0
2x = 1
x = +1/2
So the solutions are: -5/2, +1/2
You might be interested in
HHHHHHEEEEEELLLLLLLPPPPPP
valentina_108 [34]
Ibwill help just by this
4 0
2 years ago
Use properties to prove that the expressions are equivalent. Complete the statements. Prove 7x - 4x = 3x. Use the distributive p
Rasek [7]

Answer:

First one is x(7-4)

Second one is x(3)

Third one is 3x

Step-by-step explanation: Plz mark brainliest

3 0
3 years ago
Points for free cause I'm feeling good today
Oksana_A [137]

Answer:

thanks

Step-by-step explanation:

h1tj26jw6uw6hw6jwyjwy qjg3jwjbwb

4 0
2 years ago
Read 2 more answers
Kayson mixes 300 milliliterss of spinach, 200 mL of berries, and 42 mL of dressing to make a salad. There are sss milligrams of
melomori [17]

Let T be total number of milligrams of vitamin C in our salad.

We have been given that there are s milligrams of vitamin C per milliliter of spinach, B mg per milliliter of berries, and D mg per milliliter of dressing.

Let us find how much mg of vitamin C our each ingredient of salad will have.

We have been given that a salad contains 300 milliliters of spinach, 200 ml of berries, and 42 ml of dressing.  

\text{Mg vitamin C in 300 ml spinach}=300\cdot\text{s mg}

\text{Mg vitamin C in 200 ml berries}=200\cdot\text{B mg}

\text{Mg vitamin C in 42 ml dressing}=42\cdot\text{D mg}

To find total milligrams of vitamin C in our salad we will add milligrams of vitamin C in each of three ingredients of salad.

T=(300s+200B+42D)\text{ mg}

Therefore, our desired expression will be T=(300s+200B+42D)\text{ mg}.

5 0
3 years ago
Read 2 more answers
Maddie and her family paid $43for 5 Italian Cheeseburgers how much does each chees burger cost
Georgia [21]
8.60 $ because the total was 43 and the family bought 5 of them so 43/5 equals 8.60
5 0
2 years ago
Other questions:
  • 2x+y=5<br> -x+2y=4 <br><br> How do you solve this
    12·1 answer
  • −3(2+4k)+7(2k−1) eqivalent expression
    6·1 answer
  • Select the decimal that is equivalent to 13/75
    6·2 answers
  • What is the product of 2p + q and –3q – 6p + 1?
    12·2 answers
  • List all the possible results that are divisible by 3.​
    7·1 answer
  • Which theorem shows WQD = XRD
    10·1 answer
  • QUESTION 8
    12·1 answer
  • Expand the following. In other words, remove the parentheses (brackets):
    11·1 answer
  • 4 Dean has a rectangular picture that is 6 inches long and
    10·2 answers
  • A basketball player has a 50% chance of making each free throw. What is the probability that the player makes exactly two out of
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!