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
polet [3.4K]
2 years ago
10

Help!! will give brainl.ly <3

Mathematics
1 answer:
Lelu [443]2 years ago
7 0

Answer:

7.5

Step-by-step explanation:

Since the triangles are congruent, corresponding sides will have the same lengths. So since line AC is 7.5, line HT must also be 7.5

You might be interested in
What’s the slope of a line that’s perpendicular to y = 2 x + 7
Zina [86]

Answer:The slopw is -1/2

Step-by-step explanation

A slope that is a opposite reciprocal of another slope is always perpendicular. Make sure it is a opposite reciprocal. Not just a regular reciprocal.

8 0
3 years ago
Topic: The Quadratic Formula
Finger [1]

Answer:

Step-by-step explanation:

The quadratic formula for a equation of form

ax²+bx + c = 0 is

x= \frac{-b +- \sqrt{b^2-4ac} }{2a}

For the first equation,

x²+3x-4=0,

we can match that up with the form

ax²+bx + c = 0

to get that

ax² =  x²

divide both sides by x²

a=1

3x = bx

divide both sides by x

3 = b

-4 = c

. We can match this up because no constant multiplied by x could equal x² and no constant multiplied by another constant could equal x, so corresponding terms must match up.

Plugging our values into the equation, we get

x= \frac{-3 +- \sqrt{3^2-4(1)(-4)} }{2(1)} \\= \frac{-3+-\sqrt{25} }{2} \\ = \frac{-3+-5}{2} \\= -8/2 or 2/2\\=  -4 or 1

as our possible solutions

Plugging our values back into the equation, x²+3x-4=0, we see that both f(-4) and f(1) are equal to 0. Therefore, this has 2 real solutions.

Next, we have

x²+3x+4=0

Matching coefficients up, we can see that a = 1, b=3, and c=4. The quadratic equation is thus

x= \frac{-3 +- \sqrt{3^2-4(1)(4)} }{2(1)}\\= \frac{-3 +- \sqrt{9-16} }{2}\\= \frac{-3 +- \sqrt{-7} }{2}\\

Because √-7 is not a real number, this has no real solutions. However,

(-3 + √-7)/2 and (-3 - √-7)/2 are both possible complex solutions, so this has two complex solutions

Finally, for

4x² + 1= 4x,

we can start by subtracting 4x from both sides to maintain the desired form, resulting in

4x²-4x+1=0

Then, a=4, b=-4, and c=1, making our equation

x=\frac{-(-4) +- \sqrt{(-4)^2-4(4)(1)} }{2(4)} \\= \frac{4+-\sqrt{16-16} }{8} \\= \frac{4+-0}{8} \\= 1/2

Plugging 1/2 into 4x²+1=4x, this works as the only solution. This equation has one real solution

7 0
2 years ago
Which one should i pick?
Airida [17]

last one is the solution u should choose

7 0
3 years ago
Read 2 more answers
Which of the following equations is equivalent to y-3x=4 ?
lina2011 [118]

Answer:

y=3x+4

idk what it has to be equivalent to...I just put it in y-intercept form

Step-by-step explanation:

7 0
3 years ago
Which of the following numbers would have 10^3 in its scientific notation?
Monica [59]

Answer:

D. 9,700

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • Convert 13/25 to a decimal
    9·1 answer
  • If a number is increased by its square, the result is 72 find the number
    5·1 answer
  • Help me plz good points
    10·1 answer
  • 8. Community Hospital, aa 120 bed facility reported that in March there were 545 discharges. Using the direct formula, what was
    14·1 answer
  • Mara's family is driving to her grandmothers' house. The family travels 239.4 miles between the hours of 9:10 a.M. To 1:40 p.M.
    10·2 answers
  • A caterer needs to buy 21 pounds of pasta to cater a wedding. At a local store, 8 pounds of pasta cost $12. How much will the ca
    8·1 answer
  • PQR is an isosceles triangle in which PQ = PR. M and N
    10·1 answer
  • Solve the equation: 315= 390- 25q ​
    10·2 answers
  • The weight of meteorite A is 5 times the weight of meteorite B. If the sum of their weights is 126 tons, find the weight of each
    12·1 answer
  • Does someone mind helping me with this problem? Thank you!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!