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
maks197457 [2]
3 years ago
15

Solve the following quadratic equation using the quadratic formula. −2y^2+5=7y

Mathematics
1 answer:
Vikki [24]3 years ago
3 0

Answer:

y=(7±√89)/-4

Step-by-step explanation:

y=(-b±√b^2 -4ac)/2a

Rewrite given equation in quadratic form so it is -2y-7y+5=0

Then, in formula, sub -2 for a, -7 for b, and 5 for c

y=-(-7)±√(-7)^2 -4(-2)(5)/2(-2)

When you multiply that out you get

7±√49-(-40)/-4

The next step is the answer given above

If you need the answer not in sq rt form, it is y=-4.1085 and y=0.0608

You might be interested in
7t+2r-3t+r what is the answer
Troyanec [42]
This simplifies to 4t+3r
8 0
3 years ago
Read 2 more answers
Find the missing value to the nearest hundredth. sin ___ = 7/12 (1 point) 35.69° 30.26° 80.16° 54.31°
Alisiya [41]
In your calculator, input arcsin(7/12). Make sure that your calculator is in degree mode. The answer is 35.69 degrees.
3 0
3 years ago
What is the best estimate of the area of the figure on the grid if each square has side lengths of 1 inch?
Phoenix [80]

Answer:

C) 29 square inches

Step-by-step explanation:

5 x 5 = 25

Triangles = 0.5

25 + 2 = 27

27 + (4 x 0.5)

27 + 2 =29

~~Thanks,

             Sanjith U.

6 0
3 years ago
Read 2 more answers
I need help on this question plz answer me
ahrayia [7]

A stem and leaf plot (histogram) shows the mode as the longest list of "leaves." It is the easiest to use for finding mode.

A box-and-whisker plot tells you nothing about relative frequencies.

A scatter plot or line graph would require careful re-interpretation to determine the mode. If the amount of data is large and there are many data values with about the same high frequency, these charts may be unhelpful, too.

8 0
3 years ago
Plz help, I don't get it
amm1812


Step-by-step explanation:

(a+b)^{2} =a^{2} +2ab+b^{2}

e.g.

(x+9)^{2} =x^2+2(x)(9)+81

(x+9)^{2} =x^2+18x+81                            


8 0
3 years ago
Other questions:
  • The total length of 3 boards was 21.35 m. If one board was 8.2 m long and another was 6.42 m long, how long was the third board?
    6·2 answers
  • How does a "for every" statement show a ratio comparison? (Example of a for every statement: There a 5 strawberries for every 6
    10·2 answers
  • F(x)=4 find x if(x) = x+3
    7·1 answer
  • What percent of 126 is 22?
    15·2 answers
  • 7x+9-13x+4 simplified
    8·1 answer
  • Please help me<br> -tan^2 x+sec^2 x=1
    10·1 answer
  • What is the slope of line 3x - y = 18
    14·1 answer
  • Sascha deposited $600 in a simple interest saving account. In one year the value of the account increased to $621
    14·1 answer
  • Reasoning There are 55 vehicles in a parking lot. The frequency table
    9·1 answer
  • Jayce made a scale drawing of the elementary school. He used the scale 7 centimeters = 1 meter. What is the drawing's scale fact
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!