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
OLEGan [10]
3 years ago
13

Simplify this expression. 20.25−912+11

Mathematics
2 answers:
DIA [1.3K]3 years ago
7 0

Answer:

-880.75

Step-by-step explanation:

Subtract 912 from 20.25 first then add 11.

Margaret [11]3 years ago
6 0

Answer:

-880.75

Step-by-step explanation:

You might be interested in
Solve for y.<br> 15y - -9y + -10y = 14<br> y =<br> Submit
Tems11 [23]

Answer:

I think y=1

Step-by-step explanation:

15y+9y= 24y

24y-10y=14y

divide 14y by 14 and get just y and divide 14 by 14 to get one

y=1

8 0
3 years ago
How many solutions does an equation of the form x^2- k^2= 0 have?
N76 [4]
1. Use Difference of squares: a^2-b^2=(a+b)(a-b)
(x+k)(x-k)=0

2. Solve for x and k
x=+-k
k=+-x
8 0
3 years ago
A professor finds that the average SAT score among all students attending his college is 1150 ± 150 (μ ± σ). He polls his class
solniwko [45]

Answer:

Step-by-step explanation

Hello!

Be X: SAT scores of students attending college.

The population mean is μ= 1150 and the standard deviation σ= 150

The teacher takes a sample of 25 students of his class, the resulting sample mean is 1200.

If the professor wants to test if the average SAT score is, as reported, 1150, the statistic hypotheses are:

H₀: μ = 1150

H₁: μ ≠ 1150

α: 0.05

Z= \frac{X[bar]-Mu}{\frac{Sigma}{\sqrt{n} } } ~~N(0;1)

Z_{H_0}= \frac{1200-1150}{\frac{150}{\sqrt{25} } } = 1.67

The p-value for this test is  0.0949

Since the p-value is greater than the level of significance, the decision is to reject the null hypothesis. Then using a significance level of 5%, there is enough evidence to reject the null hypothesis, then the average SAT score of the college students is not 1150.

I hope it helps!

7 0
3 years ago
Jones planted s flowers. He planted fewer flowers than Kerry Kerry planted 50 flowers. Write
Vladimir79 [104]

If there is a picture could you please add it to your question?

It will help me find the correct anwser faster for you!

3 0
3 years ago
-3x + 7x-8 = 34 + 9x - 2
zvonat [6]

Answer:

-8

Step-by-step explanation:

First combine like terms:

4x-8=32+9x

-40=5x

-8=x

8 0
2 years ago
Read 2 more answers
Other questions:
  • Krista lives 1/2 mile from school.
    7·2 answers
  • Pensé dos números. Si los sumo obtengo 20. Si al doble del primer número le sumo 35 obtengo el segundo. ¿ qué número pensé?
    10·1 answer
  • Help me out plz I need an answer
    13·2 answers
  • What is it in slope intercept for m?
    5·1 answer
  • Confused PLEZZZZZ HELLLPPPP
    6·2 answers
  • Given the function ƒ(x) = x 2 - 4x - 5
    8·1 answer
  • Please help!!
    15·1 answer
  • (Two-step equations)<br> 3(k-5)= -16<br> What is k?
    5·1 answer
  • Keb wants to put a swimming pool in his backyard. He buys a square tarp to go under it. The circumference of the pool is 48 feet
    15·2 answers
  • 5(-3)<br><br> can you tell me how you got ur answer
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!