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
VladimirAG [237]
3 years ago
12

X = t - 3, y equals two divided by quantity t plus five

Mathematics
1 answer:
nekit [7.7K]3 years ago
5 0
X = t - 3 is also -t = -x - 3 or t=x+3

Substitute it in

y=2/t+5
y=2/(x+3)+5

Let y=0 to solve for x

0=2/(x+3)+5
-5= 2/(x+3)
-10=x+3
-7=x

Now solve for t

t = x+3
t = (-7)+3
t = -4

Now we can solve for y

y = 2/(-4)+5
y = -0.5+5
y = 4.5

To check

4.5 = 2/(-4) + 5
4.5 = -0.5 + 5
4.5 = 4.5

-7 = -4 - 3
-7 = -7

Therefore
x = -7
y = 4.5
t = -4
You might be interested in
Lena bought 14 yards of wire. How many inches of wire did she buy? ( 1 yard =36 inches)
KengaRu [80]

Answer:

504 inches

Step-by-step explanation:

Multiply 14 by 36 and get your answer

3 0
2 years ago
In the beginning of the study, a randomly selected group of 121 students scored an average of 252 words per minute on the readin
Alborosie

Answer:

Since the sample size is larger than 30, the cognitive psychologist can assume that the sampling distribution of M will be approximately normal.

Step-by-step explanation:

We use the central limit theorem to solve this question.

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a sample size larger than 30 can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}

So

Since the sample size is larger than 30, the cognitive psychologist can assume that the sampling distribution of M will be approximately normal.

5 0
3 years ago
can someone explain to me how to do this?
vladimir2022 [97]

Answer:

10 feet per second most prob

Step-by-step explanation:

4 0
3 years ago
Y=-2x-21 determine the intercepts of the line (,) (,) ASAPPPP
Nesterboy [21]

Answer:

x intercept (10.5,0)

y intercept (0, -21)

Step-by-step explanation:

y=-2x-21

there are two intercept for a line

x intercept, the point of given equation of  line which lies on x axis.

For x intercept corodinate of y is o

Thus, value x intercept is form (x,0)

putting these value in y=-2x-21, we find x intercept

0=-2x-21

2x = 21

x = 21/2 = 10.5

Thus, x intercept (10.5,0)

Y intercept, the point of given equation of  line which lies on y axis.

For Y intercept coordinate of x is o

Thus, value y intercept is form (0,y)

putting these value in y=-2x-21, we find y intercept

y = -2*0 -21

y = -21

Thus, y intercept (0, -21)

5 0
3 years ago
Now that Oakland Auto Reapir has a different owner, its mechanics make $14.20 per hour. That is 25.1% less than they originally
Serhud [2]

Answer:

$18.96

Step-by-step explanation:

Now the mechanics earn $14.2 per hour, which is 25.1% less than before.

If we say that the earnings before were 100% (to facilitate our calculation and understand better), now the earrings are (100-25.1)%=74.9%. This is, now they make the 74.9% of what they used to made.

So:

74.9% = 14.2

Let's multiply both sides by 100%/74.9% to make a 100% appear at the left side (see that multiply and divide by 74.9 will make it desapear):

74.9% *(100%/74.9%) = 14.2 * (100%/74.9%)

100% = 14.2 * (100%/74.9%)

And (100%/74.9%) is equal to 1/0.749, they are the same. So:

100% = 14.2 * 1/0.749

100% = 18.96

So, before the new manager they used to make $18.96. (you can verify by multiplying it by 74.9% and the result is 14.2)

4 0
3 years ago
Other questions:
  • Chapter 7 of the Jiuzhang suanshu presents a problem of two linear equations involving acres of land and their respective prices
    12·2 answers
  • 1.
    8·1 answer
  • Double-Angle and Half-Angle Identiies [See Attachment] Question 4
    15·2 answers
  • If f(x) =5x-6 what is the inverse of f(x)
    13·1 answer
  • A statistics instructor designed an exam so that the grades would be roughly normally distributed with a mean of and a standard
    8·1 answer
  • Find the distance between the points given.<br><br> (3, 4) and (4, 7)
    15·1 answer
  • Find the approximate value of the circumference of a circle with the given radius. Use = 3.14. Round your answer to the nearest
    14·1 answer
  • Mark purchased a new refrigerator that sells for $1300 including tax and delivery. He paid $350 down and the remaining cost in f
    10·1 answer
  • Help me please! ASAP thank you :)
    8·1 answer
  • c. Find the equation of a straight line which passes through the point (4,4) and whose intercept on the x-axis is 5 times its in
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!