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
skad [1K]
2 years ago
9

13. Solve –5√ x = –15. A. x = –9 B. x = –7 C. x = 9 D. x = 7

Mathematics
1 answer:
ddd [48]2 years ago
4 0

Domain:x\geq0\\\\-5\sqrt{x}=-15\qquad\text{divide both sides by (-5)}\\\\\sqrt{x}=3\to \boxed{x=9}\to\boxed{C.}

You might be interested in
Four balls cost sh. 344. How much did Okech<br> pay for seven balls?
mel-nik [20]

Step-by-step explanation:

4 balls = 344

7 balls = 7×344/4= 602

3 0
3 years ago
Read 2 more answers
A college-entrance exam is designed so that scores are normally distributed with a mean of 500 and a standard deviation of 100.
Crank

Answer: 1.25

Step-by-step explanation:

Given: A college-entrance exam is designed so that scores are normally distributed with a mean(\mu) = 500 and a standard deviation(\sigma) =  100.

A z-score measures how many standard deviations a given measurement deviates from the mean.

Let Y be a random variable that denotes the scores in the exam.

Formula for z-score = \dfrac{Y-\mu}{\sigma}

Z-score = \dfrac{625-500}{100}

⇒ Z-score = \dfrac{125}{100}

⇒Z-score =1.25

Therefore , the required z-score = 1.25

6 0
3 years ago
Volume kubus dengan panjang rusuk 2 cm?​
jolli1 [7]

Answer:

<h2> 8 cm³ </h2>

Step-by-step explanation:

➡️ Volume = r³

➡️ 2³

➡️ 8

8 0
2 years ago
Read 2 more answers
What is the mean of the values in the stem-and-leaf plot?
prisoha [69]

Answer:

You're answer is 42

Step-by-step explanation:

if you add all the numbers together, you would get 336. since there are eight numbers in the data set, you should divide it by eight.. with that said, 336/8 is 42

8 0
2 years ago
PLZ HELP WILL MARK BRAINIEST
Lady_Fox [76]
It will be: D

-3 x -5/2 = 15/2, which is 7 1/2
3 0
2 years ago
Other questions:
  • the line joining A(a, 3) to B(2 -3) is perpendicular to the line joining C(10,1) to B. The value of a is?
    10·1 answer
  • The average weight of a 7-year old girl is 49 pounds. The average weight of an 11 year old girl is 77 pounds.
    5·1 answer
  • Jacqueline had $.84 cents her brother gave her another $.61 cents write the amount of money Jacqueline now has as a decimal expl
    5·1 answer
  • During the woman's basketball championship game, team A scored 2 more points than team B. Together, both teams scored a total of
    9·2 answers
  • A taxi service charges you $1.50 plus $0.60 per minute for a trip to the airport The distance to the airport is 10 miles, and th
    10·1 answer
  • Find the area of the figure below by first finding the areas of the rectangle and triangle.
    12·1 answer
  • What is the sign of−1.69+(−1.69)
    7·1 answer
  • What is the difference of (14m+4) - (7m+1)
    13·2 answers
  • An equation is written<br><br>ac-b=1<br><br>Based on the equation, which is a true statement?​
    5·1 answer
  • Forty more than the product of 2 and a number is twelve. What is the number?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!