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
Ilya [14]
4 years ago
14

What is the answer to 2x^2 - 3x - 15 = 5

Mathematics
1 answer:
Alja [10]4 years ago
6 0
2x²-3x-15=5
2x²-3x-15-5=0
2x²-3x-20=0
½(2x+5)(2x-8)

-2x=-5
x=-5/2


2x-8=0
2x=8
x=4




---------------------------


You might be interested in
An angle measured 10 degrees less than the measure of its complementary angle. Find the measure of both angles
Mazyrski [523]

Answer:

The measure of the angles are 40 degrees and 50 degrees

Step-by-step explanation:

Let

x ----> the measure of one angle in degrees

y ----> the measure of the complementary angle in degrees

we know that

If two angles are complementary, then their sum is equal to 90 degrees

so

x+y=90 ----> equation A

we have that

x=y-10 ----> equation B

Substitute equation B in equation A and solve for y

(y-10)+y=90\\2y-10=90\\2y=100\\y=50

Find the value of x

x=50-10=40

therefore

The measure of the angles are 40 degrees and 50 degrees

3 0
3 years ago
X-intercept =2; y-intercept =4/3 Find he equation of the line​
Neko [114]
Y = mx + b
plug in the numbers.
y = 4/3 + 2
7 0
3 years ago
Solve for A if ñ=3.14 and r=3.
julsineya [31]

Answer:

28.26

Step-by-step explanation:

The question gives the first three digits of π, which is 3.14, and it gives us the radius, which is 3. So, just substitute them into the formula and you’ll get 3.14(3^2). Solve it and the final answer is 28.26.

Hope this helps! :)

6 0
3 years ago
Lucy has one and one fourth cup of sugar in a cookie recipe calls for 2/3 cup of sugar how many cups of sugar will she have left
cluponka [151]

Answer:

\frac{7}{12}

Step-by-step explanation:

1 \frac{1}{4}  -  \frac{2}{3}  = \frac{5}{4}  -  \frac{2}{3}  =  \frac{15 - 8}{12} =  \frac{7}{12}

5 0
3 years ago
WILL GIVE BRAINLIST please help I beg ​
Rainbow [258]

Answer:

96°

Step-by-step explanation:

An angle formed by a chord and a tangent that intersect on a circle is half the measure of the intercepted arc.

x = 168/2 = 84°

A straight angle is 180 degrees

y = 180 - x = 180 - 84 = 96°

3 0
4 years ago
Other questions:
  • Help me out please need them by tomorrow, answer any question you know just put the number so I can know what question you answe
    13·2 answers
  • I AM GIVING 10 POINTS TO WHOMEVER ANSWERS THIS!!!
    10·1 answer
  • Which equation represents a line which is parallel to the line y=4x-8y=4x−8?
    11·1 answer
  • The number of years a radio functions is exponentially distributed with parameter λ = 1 8 . If Jones buys a used radio, what is
    15·1 answer
  • Find the slope and the y-intercept of the equation y − 3(x − 1) = 0.
    9·1 answer
  • If G(x)=5x-2, find G^-1(x). <br> A.-5x+2<br> B.(x+2)/5<br> C.(x/5)+2
    13·1 answer
  • Point (a, b) is translated 4 units down.
    15·1 answer
  • How much is 2000mg in grams?
    11·2 answers
  • Can somone answer this
    9·2 answers
  • In 2016, a maglev train in Japan traveled 1.1 miles in 1045 seconds.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!